[Vegetable seeds Type] How to classify vegetable seeds for vegetable seeds

Vegetable seed classification

Conventional seed

The conventional vegetable species (OP) is the seeds that the vegetables grow through natural laws.At present, there are many problems with conventional breeding of vegetables.

First, there are many varieties.Under the nickname of science and technology is the first productive forces and science and technology policies, scientific research institutions, experts and scholars engaged in agricultural breeding work have sprung up, and new achievements and new varieties have continued to emerge.The problem that follows is that one is that there are many varieties, the characteristics of the characteristics are small, and the difficulty of miscellaneousness during breeding has increased, and the authenticity and purity of the variety are difficult to guarantee.There will be Mr. Nan Guo's fishmarks, which will push some varieties and systems that have poor characteristics, poor adaptability, or no production value at all, and mislead and interfere with normal seed production and operation order.Therefore, the purchase of vegetable seeds should be based on a good reputation.Buy regular seeds.

Second, the seeds are similar to non -seed, and they are hidden in production.The first is similar appearance.The difference between conventional seeds and seeds itself is not very different.Therefore, it is difficult to identify in the choice.This causes the consequences of lack of understanding of seeds and damage production.Especially the base vegetable species are particularly unsatisfactory.As a result, the following introduces the identification and purchase method of conventional vegetable seeds.

Hybrid seed

Vegetable hybrid seeds (F1 general hybridization is a generation of hybridization) is to pollinate it by using different characteristics of plants (parent, mother -in -law) to change the variety characteristics.

There are parents in the field of hybridization, and the appearance performance of sub -grain forms is also very different from normal grain cotton oil (such as hybrid rice seeds, more exposure of stigma, not full of hybrid rapeseed seeds, etc., as well as hybrid fruit corn seedsLight quality and dry.

Vegetable hybridization has two inherited differences in the inheritance. At the same time, their excellent traits and complementary vegetable varieties are used for hybridization. The first generation of hybrids with hybrid advantages are used for production. This is a hybrid vegetable seed.The advantages of hybrid vegetable seeds are a common phenomenon of the biological world. Using the advantages of hybrids to improve crop yield and quality is one of the main achievements of modern agricultural science.

However, due to the rapid development of vegetable hybrid varieties after the scientific call, the types of vegetable hybridization are not lower than conventional varieties.Under normal circumstances, hybrid vegetable seeds have disease resistance and can quickly adapt to the local climate environment.This is also one of the purpose of vegetable seed hybridization.But the ultimate goal is that we hope that hybridization can bring greater economic benefits.

At present, the hybridization of vegetable seeds is becoming more and more common, and it has studied and breeding tens of millions of varieties.While buying vegetables seeds, we must also pay attention to the adaptability of such varieties to the local climate and the consumption ability of the local market.You can't buy it blindly.At present, there are many kinds of hybrid vegetables on the market, and many of them belong to fake hybrid vegetable seeds.And one time is used to disturb the market.So try to buy regular companies when buying, and it can be easily ordered through mobile phones and computer online, and directly shipped the country.In addition, you can also buy it directly at the agricultural Sciences at all Levels.It is also convenient to buy online.

Because the hybrid vegetable seeds have a genetic factors that have miscellaneous, they cannot be used in the next year after the vegetables are harvested.However, the hybrid vegetable seeds are more advantageous in terms of yield and disease resistance than ordinary conventional seeds.Therefore, most of the professional vegetable growers are using hybrid vegetable seeds.

Vegetable seed identification purchase

Onion seeds, leek seeds: The new seeds of the year must be greatly reduced.The method of identifying the old and new seeds is: the surface of the new seeds has wrinkles, the dark side is clear, and the luster is shiny. There is a clear little white point on the umbilical umbilicus.seeds that store for more than 1 year, the surface is lost, a layer of white frost appears, and the umbilical umbilicus has changed from white to yellow. Such seed germination rates, low growth potential, should not be used.

Tomato seed: Generally, it can be saved for 3 to 4 years, and it does not exceed 4 years, otherwise the germination rate will be reduced.The method of identifying the old and new seeds is: there are many small hair on the new seeds, and the tomato flavor. The old seeds have less hairs or fall off, and the smell becomes lighter.

Chili seed: It cannot be more than 3 years.New seeds are spicy, and the seeds are golden brown.The germination rate of new seeds is about 90%, the bud rate of 2 years is about 80%, and the bud rate of 3 years will be reduced to less than 50%.

Celery seeds: It can be stored for 5 years, and the new seeds that year are unavailable. It must be used for 1 year.

Coriander: It must be stored for 1 year, but it should not exceed 3 years.New coriander seeds are strong, and old seeds are fade.

Eggplant seed: The storage time can be slightly longer, and the seeds can be used within 5 years.The outer Skin of the new seeds is bright, milky, and the surface of the seeds is dark red and no light.

Cabbage, radish, cabbage seeds: The general storage life is 3 to 4 years, and the germination rate of more than 4 years has decreased significantly.The surface of the new seeds is Smooth, the surface of the seeds is dark, and after the seeds are crushed with nails, the new seeds will not be broken, the seeds are fragile, and the seeds are easy to fall off.

Cucumber seed:It can generally save 3 to 4 years.The surface of fresh Cucumber seeds is white or milky white, Smooth surface, and the burrs at the tip of the seeds are pointed. Matsters appear on the surface of the seeds, losing their luster, and the burrs at the tip of the seeds become blunt.

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[Material of raincoat] What kind of material is the most durable raincoat for buying raincoat?

What is good for buying raincoat?

Oxford cloth

The product fabric obtained by Mianlun or polyester has been obtained by a specific weaving method. It has easy washing and dry, soft feel, good moisture absorption, soft fabric color, soft cloth body, good breathability, comfortable wearing, and double -color effects.

Mianlun (nylon))

The lightness of silk is good, strong and abrasion resistant, but it is easy to deform under external force, so its fabric is prone to wrinkles during wear.

Polyester

The biggest advantage of polyester raincoat fabric is that the anti -wrinkle and preservation are very good, but the chromosome is poor and the hygroscopic breathability is poor.

waterproof and humid cloth

It is a layer of waterproof and humid coatings in the inner side of the fabric, such as Raincoats commonly used by police and climbers, with waterproof and breathable effects, but the price is high.

In short, Oxford cloth is more suitable for waterproof clothing materials, which is determined by its weaving law.

What material raincoat is the most durableRainwear purchase

1Look at the size: Most of the raincoat packaging will have a comparison table that chooses the size of the raincoat, but the size of the Raincoats made by the raincoat manufacturers on the market is different. ThereforeGo to buy Raincoats of different brands, it is easy to have errors

2Try to penetrate: It is best to try it on Raincoats, but usually the Raincoats in the mall cannot be tried. It is recommended to wear it.mPersonnel to buyLThe raincoat, and so on, it will be better, even if you wear more clothes in winter.

3View materials: The material of Raincoats is roughly divided into three categories, with different materials and different prices.Consumers can buy according to the actual situation: Polyethyl chloride (PVC) Material: The jelly semi -transparent plastic raincoat is often seen outside. This raincoat is low in price, but it is easy to damage.

Material with nylon and polyvinyl chloride: another layer of nylon cloth materialPVCThe waterproof layer, its price is moderate and it is not easy to damage. It is the main material of the raincoat now.

Material with waterproof and humid cloth: Apply a layer of waterproof and humid coatings in the inner side of the fabric, such as Raincoats commonly used by police and climbers. Its waterproof and humid layer is10For 100 million micropores, these micro -holes can make gas molecules pass, but they cannot allow large water molecules to pass. Therefore, the waterproof and breathable effect can be achieved. The disadvantage of waterproof and humidity is that the price is more expensive.

[Swiss Army knife Backpack] Swiss Army knife Backpack Really, how to identify you to identify the century -old Swiss military sword bag

Centennial Swiss Army Bags originated from Weigo, a well -known Swiss military knife brand.In 1893, Switzerland was born in the world's first Wenger combination.For a century, Switzerland Wenger has been known as the "only high -quality knife product manufactured with watch technology" in the world's knife industry with its superb mechanical manufacturing technology and professional handicraft technology.Swiss Wenger's luggage products have inherited the brand's century -old cultural connotation, solid quality, and multifunctional design, and quickly became the first choice for consumers in the world. Its classic cross -shaped LOGO is even more famous in the world.

However, many domestic consumers still face the "Cross" cognitive trap when they purchase the "Centennial Swiss Army Bags".Many domestic consumers buy the "Centennial Swiss Army knife Bag", which are usually distinguished by the Cross LOGO.However, not all the "cross" are real "century -old Swiss military sword Bags".At present, there are many packages marked with the Cross LOGO, but some of these brands are similar to the "Centennial Swiss Army knife Bag" logo, and some are the name of the real "Centennial Swiss Army knife Bag" brand Wenger (Weigo) name.Similarly, most of these brands are domestic corporate brands, not the real "century -old Swiss military sword bag".

How can I buy a real "Centennial Swiss Army knife"?

Although various cognitive traps make it difficult to distinguish the century -old Swiss military knife brand Wenger's bottle, as long as you pay more attention when buying, you can still find the problems.It is understood that UTC experts are the only exclusive agent of Weigo Bags in China. The relevant person in charge of UTC experts conducts tricks on how to distinguish the century -old Swiss military sword Backpack.Bid, tag content, etc. are distinguished.

1. LOGO recognition method:

The real "century -old Swiss military knife bag", its cross logo is authorized by the Swiss government. The logo frame is arc -shaped, rounded, and the color is red. It looks scattered.

Centennial logo of a century -old Swiss Army knife brand

Centennial Swiss Army knife brand Weigo Wenger's logo

Second, weaving :

The real century -old Swiss Army knife brand Wenger's luggage is weaved in the luggage. The opposite of the weaving standard reflects the information of the Chinese agent UTC experts, as shown in the figure below.

Third, tag content recognition method:

The real century -old Swiss Army knife brand Wenger Bag, different years and styles of products are used for different listings, and pseudo -products will not pay special attention to the change of details.Each tag has information about UTC experts. As long as consumers pay more attention, consumers will distinguish them.

In addition, as a world -renowned brand, Wenger's work and materials are extremely sophisticated, which is obviously different from other confusing luggage products and brands.The purchase of Wenger's Bags is based on the awareness and trust of the "Centennial Swiss Army knife" brand.On the occasion of another 315, consumers should improve their ability to distinguish, and find the real century -old Swiss military sword brand Wenger from various "cross" luggage.

1. What are the types of sacred Sunglasses

1. Yashi series

The wisdom of the pen, the taste of the tie clip, the passion of the sports car, the speed of lightning, the unruly cowboy, the classic and stylish design elements, creating a delicate and elegant Sunglasses for modern high -quality men.Create a variety of exquisite and elegant Sunglasses for modern high -quality men.The resolute lines, the calm tone, and the low -key passion in the low -key.Simple but not simple design shows the unique philosophy of modern high -quality life.

2. Celebration series

Lily blooms quietly, dancing lightly like butterflies, and loves the fluttering and elegance of this season.The last moment in the city is colorful.Youth is shining like pearls, and it is not just you who are lost.

3. Coloring series

Intelligent changing the color of the lens, the transparent design of the geometric lines and the comfortable visual experience, let you enjoy this summer.The gentle sunshine, the cool breeze, the jumping waves, and the soul seemed to sing with.

4. NXP series

Breaking through the concept of the limit of technology, the top aerospace top carbon fiber material, exclusive patented style technology to escort the outbound pedestrians.Tough design style, superb manufacturing craftsmanship, perfect visual effects, and achieve the peak state of technology.

5. Dynamic series

When the tough building line encounters polarizing lenses, when the sense of muscle strength is perfectly combined with the cold metal, it is not only explosive, but also shocking.Give yourself a different way of lifestyle, and evoke the stupid sports cells in the body. This summer, we must get rid of the shadow and chase the sun.

6. Children's mirror Series

Attentive research, excellence, only for better protection, use imported non -toxic and elastic materials, high -tech non -toxic paint technology.The design uses a playful and cute animal image, the dexterous and cool shape, such as a pure and bright smile to bloom silently, restore the child's fun summer.

7. Youth Series

Wearing the most personality glasses, taking the most attitude road, Tairai bombardment is my appearance, not dead is my spirit.Deeping deep is my style, never low -key, youth is to show publicity.

2. How to choose to keep the Sunglasses of the Sunglasses

High -quality Sunglasses can effectively protect the eyes, allowing people to avoid all kinds of miscellaneous invasion.However, low -quality polarized Sunglasses not only do not have the effect of eye protection, but may even cause damage to the eyes.So, do you know how to buy polarized Sunglasses?

1. Look at the price:The price of good lens quality should not be too cheap. Everyone must go to a regular glasses shop to buy a guaranteed polarized Sunglasses with guaranteed quality.

2. Look at the lens:Take the polarized Sunglasses to the Lights to see if there are bubbles and defects on the surface of the lens.

3. Look at the feeling:The visual comfort of the lens and the comfort of the frame wearing are very important. You cannot wear dizziness and bloating.

4. Look at color:Everyone is best to choose the color of the lens color of gray, green, and blue, such as polarizing Sunglasses with sunshade effects, because these relatively soft colors will not change color when viewing the scenes, which is especially suitable for the driver.

5. Look at the UV index:For Sunglasses, the UV index is also an important standard for filtering from ultraviolet rays.

6. Try to wear:When you buy polarized Sunglasses, you must remember to try it. It is best to try it under natural light.Bao Sheng Sunglasses product Daquan & gt; & gt;

Attended clothing purchase strategy

1. Reality?Fake goods?

The "real goods" mentioned refer to products sold through channels such as specialty stores, agents or retailers recognized by manufacturers, and can enjoy the after -sales service provided by the manufacturer.The products purchased through other informal channels are called "fakes" in this article.

The quality and services of international professional brands are guaranteed, that is, the price is too high for most people.The only way to buy such products is a specialty store of various brands.If you plan to invest more than 30,000 on Outdoor equipment, or those who are preparing to climb the snow mountain are suitable for buying such products.High -quality and high -priced non -professional non -international brands.The production lines and raw materials used in such brands are guaranteed; but due to huge promotion and sales costs, the pricing is very high, so it is called high -quality and high -priced.Non -professional refers to the special design of such products for the Outdoor environment.Non -international brands mean that such brands are not accepted by the European and American markets with the most developed outdoor sports. They can only be eaten in the domestic outdoor sports market in the initial stage.In addition, the low -end products of such brands are basically low -quality and high -priced, and there is no choice value.Growing domestic professional brands.The brand established by the enthusiasts of outdoor sports considers the needs of domestic Outdoor markets in positioning, and it is continuously improving products according to user feedback.However, due to the constraints of factors such as cost control and design experience, it is not as good as the above two types of products in terms of production technology, materials, and comprehensive performance.

Two or two -level materials?Three layers of fabrics?

The fabrics of the jacket are generally divided into the outermost protective layer, the waterproof breathable layer and the linked in the middle.

The protective layer and the waterproof and breathable layer are pressed together. The linked is separated from them. Generally, it is nylon, mesh cloth, or a certain kind of sweat absorption material, mostly black.The rubber bar at the stitching is blocked by the library and invisible (unless it is through the grid cloth).Three layers of fabrics: The protective layer, waterproof breathability and linter are pressed together. It looks like one layer of fabric. Generally, the color of the linoleum is mostly silver -gray.You can see the gel strip at the stitching of the library.Generally speaking, the breathability and warmth of the two -layer material are better than the three layers, but the three -layer material is light weight, comfortable to wear, and small folding volume.It's better.

Three, mountain jacket?Outdoor jacket?Rain jacket?

These are different types of assault clothes, which can be understood as mountaineering, Outdoor models, and rainfall.

Mountaineering: The style is relatively simple, considering some special requirements when climbing.For example, the hat of the couple is better; there is no pocket below the waist -it is convenient to wear a seat Belt.Under the premise of ensuring strength, minimize weight.If it is more enthusiastically played outdoors, it is recommended to choose this.

Outdoor models: Suitable for various types of activities, complex styles, many functions, heavier than climbing models.

Rain -proof models: The simplest style, the lightest weight, the thinnest fabric, the cheapest price, and the worst breathability!If you do nt have a fever outdoors and do nt want to invest too much, it is recommended to choose this.It is best to put it in the Backpack, in case it rains and then put it on.

Four, waterproof?Breath?

Generally, if waterproof is waterproof, it is often not breathable, such as plastic, rubber, etc.; Materials with good air permeability, such as cotton products, cannot do waterproof.The materials for making charge clothes also take into account waterproof and breathable performance, but the cost of taking into account is limited waterproof and breathable performance. Do not have too high expectations.Generally, when climbing continuously, it will feel boring, and in the continuous heavy rain, it will always be wet.

waterproof: The fabric of the jacket is waterproof as much as possible on the basis of ensuring a certain breathability, but the waterproofness is far less than that of plastic, rubber and other materials.

Breathe: Use the steam method to test, pour hot water in the cup, and blind the soles of the jacket on the mouth of the cup. You can also press another glass on the fabric.Qi, that means that the fabric is breathable.However, it should be noted that the breathability of different materials is different. There are high and bottom. The above test can only be qualitatively proved that the material is not completely impermeable, but the breathable performance is still unknown.