[Wheat seeds] How is the best temperature for wheat seeds to grow wheat seeds to germinate
[Wheat seeds] How is the best temperature for Wheat seeds to grow Wheat seeds to germinate
1. Choose good breeds
The selection of good varieties with excellent quality, high single -plant productivity, strong resistance, high economic factor, and unrealized, which is conducive to achieving output targets of more than thousands of pounds.
2. Fine and neatly, balance fertilization
2.1 finely neatly
In order to improve the soil structure and enhance the ability of soil water storage to keep it, fine cultivation before sowing, plowing 23 ~ 25 cm, and returning orange stalks to return to the field.20~25cm15~20 cmPanasonic real, water storage and saving.
2.2 Do a ditch
building fields, establishing facilities for Wheat field irrigation and drainage phase, digging "Sanlou" ( , waist ditch, ground groove), and dredge the "three ditch" in time after spring to make the ditch be connected to meet the irrigation and drainage drainage.Require.
2.3 Balanced fertilization
According to the condition of soil comprehensive Fertilizer, the fertilization plan is formulated. It is mainly Organic fertilizer, and Organic fertilizer and inorganic Fertilizer are used to improve the organic matter content in the soil, thereby achieving the purpose of balanced fertilization.At the same time of cultivated land, you must apply sufficient base Fertilizer, 30 ~ 45 t/hectares of Organic fertilizer, pure N 225.0kg/hectare, P2O5 90.0 ~ 112.5 kg/hectare, K20 75.0 ~ 112.5 kg/hectare.Losses loss, avoid premature premature aging in the middle and late stages of Wheat, and move about 50%of nitrogen fertilizer to twice during the period of extraction to the pregnancy ears, so that the lysine and protein content in Wheat seeds are improved.
3. Moderate seeding period
3.1 seed treatment
Pharmacy should be planted or directly use coated seeds before sowing.
3.2 Sowing period
In order to cultivate strong seedlings, form a Wheat production group with well -developed root systems and a large number of stems, make full use of heat resources, and sowing the appropriate period to lay the foundation for the high -yield of Wheat.Generally, Wheat water holding the water in the field is 70%to 80%.Therefore, when the broadcasting period and soil are conflict, it is necessary to sow the sowing, which can be sowed for 3 to 5 days late, so that the Wheat is full of seedlings.Generally, when the average daily temperature, before the winter & gt; = 0 C, the accumulation temperature is best sowing at 16 ~ 17, 650 C, and 6 leaves and 1 heart seedlings can be formed during wintering.
3.3 Seeding amount
According to the characteristics of Wheat varieties and the amount of Wheat sowing during the sowing period, the semi -winter and weak winter varieties are sown in the middle and mid -October and the end of September, respectively.It is more suitable for sowing from mid -to -late October to late October to early November. The broadcast volume is 120 ~ 150 kg/hectares, and the number of broadcasts will be increased appropriately as the broadcasting period delays.The high -yielded fields above 700 kg/hectares, the basic seedlings can be controlled from 1.8 million to 2.25 million/hectares, and sowing can be reduced to 1.5 million to 1.8 million/hectares at the end of September and early October.For large spikes with low spikes, it is suitable for basic seedlings of 1.95 million to 2.7 million.
4. Scientific field management
4.1 Scientific fertilization and weeding
In order to prevent the phenomenon of non -seedlings from breaking the seedlings and ensure the safe and overwinter of Wheat, it is necessary to make irrigation in time to form a strong root.In order to make the prevention and control effect of weeds, chemical weeding can be carried out from mid -January to late February.From mid -February to the end of February, in mid -to -late March, 75 ~ 120, 120 ~ 150 kg/hectares were applied to promote Wheat back to green and unplugged and increased the division rate of Wheat.In early March, green water should be returned. The medium Fertilizer, low group and high Fertilizer, suitable or large -group Wheat fields are picked up in the first or early stages of extension, and the early stages of extension.
4.2 Chemical regulation to prevent falling down
Wheat is divided into two types: roots and stems. Generally, the stems are inverted, mainly due to the large amount of nitrogen Fertilizers in the early stage, resulting in too large Wheat groups, closed fields, poor ventilation and light transmission, long Wheat long and long, bases and bases.In the middle of the interval, Wheat Wheat occurred in strong winds in the later period.Therefore, in the production of Wheat, scientifically fertilize and water the soil.
4.3 Pumping and grouting maturity period
Wheat pumping and flowing flowers (mid and late April), in order to prevent Wheat aphids, pulp, insects, sticky insects, rust, pink pink disease, and red virus disease, extend the growth period of Wheat, increase yield, can spray pesticides, continuous use of 1 continuous use 1~ 2 times.At the same time, irrigation 1 or 2 times, the first irrigation is performed during the first spikes to keep flowers and granularity and grout to achieve the purpose of large grain, grain weight, and prevent early failure of the root system.Moisture and prepare for the second stubble crops.
5. Get in time
Generally, Wheat is basically mature in the early and mid -June, when the 2/3 of the Wheat ears of the Wheat field are brought yellow, and the end of the Wheat wax is the best harvest period.But Wheat should not be too mature, so as to avoid the seeds from falling off and reduce the harvest.Wheats should be separated from varieties for single, single sun, and single storage, so as not to mixed varieties and reduce the commodity and economic value of Wheat.
What is the best temperature for Wheat seeds to germinate
Wheat seeds can germinate at 4-37 C. The fastest temperature of the germination is 20-25 C, and the average daily temperature is most suitable when sowing at 16-18 C.The minimum temperature of Wheat germination is 0 C, and the maximum temperature is 30-35 C.
The agricultural meteorological indicators of the Wheat suitable for broadcasting are determined according to the actual survey and field trials.Generally, every time the main stem is added, a leaf age must be 70-90 C (low Fertilizer and drought time need to be accumulated more) before winter, and the accumulation temperature is 80-100 C for seedlings, so from sowing to division (3 leaves (3 leaves (3 leaves (3 leaves (3 leaves (3 leaves (3 leavesExpand), the accumulated temperature is about 340 C. Generally, Wheat seedlings grow 6 to 7 pieces of leaves and 3 to 5 stunts as the standard before the wintering.The most suitable date for sowing.
Before the winter, the accumulation of temperature or sowing a spike differentiation accumulated temperature is 450-700 C. Among them, the spring variety is 450-600 C, and the winter variety is 500-700 C.
Due to the instability of the Wheat broadcast period, the determination of the specific year broadcast period must be determined according to the variety of climate ecological adaptability and the weather forecast and agricultural conditions of the year.For example, the moderate Wheat broadcasting period in Beijing is 5 to 6 days earlier than usual, and the autumn warmth year can be delayed by about 5 days.
The moderate broadcasting period of autumn Wheat in plain areas across the country is mainly determined by temperature. The general upper latitude increases for each increase, and the sowing period is 4 days in advance.In the same area, every 100 meters above sea level, about 4 days in advance.In the northern Wheat in the northern winter Wheat area, the moderate broadcast period is from mid -September to early October, the Huanghuai Plain Wheat District is from late September to early October, and the middle and lower reaches of Wheat areas in the middle and lower reaches of the Yangtze River are from mid -October to mid -November.The district is from early November to late.
spring Wheat is suitable for the broadcast period. It is appropriate to sow the average temperature at about 0 to 2 C, and the sowing of the surface of the surface of the surface is 6 to 7 cm. It is best to control the day and night and sow.The Northeast Chunmai District is generally from mid -March to mid -April, early in the south, late in the north; the Chunmai District of the Qinghai -Tibet Plateau is about mid -March and late March; the northwest spring Mai District is from mid -March to mid -April, and the northern part of Xinjiang and the early south.In the same area, generally broadcast low -lying land, and it is better to broadcast high land.