Special Mic What are the purpose of urea fertilizer and efficacy agricultural urea?
1. The role and efficacy of Urea Fertilizer
Urea is a type of nitrogen fertilizer. It is a typical amide nitrogen fertilizer with a nitrogen content of 46%. It is also the highest nitrogen -containing nitrogen fertilizer. It is suitable for various soils and crops. It has a wide range of applications. So what are the effects and effects of Urea?
1. Promote crop growth
Nitrogen in Urea is one of the nutritional elements necessary for crop growth and development.And if the crops are deficient in nitrogen fertilizer, the plants will be lighter and the old leaves become yellow;fruit trees are small, less fruit, thick peel, hard Skin, hard and hard.
2. Promote the development of crops in the growth period of growth
During the growth stage of crops, Urea on crops can promote the development of crop (especially fruit trees).The use of Urea for crops can promote the nitrogen content of crop blades, speed up the growth of new shoots and inhibit flower buds.
3. Killing pests
Urea is used as leaf Fertilizer, while killing the crop, it can kill pests.After dissolving Urea and laundry powder with water, the crop surface is sprayed on the crop. It can quickly supplement the crop to supplement Fertilizer and effectively kill some pests.The killing performance of software pests such as green insects, aphids, and red spiders has reached more than 90%.As a neutral Fertilizer, Urea is easily absorbed by the leaves, and the damage to the crop is very small.
2. What are the uses of agricultural Urea
In terms of agriculture, Urea is used as a Fertilizer, and there are many uses. The main uses are the following:
1. Fertilization
(1) Urea is a neutral speed -effective nitrogen fertilizer, which can be used as base Fertilizer, topdressing, and leaf surface Fertilizer. The main function is to promote cell division and growth, and promote the leaves of the plant.
(2) If Urea wants to be used for Fertilizer, the seeds and Urea should be kept a certain distance to avoid direct contact.
2. Adjust the amount of flowers
Apple small years, about 5-6 weeks after the apple tree blooms, 0.5%Urea solution is applied to the leaf surface, spraying twice continuously, which can increase the nitrogen content of the leaves, accelerate the growth of new shoots, and inhibit the differentiation of flower bud.
Peach trees are more sensitive to Urea. After spraying 8-12%Urea solution, within 7-14 days, sparse flowers can be achieved.
4. Prevention and treatment pests
According to the proportion of Urea: washing powder: clear water = 4: 1: 400, mixes evenly, spray the leaf surface, and can prevent and treat pests such as aphids, red spiders, vegetables and other pests on crops such as fruit trees, vegetables, cotton.
5. Do feed additives
For cows above June, sheeps over March can be added to daily feed.Under normal circumstances, the amount of Urea should not exceed 1%of the dietary and dry substances, and it can also be used by adding 15-20g Urea per 100kg weight.
6. rice species
During the spikes and beginning of the rice, 1.5-2%Urea solution is used to spray the parent or mother, which improves the bisection rate of the parents.