Nitrogen fertilizer promotes high yield of wheat

Recently, the weather has turned warmer, wheat has begun to turn green, and topdressing has begun. In order to promote high quality and high yield of wheat, nitrogen fertilizer post-shifting technology can be used in the fertilization process.
Disadvantages of traditional fertilization methods Traditional wheat fertilization is generally divided into two times. The first time is to plough a part of nitrogen fertilizer into the ground with the cultivated land before the planting of wheat, called the bottom fertilizer; the second is the spring top dressing combined with spring watering. The base fertilizer generally accounts for 60%-70%, and the topdressing fertilizer accounts for 30%-40%. The top dressing time is generally in the greening period to the rising period, and some increase the topdressing when the winter water is poured before wintering. In high-yield fields, such fertilization time and bottom-fertilization ratio will cause the wheat field population to be too large, and the number of inefficient tillers will increase. The wheat is in the middle of the field, and the wheat field is poorly shaded. The lower leaves can not effectively use the solar energy, causing premature aging, which greatly increases. The risk of lodging in late wheat affects wheat yield and quality. Furthermore, due to the early development of wheat, the root system is underdeveloped and the number of secondary roots is small. It is difficult to effectively absorb the nitrogen fertilizer in the soil. The nitrogen is difficult to be fixed by the soil, and it will be difficult to be absorbed by the crop as the precipitation penetrates into the soil. .
The post-transfer technology of nitrogen fertilizer post-production technology to increase nitrogen production is to postpone the application of nitrogen fertilizer in wheat high-yield fields, and then postpone it to the jointing stage (mid-April). If the soil with high soil fertility is planted, the variety with high tillering rate can be moved to the jointing stage to the flag leaf tip. At the same time, the proportion of nitrogen fertilizer as base fertilizer should be reduced to 50%, and the proportion of top dressing increased to 50%. The proportion of fertilizer in the wheat field with high soil fertility can be reduced to 30%-50%, and the proportion of topdressing is 50%-70%. The technology focuses on the application period and application rate of nitrogen fertilizer in the middle and late growth stage of wheat. At this time, the wheat root system is developed, the growth rate is fast, and the fertilizer demand is large. Therefore, the nitrogen fertilizer absorption and utilization rate is high, and the effective tiller can be effectively controlled. Excessive hyperplasia, shaping the firmness of the flag leaf and the inverted two leaves, so that the unit land area can accommodate more spikes, and at the same time can promote the root system, increase the deep root coefficient of the soil and the root activity in the later stage, which is beneficial to prolong the photosynthetic product to the grain. Transfer time, increase grain weight, improve quality, and increase production.