Key points of Management Technology of Wheat

The key point of winter wheat management in spring is to make more spikes, large spikes and lodging prevention as the goal. in the stages of wheat turning green, getting up, jointing and flag picking, the application of fertilizer and water should be determined according to the level of soil fertility and the growth status of wheat seedlings. The main technical points of wheat management in spring are introduced as follows:

1. Rejuvenation period

Fertilizer and water for turning green should be determined according to the situation of seedlings. In fields with sufficient bottom fertilizer, fertilized and watered in winter or with high soil fertility, fertilizer and water can not be applied at the stage of returning to green. In dryland or late sowing wheat fields, the growth of wheat seedlings is weak, and fertilizer and water at the stage of turning green play an important role in promoting tillering and increasing panicle rate. Urea 15~25kg or ammonium bicarbonate 50~70kg can be applied after turning green, and nitrogen fertilizer should not be excessive in wheat fields with poor soil fertility. If the base fertilizer phosphorus and potassium fertilizer is insufficient, it is necessary to apply phosphorus and potassium fertilizer.

2. The starting period

The application of fertilizer and water at the starting stage can consolidate the tillering before winter, promote the tillering in spring and increase the panicle rate of tillers, especially for the strong seedlings with smaller population, which can be applied with urea 10~15kg per mu, and for the fields without fertilization and moderate population size in winter, fertilizer and water also have a good effect in this period. For the fields that are controlled by deep and medium ploughing and the population is too large during the returning green period, little or no fertilization should be applied in this period.

3. Jointing stage

In the wheat field with insufficient topdressing in the returning green stage, urea 10kg should be applied again in the middle jointing stage. if the wheat shows the symptom of trace element deficiency, but also targeted spraying zinc, manganese, molybdenum and other micro-fertilizers during this period can effectively increase the seed setting rate, promote grain fullness and increase yield. For strong gluten wheat, nitrogen fertilizer should be applied once at flowering stage and urea 4~5kg should be applied per mu.