Spring (turning green to pick flag) management points A return to the Qing period and the upswing. During the return period of wheat, the wheat will not be top-dressed without watering, and the rice will be scratched early. Second, fertilizer watering jointing period. In the general production, the turning-on or standing-up fertilization watering is changed from dressing to watering in the later jointing stage. The specific time for applying fertilizer and water-saving in drawing and drawing should be determined according to the variety, fertility level, lyrics and wheat seedlings. For the large panicle type with low tillering rate, the fertilizer is usually top-dressed at the beginning of jointing (1.5 to 2 cm out of the ground in the first section of the base). For the middle panicle type with high spike-forming rate, the suitable wheat field should be top-dressed and watered at the early stage to the middle stage under conditions of high soil fertility. For wheat fields with high soil fertility and large groups, fertilizers should be applied during the middle to late jointing period (close to fixed length in the first section of the base, and when the flag leaves are exposed). Usually, about 15 kg of urea is applied per 667 square meters. Third, watering flag water or flowering water. The flag-shooting period is the critical period of wheat water demand. At this time, irrigation is beneficial to increase the number of grains per panicle and ensure that the soil is deeply stored for later use. If the wheat flagging period is better, watering can also be postponed until flowering. In the later stage (flag-to-maturity), the management points are: 1. Fill the slurry. The high soil moisture content of wheat after flowering will reduce the quality of strong gluten wheat. Therefore, strong gluten wheat should pay attention to controlling the soil moisture content after flowering, and should not be too high. On the basis of flagging water or flowering water, it is unnecessary to irrigate, especially to avoid watering wheat yellow water. Second, prevent pests and diseases. Wheat diseases and pests can cause wheat grains, seriously affecting quality. Powdery mildew, rust, locusts, etc. are common pests and diseases of wheat in the later period. It is imperative to strengthen forecasting and timely prevention and control. For the pollution-free production of wheat, high-efficiency and low-toxicity insecticides should be used, such as imidacloprid and acetamiprid to control wheat aphids. Commodities such as 2.5% imidacloprid wettable powder, 10% imidacloprid soluble powder, and 2% genistein will be used. Third, the wax harvested at the end of the harvest, straw returned to the field. The high-yield wheat field uses the nitrogen fertilizer post-shifting technique, and the 1000-grain weight at the mid-wax ripening stage to the waxing stage is still increasing. So don't harvest prematurely. Harvested at the end of wax production, the grain weight of the grains is the highest. At this time, the nutritional quality and processing quality of the grains are also optimal. The appearance of wax-matured plants showed that all the stems turned yellow and the leaves were yellow, and the stems were still elastic. The moisture content of the seeds was about 22%. The color was close to the inherent luster of the variety and it was hard. Promote harvesting with a combine harvester and return wheat straw to the field.
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