First, strengthen field management. Do a good job of spring maintenance to prevent the animals from indigo and trample the plots. Do a good job wheat field film work, spring wind, there are holes in the membrane, the membrane edge leakage, remove the film at the Department of membranes, timely soil sealing pressure strict, prevent winds lift film, while preventing trample damage to the plastic film.
Second, prevent frost damage in the spring. Per acre to spray 0.5% potassium dihydrogen phosphate solution 30 ~ 50 kg to prevent early spring frost damage; has been a slight freeze damage to wheat fields, do not remove frozen leaves, so as to avoid tearing caused by mechanical damage, can also take topdressing urea and other freezing damage measures .
Third, the spring cultivator weeding. Regardless of whether the seedlings are good or bad, they must be re-used every time they return to their hometowns in order to ensure warming and strengthen the weak. The ploughing and weeding are combined with manual weeding; if the weeds are severe before jointing, chemical weeding can be performed. Chemical weeding should be carried out at an average temperature of about 10°C. It should be done on a sunny day. We must use chemical pesticides to select pesticides on the roads. Grasp the time and amount of pesticides so as not to cause phytotoxicity.
Fourth, as early as fertilizer. In the weak field, it is urgent to chase chemical fertilizers. There are three methods: First, in the early days of returning to the land, when the soil returns to the tide, fertilizer is applied between the rows; After snowfall in early spring, nitrogen fertilizer was timely applied to the snow, fertilizer was infiltrated into the soil through snow water, and the third was rain and fertilizer. Before and after jointing, in the event of rainfall, fertilizer can be applied before the rain. The average fertility rate of urea in the wheat field is 5-7 kg. If the basal fertilizer is used with sufficient and no shortage of fertilizers, it may not be top-dressing during fertility.
Fifth, to promote chemical control technology. At the beginning of the jointing season of winter wheat, 30 mu per ton of Tianbao, 15 kg of water are used for foliar spraying, or 50 to 100 grams of Mufeng Zhuangfeng'an, and 30 kg of water are used for foliar spraying to promote weak growth and strong growth. Promote the number of acres per mu and prevent lodging. The wheat flowering-filling period uses 30 ml per ton of land and 15 kg of water for foliar spraying to increase grain number per panicle and increase grain weight.
Sixth, strengthen one spray and three defenses. In the grain filling stage, through a mixed spraying of fungicides, insecticides, foliar fertilizers, etc., at the same time to achieve the purpose of disease prevention (rust, powdery mildew), pest control, anti-dry hot wind. From the 10th day after flowering, it usually takes 1 to 3 times, 7 to 10 days apart. "One spray and three defenses" can be selected from one of the following two formulas: Formula 1: 15% triazatonone wettable powder per acre 60 ~ 80g + 10% imidacloprid 20 ~ 30g + potassium dihydrogen phosphate 100g , Watering 30 kg spray; Formula 2: Mu with potassium dihydrogen phosphate 100 g +20% Triadimefon EC 50 ml + anti-Bai Wei or 30% Feng Bao EC 40 ml ml + T Table 30 ml mixed foliar spray. It is generally chosen to spray on a cloudy or sunny evening or when the morning temperature is low.
Seventh, pest prevention and control. Focus on prevention of pests and diseases such as strip rust and wheat stubble. Stripe rust and powdery mildew require "precise monitoring, drug reconnaissance, discovery, and control" prior to jointing, early detection, early prevention and control. Locusts take early spring pressure, remove weeds and other measures.
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