Dry heat prevention of wheat

In order to significantly improve the microclimate conditions in the field, reduce the damage of dry hot wind, and facilitate the interplanting of wheat and summer sowing. According to observations, after pouring wheat yellow water, the wheat field near the ground temperature can be reduced by 2°C, and the grain weight of wheat increased by 0.8 to 1 g.
Fertilizer spraying fertilizer in the early stage of wheat flowering to filling with 1% ~ 2% urea solution, 0.2% potassium dihydrogen phosphate solution, 2% ~ 4% superphosphate calcium leachate or 15% ~ 20% of ash leaching liquid for foliar spray fertilizer Each spray of 50 to 100 kilograms per acre can accelerate the growth and development of wheat in the later period, and prevent or reduce the damage of dry hot wind, generally increasing production by 8% to 15%.
Foliar sprayed vinegar in wheat filling stage, spraying with 0.1% acetic acid or 1:800 vinegar solution, can reduce the opening angle of stomata on the leaves, inhibit transpiration, improve plant drought resistance, heat resistance; At the same time, acetic acid also It can neutralize the free ammonia produced by plants under high temperature conditions, thus eliminating the harm of ammonia to wheat.
Foliar spray hormones were sprayed once at the heading and flowering stages of wheat with 0.5 ppm triacontanol solution, which increased the number of grains per ear by 8.1%, increased grain weight by 5.6% to 6.8%, and increased production by 10% to 20%; During the period from flowering to filling, wheat is sprayed with 1000 times oil booster solution for 50 kilograms. It can prevent dry hot wind and increase grain weight by an average of 7.8 percent. Before wheat is grouted, it sprays 50 ppm of naphthyl acetic acid solution at 50 kilograms to increase grain weight; During the grain filling period, 25 kg of 60 ppm phenoxyacetic acid solution is sprayed in the mu, which also protects against dry hot wind and increases the grain weight.