Teach you to correctly understand i wheat "one spray and three defenses"
What is wheat "one spray and three defenses"? “One spray and three defenses†refers to the use of sprays of pesticides, fungicides, plant growth regulators, foliar fertilizers, etc., from the heading of wheat to the milk-ripening period to prevent pests, dry heat, and lodging. A technical measure to increase wheat production. "One spray and three defenses" have a ripple effect? Affected by rising temperatures, increased humidity and Other conditions, it is currently the most concentrated time for outbreaks of wheat diseases and pests; currently a key period for the formation of wheat grains and 1000-grain weight; at the late stage of wheat growth, plant growth weakens, roots age, vitality declines, and disaster-resistance declines. At present and in the future, frequent high temperatures, frequent heavy rains, and abnormal weather exceed the limits of fertility tolerance in wheat. Carrying out "one spray and three defenses" is undoubtedly an effective measure to solve the above problems. How to carry out "one spray and three defenses" on wheat? 1. Application principle: The medicine should contain fungicides against scab and other scald diseases, insecticides against stem and leaf diseases such as powdery mildew and rust, insecticides against leaf or sucking insects, and insecticides. Dry hot wind foliar fertilizers and conditioners to prevent premature aging of wheat. If there is an outbreak of diseases or insect pests or climate abnormalities, increase the dose. 2. Opportunity: Two morning sprays in the morning or afternoon of the full-season wheat without wind, pay attention to avoid the high temperature, two spraying intervals of 20 days. 3. Pharmacy selection: 0.3% to 0.4% of potassium dihydrogen phosphate, 0.1% to 0.2% of boron and 2% to 3% of urea and 4.5% of cypermethrin may be used for the first time; 48% of chlorpyrifos plus +10% of imidacloprid 25% tebuconazole 25ml or 50% carbendazim + 18% benzoylzinc 20g; 15% triadimefon + seawater 20ml agent. The second time can use 0.3% ~ 0.4% of potassium dihydrogen phosphate, 1% ~ 2% of urea + 4.5% cypermethrin or 48% chlorpyrifos + 20ml of sea chlorophyll agent. Plastic Card,Smart Card Reader,Access Control Tag,Access Control Card Reader GRANDING TECHNOLOGY CO LTD , https://www.grandingsecurity.com