What is wheat "one spray three defenses"?
"One spray three prevention" refers to the use of pesticides, fungicides, plant growth regulators, foliar fertilizers and other compounding agents spray from wheat heading to milking stage to prevent pests and diseases, dry heat prevention, and lodging prevention. A technical measure to increase wheat production.
"One spray three defenses" has an awkward effect?
Affected by conditions such as temperature rise and humidity increase, it is currently the most concentrated time for wheat pests and diseases; it is the key period for the formation of wheat grains and 1000-grain weight; in the late growth stage of wheat, plant growth is weakened, roots are aging, vitality is reduced, and disaster resistance is reduced. At present and in the future, high temperatures are frequent, heavy rainfall occurs frequently, and climate anomalies exceed the limits of wheat tolerance. Carrying out "one spray and three defenses" is undoubtedly an effective measure to solve the above problems.
How to "spray three defenses" on wheat?
1. Principle of application: The agent should contain a fungicide for preventing panicle disease such as scab, a treatment agent for stem and leaf diseases such as powdery mildew and rust, and an insecticide for preventing leaf or sucking mouth insects. Dry hot wind foliar fertilizer, and a regulator to prevent premature aging of wheat. If you encounter a certain pest or disease outbreak or climate anomaly, you need to increase the dosage.
2. Timing: In the morning or afternoon when there is no wind in the wheat heading stage, the whole field spray is carried out twice, taking care to avoid the high temperature, and the spraying time is 20 days.
3. Agent selection: For the first time, 0.3% to 0.4% potassium dihydrogen phosphate, 0.1% to 0.2% boron fertilizer and 2% to 3% urea + 4.5% cypermethrin can be used; 48% chlorpyrifos + 10% imidacloprid + 25% tebuconazole 25ml or 50% carbendazim +18% benzproppirazole 20g; 15% triadimefon + sea chlorophyll 20ml agent. For the second time, 0.3% to 0.4% potassium dihydrogen phosphate, 1% to 2% urea + 4.5% cypermethrin or 48% chlorpyrifos + sea chlorophyll 20 ml of the agent can be used.
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