#头条创作挑战赛##防治玉米钻心虫用什么药效果好#在防治玉米螟时, choosing the right type of pesticide and how to use it is crucial. Tests in recent years have shown that the following agents have good effects on the control of corn borer worm and are cheap.
1. Emamectin benzoate and cypermethrin: suitable for early prevention or use in the early stage of pest occurrence. 50g~70g of 3.2% emamectin benzoate and cypermethrin per mu.
2. Emamectin benzoate and lice mite urea: This formula can effectively kill eggs and insects, and has a long duration of effect. Generally, 20ml of 3% emamectin benzoate and lice mite urea are used per mu.
3. Emamectin benzoate and chlorfenapyr: suitable for the period of high incidence of pests, and obvious effects can be seen 1-2 hours after medication. However, the cost is higher, and 30ml of 12% emamectin benzoate and chlorfenapyr suspension agent is used per mu to spray evenly.
4. Emamectin benzoate and indoxacarb: suitable for use at the bell stage or early ear stage, effective for resistant corn borer, and has a long effective period. Spray evenly with 15ml of 10% emamectin benzoate and indoxacarb per mu.
5. Emamectin chlorantraniliprole: This formula has the dual effects of contact killing and stomach toxicity, and at the same time, it also has very good systemic conductivity, which can control dozens of pests such as corn borer, beet armyworm, armyworm and so on. It is recommended to use 20ml of 11.6% emamectin chlorantraniliprole suspension.
6. Phosphine granules, 3% permethrin chlorpyrifos granules, etc., can be applied in the heart leaves with 2~3 kg of 3% phosphine granules per mu when the corn grows to the large flare stage, which has a good control effect on corn borer.
