Drought field attention to flood control

Drought field attention to flood control

Locusts are the main pests on rape. When the winter and spring droughts are serious, the occurrence of heavy land in the lack of irrigation conditions will lead to yield loss. Control methods: (1) During the growth of rapeseed, remove the weeds in the field and nearby, and combine the seedlings, seedlings or transplants to remove the pods. After sowing, the soil was covered with pesticide and sprayed with an insecticide before transplanting. Properly dense planting, increase the ventilation of the field. Timely cultivating soil and cultivating strong seedlings. (2) Yellow traps. Rape seedling period, set the yellow board in the field, the method is to 0.33 square meters of plastic film painted gold, and then painted a layer of petrolatum or oil, 0.5 meters above the ground in the ground, you can trap a large number of crickets. (3) medication control. In the seedling stage, there are 10% strains of pupa, and the density of larvae is 1-2 per plant; 10% of the stems or inflorescences of the twigs have an aphids at the flowering stage, and each locust has 3 to 5 locusts. Use 10% imidacloprid wettable powder 20 grams per acre, or 3% acetamiprid EC 40 to 50 ml, or 50% anti-inferior wettable powder 10 to 18 grams, or 2.5% lambda-cyhalothrin EC 10~ 20 ml water spray control.

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