In October, it was the occurrence of adult worms, which mainly harmed rapeseed seedlings, resulting in the lack of seedlings and broken ridges. In severe cases, the whole field destroyed the seedlings, and the fields with high insect pests should be promptly controlled.
The bait trapping uses hot water to dissolve the 90% crystal trichlorfon into 30 times liquid, take 1 kg of liquid, mix well with 30-50 kilograms of sauteed wheat bran or cake flour, and spread it to the rapeseed line in the evening. Trapping 2 or 3 times.
Heap trapping and killing utilizes the habit of concealment during the daytime. A certain number of 5-15 cm thick grass piles are set in the field or the top of the rapeseed field, and a large number of nymphs and adults are trapped to concentrate hunting.
Chemicals control 20% of fenvalerate EC per acre 30 kg of water and 40 kg of water from the rape field to the center around the spray control, once every 7 days, continuous control of 2 or 3 times.
The bait trapping uses hot water to dissolve the 90% crystal trichlorfon into 30 times liquid, take 1 kg of liquid, mix well with 30-50 kilograms of sauteed wheat bran or cake flour, and spread it to the rapeseed line in the evening. Trapping 2 or 3 times.
Heap trapping and killing utilizes the habit of concealment during the daytime. A certain number of 5-15 cm thick grass piles are set in the field or the top of the rapeseed field, and a large number of nymphs and adults are trapped to concentrate hunting.
Chemicals control 20% of fenvalerate EC per acre 30 kg of water and 40 kg of water from the rape field to the center around the spray control, once every 7 days, continuous control of 2 or 3 times.
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