Vegetable pods refer to locusts that harm rapeseed, and there are three kinds of common radish sprouts, cabbage sprouts, and peach amaranth. 3 different dishes are often harmed together. The juice of rapeseed was sucked, the victim's leaf curled downwards, the plants turned yellow and dwarf, and the growth was not good. In severe cases, it could cause wilting and death.
The cabbage caterpillar is a larvae of cabbage caterpillar that is harmful to rape. The first instar larvae feed on the back of the leaf. The older larvae feed on the foliage and bite the oil into the hole. In severe cases, only petiole and veins remain.
Vegetable pods are the larvae of diamondback moth that harm rape, and the larvae often break into the leaf tissue or stems from the back of the heart, and often cause careless strains.
Black-shelled insects refer to coleoptera, which harms the rapeseed. The larvae are mostly concentrated in the back of the leaf and the heart is harmed. The leaves are eaten into holes and nicks. In severe cases, only petiole and veins remain.
Pest control methods: use fresh high-fat membrane + 40% omethoate 800-1000 times solution, or use 50% anti-influx 10 g water 50 uniform spray; rapeseed meal, cabbage caterpillar, rape meal, black worm, Also can use the new high fat film + 90% crystal trichlorfon or 80% dichlorvos EC 800 ~ 1000 times liquid spray, can also be used for injection 2.5% enemy killing, 2.5% time, 20% killing chrysanthemum mixed use. Most of the four pests are harmed by the leaves and leaves, so pay attention to the leaves and the heart when spraying. Effectively prevent the occurrence of insect pests.
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