Vegetable pods are locusts that harm rapeseed. Common radish sprouts, cabbage sprouts, and peach amaranth are common. Its harm is sucking rape sap, so that the victim's leaf curls downwards, the plants turn yellow and dwarf, poor growth, and can cause wilting and death in severe cases.
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.
Insect pest control methods: use fresh high-fat membrane + 40% omethoate 800-1000 times solution, or use 50% anti-influx 10 g water 50 kg evenly sprayed; rapeseed meal, cabbage caterpillar, vegetable meal, black insect, Injections can also be used to 2.5% enemy killing, 2.5% time, 20% killing chrysanthemum mixed use.
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