The main pests that damage the autumn cabbage are: aphids, cabbage caterpillars, diamondback moth, cotton bollworm, cabbage butterfly, yellow striped triceps, seed fly, and ground tiger.
Aphid locusts are harmful during the entire growth period of autumn cabbage, and the most serious harm in the middle and late period, can be used 10% imidacloprid 1500 times or 50% anti-inferiority WP 2000 ~ 3000 times spray. Use 10% 蚜虱 net wettable powder 10 grams per acre, water 50 kg, or 500 grams of urea per acre each time, 125 grams of detergent, add 50 kg of diluted water mix and spray, the effect of 90%.
The larvae of species fly, ground tiger, yellow-spotted fly, ground tiger and yellow-striped flea jeopardize the roots of autumn cabbage. The adults of yellow-striped flea jeopardize the leaves of autumn cabbage, bite into small holes, and can eat seedlings. Chemical control is best started from around the cabbage field, gradually annihilate in the middle to prevent escape. Mix 90% trichlorfene or 50% phoxim with 10 kilograms of water, mix in 50 kilograms of wheat bran and crushed fresh vegetables to form a bait. Spread it on the ground around the cabbage roots in the evening.
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