What happens when there is a pest in autumn cabbage?

Locusts are harmful during the entire growth period of autumn cabbage, and the most serious harm in the middle and late, can be controlled by the following methods: 1, with 10% imidacloprid 1500 times or 50% anti-inferiority WP 2000 ~ 3000 times spray. 2. Use 10% WP WP 10 grams per 667 square meters, dilute 50 kg, or 5% hypertonic butyl thiocarbacarb EC 30 to 40 ml, dilute 50 kg of water and spray the leaves on both sides. The control effect is over 95%. 3,667 square meters of urea 500 grams each time, washing powder 125 grams, plus 50 kg of diluted water spray mix, the effect of 90%. The larvae of the species fly, ground tiger, and yellow-striped flea jeopardize the roots of autumn cabbage. The adults of the yellow-striped flea jeopardize the leaves of the 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 and mix in 50 kg wheat bran and crushed fresh vegetable leaves to form bait. Spread it on the ground around the autumn cabbage roots in the evening. Yellow beetle adults are most active at 26°C and are severely hazardous. They can use the above pesticides to dilute water 1000 times and 667 square meters with 50 kg liquid spray. The larvae of Pieris rapae, Plutella xylostella, Brassica juncea, and Helicoverpa armigera are important pests in the early stage of the autumn cabbage. Before the third instar larvae is a critical period for chemical control, it can be used 5% Suppository 2500 times emulsion or 2.8% enemy killed 800 times spray, 667 square meters with 50 kilograms of liquid.

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