What medicine does Liu Shuxin use to treat insects?

The borers are mainly longicorn beetles, which can be controlled by applying pesticides in Qian Qian in the larval stage, and by spraying 300 times of 15% fenxianqing solution at high pressure in the larval stage. Prevention should be given priority. For example, choose strong seedlings without pests and diseases to breed, plant thinly, strengthen ventilation, control irrigation and drain water in time; When sowing and raising seedlings, it is necessary to interval and fix seedlings in time, strengthen daily tending management and improve the ability to resist pests and diseases.

Remove and burn the branches and leaves of pests and diseases to prevent the breeding of pests and diseases. Can also be used to kill adults, larvae and destroy egg pieces; Keep natural enemies and other methods for prevention and control. It can also be controlled by dimethoate, trichlorfon, cartap, sulfur and phosphorus emulsion, Bordeaux mixture and other drugs.

Extended data

The main pests that harm weeping willows are Liujinhua insect and aphid. Both of them are leaf-eating pests. The sulfur mixture can be sprayed 3 ~ 5 times in early March, and 25% diflubenzuron No.3 can be sprayed 2000 times in early April. In midsummer, a small number of pests can be seen, such as willow beetles, ladybugs, inchworms, thrips curvata and so on. Methamidophos or 40% omethoate 0. 1% solution can be sprayed alternately for prevention and control, once a month.

The main diseases are rot and ulcer. The prevention and control measures are mainly to strengthen management, strengthen tree potential and improve their own disease resistance. When the disease is mild, cut 0.5cm vertically and horizontally on the diseased branches to reach the xylem scar, and then spray the following bactericide 15% aqueous caustic soda solution 21:10 ~1:kloc-0/2 soda water 200 times solution 4, without removing it.

For plants with serious diseases, it is necessary to pull them out in time and isolate them from non-disease plants to prevent proliferation. The replaced diseased plants should be burned in time to effectively control the spread of germs.

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