Sick plants

Ligustrum microphyllum has a strong ability of restoration and growth, and is barren-tolerant, which is mostly used for extensive cultivation in suburbs. Generally, contact insecticides can be used for caterpillars from mid-June to the end of 10, such as dichlorvos, cypermethrin EC series, chlorpyrifos and acephate. Blowing scale insects is very annoying. There are many plants growing in Du Ying, which are usually controlled from May to June. This is their breeding season, so some pruning is needed. The adults have strong drug resistance, so the control should be started at the end of April and the beginning of May, and Magnolia grandiflora should be treated once when it blooms. 1, combined with pruning, cut off insect branches appropriately to reduce the density of insect population. ?

2, ventilation and light transmission, inhibit the spread of reproduction.

3, artificial prevention and control check at any time, by hand or with tweezers clip off female insects and oocysts, or cut off branches and leaves.

4. Biological control protection or introduction of red ladybug and Australian ladybug to prey on scale insects is one of the most successful cases in the history of biological control. Because of its great predation, it can achieve the purpose of effective control.

5. For the drug control of newly hatched nymph powder during the transfer period, 40% omethoate 1000 times solution, 50% cartap 1000 times solution, or 400-600 times solution of ordinary washing powder can be sprayed every 2 weeks for 3-4 times continuously.