In recent years, the pests such as pear-like insects and pear-sucking mosquitoes that have been over-wintered in the soil have been worsened year by year. A little carelessness will make the whole pear fruit unrestricted. Its prevention and control technology:
1. Strengthen agricultural control and reduce insect sources (1) Tillage in winter; turn the pests that fall on the ground into the ground, and turn over the winter pests to the ground to destroy the sleeping environment of pests. According to field investigations, the damage rate of pear larvae to young fruit was reduced by 9.3% compared with pear cultivating without ploughing; the damage rate of pear mites decreased by 7.8%.
(2) Weeding in the early spring, keeping the pear garden clean and destroying the habitat of pests.
(3) In the pear orchard where the pear mites are not serious, the insects and leaves can be removed manually.
2. Focus on the ground and spread the medicine at the beginning of the wintering adult. Apply 4 kg of 5% trichlorfon powder to the acre, and mix fine soil or fine sand in the canopy drip line between rows. The effect is better. If there is light rain or shower after the application, the effect will be more obvious.
3, the appropriate crown spray in the pear beetle damage period, pear real bee and pear cockroach mosquito peak period, drug control can play a role before the pressure control. Control pear aphids can use 90% crystal trichlorfon 700 times liquid or enemy kill 2.5% emulsifiable oil 1500 times liquid; control pear real bee can use chlorpyrifos 20% emulsifiable concentrate 2000 times liquid or 40% omethoate 1200 times liquid 2% insecticidal double 500 times solution can be used to control pear mites.
Huaxian County Agricultural Products Inspection and Testing Center Chang Bili
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