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梨木虱主要为害梨树,成虫、若虫均以刺吸口器吸食叶片和嫩梢的汁液。受害轻时叶片发生褐色枯斑,严重时整叶变黑脱落。梨木虱能分泌粘液,不仅果实被污染,而且诱生其它霉菌。梨木虱为害极大,令人烦恼。由北京华戎生物激素厂生产的新型杀虫剂——“绿剑”1%乳油,防治梨木虱效果显著。该产品由1%的有效成分与24%的渗透剂复合而成,渗透快,破蜡效果显著,对梨木虱速效性好,持效期长,并具有
Pear lice are the main damage pear, adult, nymphs are thorn suction device to suck the leaves and young shoots juice. Injured light leaves brown spots, serious black leaves off the entire leaf. Pear lice can secrete mucus, not only the fruit is contaminated, but also induced other mold. Pear lice great harm, troubling. By Beijing Huarong bio-hormone plant production of new pesticides - “Green Sword ” 1% EC, prevention and control of pear psylla significant effect. The product is composed of 1% active ingredient and 24% osmotic agent, which has the advantages of rapid infiltration, remarkable breaking effect on wax, fast and long-lasting effect on pear psylla, and has