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昆虫保幼激素类似物(JHA)对多种蚜虫具有高效。一些重要的JHA对棉蚜、蔬菜蚜、麦蚜具有较强的生理活性,主要表现在降低害虫种群数量,导致当代或下一代的不育。一些JHA虽对害虫杀死较慢,死亡率不高,但由于高效、低毒、低残毒、选择性等特点亦有可能成为蚜虫防治的重要药剂。 目前防治蔬菜蚜多采用0.04—0.02％乐果(有效成分)喷雾。本试验以738与乐果混用以观察高虫口密度情况下的效果。
Insect juvenile hormone analogues (JHA) are highly effective against many aphids. Some important JHA have strong physiological activity against cotton aphid, vegetable aphid and wheat aphid, mainly in reducing the population of pests and leading to the infertility of contemporary or next generation. Although some JHA kill slow pests, the mortality rate is not high, but due to high efficiency, low toxicity, low residue, selectivity and other characteristics may also be an important agent for the prevention and treatment of aphids. At present, the prevention and control of vegetable aphids more than 0.04-0.02% dimethoate (active ingredient) spray. This test to 738 mixed with dimethoate to observe the effect of high population density.