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小菜蛾是我省蔬菜最主要虫害,近几年来,伴随着人们种植水平的提高和反季节蔬菜、渡淡蔬菜栽培技术的开发利用,许多十字花科在菜田全年均有种植。为害虫提供了大量的寄生场所和丰富的食料来源,加上该虫世代多,重叠明显,防治频繁,导致对许多农药产生抗性,菜农又缺乏科学防治手段,盲目增加用药量、用药次数,甚至使用了剧毒农药,加剧了小菜峨的再生猖獗,成为蔬菜农药残留的主要因素,为此我们从1989年开始对该虫防治技术进行探讨,总结出一套综合防治技术。
Plutella xylostella is the most important vegetable pest in our province. In recent years, along with the improvement of people’s planting level and the development and utilization of anti-season vegetables and transplanting vegetables, many cruciferae are planted in vegetable fields throughout the year. The pest provided a large number of parasitic sites and a wealth of food sources, coupled with the worm more generations, obvious overlap, frequent prevention and control, resulting in resistance to many pesticides, vegetable farmers lack of scientific means of prevention and control, blindly increase the dosage, the number of medication, Even the use of highly toxic pesticides, exacerbated the rampant canopies regeneration, a vegetable pesticide residues as the main factor, for which we started from 1989 on the pest control technology, summed up a comprehensive control technology.