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菜白蝶(pieris rapae Linaeus)幼虫是十字花科蔬菜主要害虫之一,发生量大,严重影响蔬菜产量和品质。为准确了解菜白蝶幼虫猖獗情况、扩散行为,做到科学地取样调查,以经济有效地进行防治,必须了解菜自蝶卵和幼虫田间分布型以及取样办法和适当的取样样本数。
Pieris rapae Linaeus larvae are one of the major pests of cruciferous vegetables. They occur in large quantities and seriously affect the yield and quality of vegetables. In order to get an accurate understanding of rampant larvae of Panax notoginseng and their spreading behaviors and to conduct scientific sampling and investigation in order to control them economically and effectively, it is necessary to know the field distribution patterns of vegetables and their sampling methods and appropriate sample numbers.