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本文从菜田生态系统的角度出发,就黄曲条跳甲Phyllotreta striolata(Fabricius)取食诱导对小菜蛾Plutella xylostella(L.)造成的影响进行了研究。黄曲条跳甲取食诱导对小菜蛾取食的影响比较明显,一般来说,黄曲条跳甲少量或短时间的取食会刺激小菜蛾幼虫在相应叶片上的取食,反之则会抑制;而且不同的寄主,不同完整度的叶片(即是否被黄曲条跳甲取食过)上的承载能力不同,芥菜、白菜、菜心和萝卜的承载力弱于甘蓝和芥蓝,黄曲条跳甲取食过的叶片弱于未被黄曲条跳甲取食过的叶片;不同数量的黄曲条跳甲取食对小菜蛾的产卵量影响显著,对其余生物学参数影响不显著,少量的黄曲条跳甲取食会刺激小菜蛾的产卵,多数则会抑制。
In this paper, from the perspective of vegetable field ecosystem, the effects of feeding induced by Phyllotreta striolata (Fabricius) on Plutella xylostella (L.) were studied. The effect of feeding on the diamondback moth, Plutella xylostella, is more obvious. In general, the small or short feeding of the hopper toxoid will stimulate the feeding of diamondback moth larvae on the corresponding leaves, and vice versa The bearing capacity of different hosts and leaves with different degrees of completeness (that is, whether they were fed by Bemisia tabaci) was different from that of Brassica juncea, Chinese cabbage, Brassica campestris and Radish The leaf fed on the curved skipper was weaker than the leaf fed on the untested skipper. The different amount of feeding on the diamondback moth showed significant effects on the fecundity of the diamondback moth, which affected the other biological parameters Not significant, a small amount of yellow striptep feeding will stimulate the diamondback moth spawning, most will be inhibited.