人工模拟产卵地招引黄脊竹蝗产卵试验

人工模拟产卵地是根据黄脊竹蝗成虫产卵时对自然条件的选择习性,人为造就最适环境,招引成虫集中产卵,避免因林内立竹及植被较密等不利生态因素造成的见缝插针式的散产导致的产卵范围扩大以及给查卵和防治工作带来的困难.试验结果表明,在竹林透光度无差异的情况下,对照区卵块密度平均10.4块/m2,人工模拟产卵地平均为21.2块/m2,是对照的2.04倍,而产卵面积却大为缩小,对照区平均0.038hm2,模拟地均为0.01hm2,仅为对照的l/4.不仅可以诱集成虫集中产卵,便于小面积集中防治,而且还可以省工、省时、省力、省经费.

A Study on Artificial Mimicking Oviposition Site to Attract Ceracris Kiangsu Tsai

The Ceracris kiangsu Tsai is a destructive pest of the bamboo stands,the pest mainly feeds on bamboo 1eaves,a large part of bamboo stands have withered and become chloratic, some bamboos even dies, this causes enomous enconomic 1osses.As the pest 1aid eggs disorderly and unsestematiclly in bamboo stands,this causes 1arge difficult for egg investigating and control work,even in dense bamboo stands.According to the ovipositing habit of Ceracris kiangsu adult in natural condition,,the optimal oviposition site was artificially mimicked.The result showed that the egg piece number of the tested is 2.04 times as much as that of contrast,but the egg area of the contrast is 4 times as much as that of the tested.It is benificial for controlling the pest easy and economically.