摘要
在对毛竹尖胸沫蝉为害毛竹新梢数量、每枝新梢的平均叶片数 ,以及毛竹不同径阶的株均叶片数进行测定的基础上 ,通过人工剪去新梢模拟危害 ,建立经济损失Y与危害程度X的回归模型 ,结合实际情况确定了毛竹尖胸沫蝉的防治指标为 2 60 5 7头
The fallen leaves caused by Aphrophora notabilis and average leaves of per bamboo with different diameter grades were measured.A test was taken in which pest's harm was simulated by getting rid of new grown tops of bamboo.A regression equation between economic losses and degree of pest's harm was set up based on the test,and the control index of Aphrophora notabilis was proposed to be 260 57 insects per bamboo.
出处
《中国森林病虫》
北大核心
2002年第6期14-16,共3页
Forest Pest and Disease
关键词
毛竹
尖胸沫蝉
防治指标
Aphrophora notabilis(Walker)
control index
Phyllostachys heterocycla cv pubescens
