摘要
研究结果表明 ,美洲斑潜蝇危害四季豆时 ,虫情指数与产量损失率之间有极显著正相关 ,其直线回归方程为 Y=0 .7399+ 1.0 185 X,r =0 .9980 * * 。防治指标 :当虫情指数为 9.5 0 4～ 19.72 5时 ,必须用药防治 ,控制其为害。
The study result showed that the correlation between pest damage index and yield loss ratio was significantly positive when snap bean was damaged by Liriomyza sativae Blanchard, with the linear regression equation of Y=0.7399+1.0185X, r=0.9980 ** . The pest had to be controlled by pesticide when the pest damage index was up to 9.504-19.725.
出处
《华东昆虫学报》
2001年第2期63-65,共3页
Entomological Journal of East China
关键词
美洲斑潜蝇
危害损失
防治指标
四季豆
Liriomyza sativae Blanchard
damage loss
control threshold
