摘要
玉米铁甲虫是广西西部和西南部地区玉米的主要害虫 ,单株玉米每增加 1粒卵 ,产量损失率为0 .2 62 %。在 3 75 0～ 45 0 0 kg/hm2生产水平下的防治指标为 2 0～ 2 5粒卵 /株。
The corn beetle Dactylispa setifera is a serious pest on corn in west and southwest area in Guangxi The lose rate caused by the beetle increased with the amount of eggs on the individual plant An egg of the beetle laid on the plant would cause 0 262% lose rate of the yield Under the productive level of 3 750～4 500 kg/hm 2, the threshold of economic injury caused by the beetle would be 20～25 eggs per individual plant
出处
《广西农业生物科学》
CAS
CSCD
2003年第1期29-31,共3页
Journal of Guangxi Agricultural and Biological Science
基金
广西大学科研基金资助项目
关键词
玉米铁甲虫
玉米
防治指标
损失率
Dactylispa setifera
corn
economic threshold
lose rate
