摘要
针对商州刘塬沟村桑木虱为害日趋严重的情况,2009～2011年连续3年对刘塬村的4个桑园桑木虱的发生情况进行了定点研究。结果发现:桑木虱单叶虫口密度和为害程度连续两年均呈快速上升趋势,最高分别上升了22.975倍和3.069倍,发展迅速。桑木虱已成为商州区部分桑园和桑蚕业发展的主要阻碍因子。
Mulberry sucker is becoming more and more severe since it has continued for three years in Liuyuangou from 2009 to 2011.The observation found that the density of the pest per leaf and damage caused have increased quickly in last two years,about 22.975 times and 3.069 times respectively.
出处
《陕西林业科技》
2012年第5期108-110,共3页
Shaanxi Forest Science and Technology
基金
陕西省教育厅资助项目(07JK238)
关键词
桑木虱
调查
虫口密度
为害
Mulberry sucker
investigation
insect density
damage caused
