摘要
采用人工接虫的方法,分别于春、秋季进行2次试验,研究西花蓟马虫口密度与叶用莴苣产量损失率之间的关系。线性回归分析结果表明,西花蓟马虫口密度与叶用莴苣产量损失率之间呈显著正相关;大棚种植叶用莴苣,西花蓟马的防治指标为5~6头·株^(-1),即当每株叶用莴苣上西花蓟马虫口数达到5～6头时,叶用莴苣产量显著降低,应及时进行防治。
The relationship between population density of Frankliniella occidentalis and lettuce （Lactuca sativa L. ） yield loss ratio was studied by artificial inoculating method. Two field trials were conducted in spring and autumn, respectively. The results of linear-regression analysis indicated that the correlation between lettuce yield loss ratio and thrips population density was significant positive. Control measures should be taken, when the density of F. occidentalis reached 5-6 per plant, otherwise significant yield loss will be caused.
出处
《中国蔬菜》
北大核心
2016年第11期37-39,共3页
China Vegetables
基金
现代农业产业技术体系北京市叶类蔬菜创新团队建设专项(blvt-15)
关键词
叶用莴苣
西花蓟马
虫口密度
产量损失率
防治指标
Lettuce
Frankliniella occidentalis
Population density
Yield loss ratio
Control index
