摘要
为探明温湿度对菜青虫幼虫发育历期及食叶量的影响，制订出合适的菜青虫经济阈值，利用计算机扫描技术，测定了不同温湿度组合下菜青虫幼虫的发育历期、总食叶面积和日平均食叶速率．结果显示，在试验温度范围内，随温度升高，菜青虫幼虫发育历期缩短，全幼虫期总食叶面积下降，日平均食叶速率增大；相对湿度对菜青虫幼虫发育历期和日平均食叶速率的影响不大。
Based on the techniques of scanner, the leaf consumption and development duration of larvae of Pieris rapae at various temperature humidity regime were measured. The results showed that: (1) Within the experimental temperature,the development duration and leaf consumption of the insect decreased and the leaf consumption rate increased with the increase of temperature.(2) The influence of humidity on the development duration and leaf consumption rate of the insect was not remarkable,but the negative correlation between humidity and leaf consumption rate was marked.
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
1999年第2期133-136,共4页
Journal of Hunan Agricultural University(Natural Sciences)
基金
澳大利亚国际农业研究中心资助项目
关键词
菜青虫
温度
湿度
发育历期
食叶量
Pieris rapae temperature humidity development duration leaf consumption
