气候环境对虫害的影响有哪些

• 作 者: 花卉
• 出 处: 农药市场信息
• 发表日期: 2004年19期
• 关键词: 害虫 温度与湿度 气候环境 体内水分 虫害 成活率 湿度 迁飞 生长发育 体温

一、气象因子 1.温度与湿度①温度:一般害虫的生长发育适温为22℃～30℃,温度过高或过低,都会使害虫死亡。一般地说,在适宜的温度范围内,温度增高,害虫取食多,消化快,发育加快,寿命相对缩短;温度低,就会使害虫发育减慢,寿命相对延长。②湿度:湿度不但与害虫体内水分平衡、体温及活动有关,而且直接影响害虫的生长、繁殖。湿度的主要影响表现在害虫数量的消长上,湿度能显著地影响害虫的成活率。

First, the weather factor 1. Temperature and humidity ① temperature: the growth and development of general pest temperature suitable for 22 ℃ ~ 30 ℃, the temperature is too high or too low, will make pests die. In general, in the appropriate temperature range, the temperature increased pests eat more quickly digested and accelerated development, life expectancy is relatively short; low temperature, it will slow the development of pests, life expectancy is relatively longer. Humidity: Humidity is not only related to water balance, body temperature and activity of pests, but also directly affects the growth and reproduction of pests. The main effect of humidity is reflected in the growth and decline in the number of pests, humidity can significantly affect the survival rate of pests.