环境因子对储粮害虫影响的研究进展

RESEARCH ADVANCE OF ENVIRONMENTAL FACTORS ON STORED GRAIN INSECTS

影响储粮害虫生长发育、繁殖及种群动态的环境因子包括温度、湿度、气体、食物、生物及人为因子 ,储粮害虫对环境的要求因虫种而异。描述温度与储粮害虫发育速率之间关系可采用逻辑斯谛模型、王—兰—丁模型及生物物理模型。除影响发育速率外 ,温度对储粮害虫繁殖、存活及地理分布也有明显影响。湿度与温度相互作用共同影响储粮害虫发育和繁殖 ,适宜的湿度范围常随温度的变化而转移。气调对储粮害虫的影响已成为近二十年来的研究热点 ,气调配合熏蒸可有效提高熏蒸剂杀虫效果。食性特化是对食物长期适应的结果 ,不同虫种对食料有一定要求。影响储粮害虫的生物因素包括捕食者、寄生者及病原微生物等。研究储粮害虫生物学和生态学特性 。

Environmental factors,which affect the developmental rate,reproduction and survivorship,include temperature,humidity,gas,food,biotic factors and human beings.The environmental demands are based on distinct species.The relationships between developmental rates and temperatures can be fitted by Logistic,Wang-lan-Ding and Biophysical models.Humidity interacting with temperature affects biology of stored grain insects.Optimum humidity for stored grain insect changes with temperature.Controlled atmosphere(CA) becomes the research hotspot during the recent 20 years.CA with fumigant can increase the efficacy of fumigants.Food preference is the results of long-term evolution.Biotic factors include parasite,predator and microorganism.The purpose to research into the relationship between environmental factors and stored grain insect pests is to provide technological backup for controlling the pest population system.