论文部分内容阅读
病虫害是农作物的大敌,是影响农业高产稳产的主要自然灾害。在农作物生长季节里,病虫害一次又一次危害庄稼,使作物遭受损害,造成减产。一到隆冬季节,就藏匿起来,俟到冬去春来,万物复苏之时,又“卷土重来”,病虫害就是这样年复一年地发生、发展着。 害虫和病原物的生存繁衍都离不开环境条件,它的生长、发育、繁殖、扩散、休眠、滞育等都与环境条件有密切的关系。据研究观察,气象中的大气温度、空气湿度、土壤湿度,对病虫及病原物有较大影响的环境条件。 1 大气温度。昆虫是变温动物,它的体温基本上取决于周围的环境温度。因此
Pests and diseases are the enemy of crops and are the major natural disasters that affect the high and stable agricultural output. In the crop growing season, pests and diseases again and again endanger crops, causing damage to crops and causing a decrease in production. As soon as the winter season, they hid themselves up and went to the spring and winter to come. When things revived, they “came back again and again” and pests and diseases happened and developed year after year. Pests and pathogens are inseparable from the survival and reproduction of environmental conditions, its growth, development, reproduction, proliferation, dormancy, diapause, etc. are closely related with environmental conditions. According to research observations, meteorological atmospheric temperature, air humidity, soil moisture, pests and pathogens have a greater impact on environmental conditions. 1 atmospheric temperature. Insects are warm-blooded animals whose body temperature basically depends on the surrounding ambient temperature. therefore