论文部分内容阅读
影响病虫害分布的因素任何农作物的病菌和害虫,都需要一定的气象条件(主要是温度、湿度和降水),才能正常生长、发育。气象条件适宜,病虫害的发生、发展就可能猖獗;反之,就会受到抑制。我们常常看到,某些病虫害,在某些地区发生很严重,在其他地区发生就很轻,甚至根本不发生。换句话说,病虫害的分布是有地区性的。当然,造成这个现象的原因很多,但气象条件常常是主要原因之一。我国各地气候条件差异很大。
Factors Affecting the Distribution of Diseases and Insects The pathogens and pests of any crop need certain meteorological conditions (mainly temperature, humidity, and precipitation) in order to grow and develop normally. Meteorological conditions are appropriate, and the occurrence and development of pests and diseases may be paralyzed; otherwise, they will be suppressed. We often see that some diseases and pests are very serious in some areas, and they are very light in other areas and do not even occur at all. In other words, the distribution of pests and diseases is regional. Of course, there are many reasons for this phenomenon, but meteorological conditions are often one of the main reasons. The climate conditions in various parts of China vary greatly.