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三江县位于桂北高寒山区,是柳州地区稻瘟病流行的主要地区。除位于南部、地势较平缓的丹洲公社外,其余十个公社都普遍发生。该地苗瘟、叶瘟、节瘟、穗颈瘟都有,而以穗颈瘟影响产量尤重。研究三江县稻瘟病的流行规律,具有普遍意义。 稻瘟病的流行,牵涉到品种、气候、肥料等多个因子,虽然这些因子各有其特定的影响,但是,气候因子却是病害流行的必要条件。M·MQgk(1973)曾在植物病害流行学的研究中,说明了气候因子在病害流行中的重要的作用。基于这样的思想,我们调
Sanjiang County is located in the alpine mountains in northern Guangxi, is the main area of the blast in Liuzhou. Except for the Danzhou commune, which is located in the south and has a relatively flat terrain, the other 10 communes are common. The seedling blast, leaf blast, section blast, paniculaceae have, and panicle blast yield particularly affected. Studying the epidemic law of rice blast in Sanjiang County is of universal significance. The prevalence of rice blast involves many factors such as variety, climate and fertilizer. Although each of these factors has its own specific influence, the climate factor is a necessary condition for the epidemic. M · MQgk (1973) studied the epidemiology of plant diseases and explained the important role of climatic factors in the epidemic. Based on this idea, we tune