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1969年,水稻普通矮缩病伴黄矮病在我省局部地区造成严重的危害,1970—1971年,各地普遍遭受此病危害,1973年以后,危害程度减轻。目前杂交水稻种植面积迅速扩大,此病有加重的可能。因此,探明此病的发生流行规律,从中找出预测依据,对生产有现实意义。由于黑尾叶蝉传播普矮和黄矮病毒,因此,黑尾叶蝉的发生数量及带毒率与病害发生的关系,历来为人们所重视。河野1966年曾叙述他强烈地感到带毒率对病害流行的作用,木村1976年也有类似的报导;而原等在1969年、中房在1970年的文章中则认为带毒虫率与传病的株率无关,与普矮发病率有关的是黑尾叶蝉的虫口密度。1970年以来,我们在这方面作了一些调查和试验,初步认
In 1969, the common dwarf disease of rice with yellow dwarf disease caused serious harm in some areas in our province. From 1970 to 1971, the disease was generally endangered everywhere and after 1973, the degree of harm was alleviated. At present, the area under which hybrid rice is planted has rapidly expanded and the disease may aggravate. Therefore, to find out the epidemic law of the occurrence of the disease, find out the basis for prediction and have practical significance to the production. Due to the propagation of Puti and Aconitum dysentery, the occurrence and distribution of Nephotettix cincticeps have always been valued by people. Kawano once described in 1966 that he strongly felt the effect of the lethality rate on the disease epidemic, and Kimura made a similar report in 1976; whereas, in 1969, Mr. Nakasu claimed in 1970 that the rate of entomology and transmission Strain rate has nothing to do, and general short incidence is related to the black-leafhopper insect population density. Since 1970, we have done some investigations and experiments in this regard, and have tentatively confirmed this