水稻品种对稻瘟病菌抗病品种性的强弱,一般有三种类型:抗病品种,感病品种,和介于上述两者之间的品种。凡水稻体内含有可溶性物质(如氨态氮一类物质)较少,而钾素含量较高的、或表皮细胞组织中特别是机动细胞的硅化程度高的,都不利于稻瘟病菌丝的侵入,表现高度抗病性。因此,这一类水稻对稻瘟病的抵抗力就强。但与此相反,如水稻体内渗出物含有丰富的氨态氮或机动细胞内硅酸的含量极少时,水稻茎叶嫩绿,组织幼嫩,有利于稻瘟病菌丝的 There are generally three types of rice cultivars that are susceptible to the disease-resistant variety Magnaporthe oryzae: resistant varieties, susceptible varieties, and varieties in between. Where rice contains less soluble substances (such as ammonia nitrogen), potassium content is higher, or epidermal cell tissue especially the high degree of silicification of motorized cells are not conducive to the invasion of the mycelium of Magnaporthe grisea , Showing a high degree of disease resistance. Therefore, this type of rice is more resistant to rice blast. On the contrary, if the exudates in rice contain abundant ammonia nitrogen or the content of silicic acid in motor cells is very low, the stems and leaves of rice are tender and the tissues are young, which is good for mycelium growth of Magnaporthe grisea