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以7个中国品种和7个日本品种为材料,分析施用米糠与杂草和穗颈稻瘟病发生的关系,为水稻有机栽培提供必要的理论依据。结果表明,发生杂草的种类以鸭舌草为主,占杂草种类的78%～99%,稗草的发生量从试验开始占全部杂草的20%,逐渐减少,试验第3年没有发生。穗颈稻瘟病发生,依据年次变化稍有不同,几乎所有年度、所有的品种都是有机栽培区比普通栽培区发病率低。从产量角度考虑,穗颈稻瘟病大量发生的年份,所有品种的平均产量明显降低。
Seven Chinese cultivars and seven Japanese cultivars were used as materials to analyze the relationship between the application of rice bran and weeds and the occurrence of panicle blast in order to provide the necessary theoretical basis for the organic cultivation of rice. The results showed that the species of weeds mainly dominated by Monochamus alternatus, accounted for 78% ~ 99% of the weed species, and the incidence of barnyardgrass decreased from 20% occur. The occurrence of panicle blast occurred slightly differently depending on the number of years. In almost all years, all the cultivars were lower in the organic cultivation area than in the normal cultivation area. From the perspective of yield, the average yield of all varieties significantly decreased in the years when panicle blast occurred in large numbers.