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近年来,由于种植高产水稻品种和过量施用氮肥,很多稻区由于水稻纹枯病而导致大幅度减产,产量损失在5.2％-50％之间。早期有人报道用甲基托布津和有效霉素(稻纹散)能有效地防治水稻纹枯病,但有效霉素在市场上不易买到,因此本研究则是要找到在田间条件下能有效地防治水稻纹枯病而且在市场上可以随便买到的大菌剂种类。水稻品种CR1009于30天菌龄时移裁到5.0×4.0米的小区中(田间施肥量为每公顷N_(100),P_(50),K_(50)公斤)随机区组,四次重复,于水稻分蘖期接种纹枯病菌。接种后喷水保湿以利发病。接菌后第3天施第一次杀菌剂,间隔10—12天施第二次杀菌剂,每小区随机选20丛水稻,按照国际水稻研究
In recent years, due to planting high-yielding rice varieties and over-fertilization of nitrogenous fertilizer, many rice-producing areas have greatly reduced production due to sheath blight of rice, with yield loss between 5.2% and 50%. Earlier it was reported that the use of thiophanate-methyl and validamycin (rice grain powder dispersal) was effective in controlling rice sheath blight, but validomycin was not readily available in the market, so this study sought to find effective treatments that were effective under field conditions To prevent and control rice sheath blight and can easily buy in the market of mycotoxin species. Rice cultivars CR1009 were randomly assigned to 5.0 × 4.0 m plots (N_ (100), P_ (50) and K_ (50) Kg per hectare) at the age of 30 days. Rhizoctonia solani was inoculated at tillering stage of rice. After inoculation water spray moisturizing disease. The first fungicide was applied on the third day after inoculation and the second fungicide was applied at intervals of 10-12 days. Twenty rice plants were randomly selected in each plot. According to the International Rice Research