论文部分内容阅读
根据多年试验,具备充足的菌源只是导致发病的重要条件;能否发病和发病程度如何,主要取决于播种时期和播种至出苗的情况。1979年我们在杨柳公社小王家三户自留地调查,同用王景礼一家的7023麦种,由于播期不同,其发病程度悬殊很大。(1)10月30日以前播种的各品种,腥黑穗病均表现为轻发或不发。(2)10月30日至12月15日播种的各处理,发病最重。
According to many years of experiments, having sufficient fungus source is only an important condition leading to the disease; whether or not the disease can be affected and the degree of the disease depends on the time of planting and the situation of sowing to emergence. In 1979, we surveyed three privately-owned small willow houses in Yangliu Commune, using 7023 wheat seeds of the same family as Wang Jingli. Due to different sowing date, the disease disparity is very large. (1) All varieties sown before Oct. 30 showed no or no effect on the smut. (2) The treatments of the seeding from October 30 to December 15 were the most serious.