论文部分内容阅读
我县地处江汉平原,常年种植油菜面积近8万亩,但单产较低(120斤左右),其主要原因是菌核病的为害。历年来,我县油菜菌核病的发病株率是40—60％,严重田在85％以上,产量损失2—4成,严重田损失一半以上。特别是在春季多雨年份和施肥水平偏高的情况下,为害更重,严重阻碍了油菜的高产稳产。为此,我们采用了综合防治,并配合根外喷硼加强栽培管理,使我县油菜单产连续三年(1982—1984)年取得亩产198斤、218斤和229斤的好收成。
My county is located in the Jianghan Plain, perennial planting rapeseed area of nearly 80000 acres, but yields are low (120 pounds), the main reason is the scab damage. Over the years, our county rape sclerotinia incidence rate of 40-60%, more than 85% of serious fields, the yield loss of 2-4, serious field loss of more than half. Especially in the spring rainy years and high fertilization levels, the more serious damage, a serious impediment to the high and stable yield of rapeseed. To this end, we adopted a comprehensive prevention and control and with the root out of boron to strengthen cultivation and management, so that our county rapeseed yield for three consecutive years (1982-1984) to obtain 198 kg per mu, 218 kg and 229 kg of good harvest.