论文部分内容阅读
蚕豆为镇海县俞范一带主要的春花作物,1963年栽培面积约占当地春花田总面积三分之二左右。蚕豆的前作为棉花或水稻,而以棉花为多。栽培的蚕豆品种大多是“牛踏扁”。蚕豆赤斑病(Botrytis fabae)在当地每年发生都很普遍,有些年份发病很严重,1963年也为发病较重的一年,叶片发病率接近100％,发病程变在Ⅲ—Ⅳ级者达27.84％。枯萎病(Fusa(?)un spp.)在平常年份很少发生,一般只在局郎田块才能找到,发病率仅2～3％左右,而1963年枯萎病发病特别重,每块蚕豆田都发
Broad bean is the main Chunhua crop in Yufan area, Zhenhai County. In 1963, the cultivated area accounted for about two thirds of the total area of Chunhua. Broad beans in front of as cotton or rice, but more cotton. Most cultivated varieties of broad beans are “cattle tread flat.” The annual occurrence of Botrytis fabae in the locality is very common. In some years, the incidence was very serious. In 1963, it was also a year with heavier incidence. The incidence of leaves was nearly 100% 27.84%. Fusarium wilt (Fusa (?) Un spp.) Rarely occur in normal years, usually only in the Bureau Langtai to find the incidence of only about 2 to 3%, while the incidence of wilt disease in 1963 particularly heavy, each broad bean field All hair