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近几年来,我国棉花黄萎病蔓延迅速,造成损失严重。为明确该病发生流行的特点和影响发病的因素,于1982、1983两年进行了田间黄萎病消长规律的观察试验。 试验方法 定株观察 了解自然条件下黄萎病在棉花整个生育期中发生发展的规律。试验分别于河南新乡王屯基点和北京黄萎病圃进行,棉花品种为86—1号和徐州142。棉花发病前,选行逐株定200棵,编号挂牌,从6月中旬开始到9月中旬止,每隔10天调查一次。两年定点观察4个点次。
In recent years, the rapid spread of cotton wilt in China has caused serious losses. In order to clarify the epidemic characteristics of the disease and the factors that affect the incidence, field experiments on the growth and decline of Verticillium wilt were conducted in 1982 and 1983 respectively. Test methods Strain observed to understand the natural conditions Verticillium wilt occurs throughout the growth of cotton in the law. The experiment was carried out in Wangtunji, Xinxiang, Henan Province and Beijing Verticillium dahliae nursery, respectively. The cotton varieties were 86-1 and Xuzhou 142. Before the onset of cotton, the selected line of 200 strains per plant, number listed, from mid-June until mid-September only once every 10 days investigation. Two-year fixed-point observation 4 points.