棉花苗期病害的防治
文献类型: 中文期刊
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期刊名称:中国农业科学
ISSN: 0578-1752
年卷期: 1958 年 04 期
页码: 221
收录情况: 北大核心
摘要: 棉花苗期病害种类很多,主要分为种子传病及土壤傅病的两种类型。由种子傅病的,如炭疽病、角斑病、茎枯病、红腐病等,由土壤传病的,如立枯病、、红腐病、猝倒病等,其中为害根部的为立枯、红腐、猝倒、炭疽,常造成大片死苗是苗病中主要的为害种类,也就是苗病防治的主要对象。为害叶部的则为角斑病、茎枯病、轮纹斑病、褐斑病等,发病较迟,为害亦较轻。病害的种类常因地区分布而不同,且在同一地区亦可因逐年气象环境的不同而种类有改变。各种类分
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