棉花苗期主要棉虫的防治技术
文献类型: 中文期刊
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作者机构:
期刊名称:中国农业科学
ISSN: 0578-1752
年卷期: 1958 年 04 期
页码: 218
收录情况: 北大核心
摘要: 棉苗期有下列四种主要棉虫:棉蚜、棉红蜘蛛、小地老虎和蓟马。在黄河以北棉区内,常年遭受蚜害的棉田达80%以上,无论旱地或灌溉棉田,经常出现严重卷叶,幼苗停滞生长的灾害。棉红蜘蛛发生面积在8—12%之间,干旱年份也极易造成严重灾害。小地老虎和蓟马多集中为害地势比较低湿、杂草多的棉田,造成缺苗断拢现象。以上四种棉虫,常先后混杂发生,必需进行综合防治,才能达到保苗目的。
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