摘要
大田系统调查结果表明：大豆蚜虫为害高峰期为大豆分枝开花期，百株蚜量高达１８８１５头，造成大豆植株卷叶矮化率２０％。大豆蚜虫的天敌共１５种，其高峰期数量为４３１头／百株；大豆蚜虫优势天敌主要有龟纹瓢虫（Ｐｒｏｐｙｌｏｅａｊａｐｏｎｉａ）、长扁食蚜蝇（Ｓｐｈｏｅｒｏｐｈｏｒｉａｓｐ．）、草间小黑蛛（Ｅｒｉｇｏｎｉｄｉａｍｇｒａｍｉｎｃｏｌｕｍ）、菜蚜茧峰（Ｄｉａｅｒｅｔｉｅｌａｒａｐａｅ）、黑襟毛瓢（Ｓｃｇｍｎｕｓｈｏｆｆｍａｈｎｉ）５种。大豆蚜虫天敌消长曲线与大豆蚜虫消长曲线相似。
It was showed from syotematic investigation and analyses in fields that the height period of Aphis glycines' harm was the florescence of soybean,the quantity of Aphis glycines reached 18815 heads per hundred plants and the dwarf rate of soybean plants was 20%, the main natural enemies had 15 kinds, the quantity of natural enemies was 431 heads per hundred plants during peak period, the main superior natural enemies had 5 kinds,such as Propyloea japonia, Sphoerophoria sp, Erigonidium gramincolum, Diaeretiella rapae and Scymnus hoffmanni.The curve of natural enemies' decline growth was similar to Aphis glycines',only their curve postpoing from 5 to 7 days.
出处
《湖北农业科学》
1997年第2期22-24,共3页
Hubei Agricultural Sciences
关键词
大豆
蚜虫
天敌
消长规律
Aphis glycines,soybean, natural enemy,decline growth law.
