河南农业科学2012，Vol.41Issue(4)：45-48,53,5.
黄淮海夏大豆“症青”现象发生原因初步探讨
Tentative Analysis of "Zhengqing" Phenomena of Soybean in the Huanghuai Valleys
摘要
Abstract
The "Zhengqing" phenomena of soybean have become more and more serious in the Huanghuai Valleys in recent years. By adopting the method of split plot designs, this research studied the effects on the "Zhengqing" phenomena of different varieties of soybean under the boric acid spray or beta-cypermethrin spray. The result showed that different varieties of soybeans,despite their same sowing time,showed different degrees of seriousness of the "Zhengqing" disease. Compared with the control group,when 6 - 7 leaves of the plant came out,by continually spraying 1 000 times solution of 5% beta-cypermethrin as much as 5 times once a week,the frequency of the "Zhengqing" phenomena (0. 3%) and the percentage of useless pods (10. 81%) reduced by 22. 2,25. 9 percentage points respectively,and the relative production per plant was 2. 53 times as much as the control group; the frequency of the "Zhengqing" phenomena (20. 0%) and the percentage of useless pods (31. 44%) of soybean under spraying boric acid reduced by 2. 5,5. 27 percentage points respectively,and the relative production per plant raised up to 1. 26 times. In addition, different varieties of soybeans had different responses to the boric acid spray. Zhoudou 19 showed an increased trend in the rate of useless pods as well as the "Zhengqing" phenomena, while the others showed an increase of individual production. The results indicated that the "Zhengqing" phenomena are mainly a result of pests. However, further researches are needed to analyze the variety of pests and the regularity of outbreak.关键词
大豆/症青/虫害/发生原因Key words
soybean/ "Zhengqing" phenomena/ insect pests/ reason of outbreak分类
农业科技引用本文复制引用
郭建秋,马雯,雷全奎,杨小兰,李月霞..黄淮海夏大豆“症青”现象发生原因初步探讨[J].河南农业科学,2012,41(4):45-48,53,5.基金项目
洛阳农林科学院院长基金项目 （）
