| 鲜食大豆蚜虫种群增长规律与防治指标 |
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| 引用本文： | 郑永利,姚士桐.鲜食大豆蚜虫种群增长规律与防治指标[J].昆虫知识,2006,43(3):395-397. |
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| 作者姓名： | 郑永利 姚士桐 |
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| 作者单位： | 1. 浙江省植物保护总站,杭州,310020
2. 海宁市植物保护站,浙江,海宁,314400 |
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| 基金项目： | 浙江省重点农业科研项目(2005C22007)。 |
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| 摘 要： | 大豆蚜Aphis glycinesMatsmura种群增长随时间而变化,符合Logistic增长模型,得出回归方程N=58.5330/(1+e4.8704-0.2274t),当t≈21时,可作为防治大豆蚜的关键时期,此时正值田间大豆苗期的营养生长盛期。大豆苗期随着蚜量上升,危害损失增加。根据田间蚜虫密度与危害损失率之间的相互关系,大豆蚜的防治指标可确定为平均每穴蚜量24头或800头/百株。
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| 关 键 词： | 鲜食大豆 大豆蚜 增长规律 防治指标 |
| 收稿时间： | 01 23 2006 12:00AM |
| 修稿时间： | 2006-01-232006-04-03 |
Occurrence regularity and control threshold of Aphis glycines in fresh soybean fields |
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| ZHENG Yong-Li,YAO Shi-Tong.Occurrence regularity and control threshold of Aphis glycines in fresh soybean fields[J].Entomological Knowledge,2006,43(3):395-397. |
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| Authors: | ZHENG Yong-Li YAO Shi-Tong |
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| Institution: | 1. General Station of Plant Protection of Zhefiang Province, Hangzhou 310020, China; 2. Plant Protection Station of Haining County, Haining 314400, China |
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| Abstract: | The occurrence and control threshold of Aphis glycines Matsmura in fresh soybean field were studied through methods of field systematic investigation.The results showed that the population growth of A.glycines accorded with Logistic model,and the relationship between the quantity of A.glycines(N) and the days after emerging of soybean plants(t) was established as N=58.5330/(1 e~(4.8704-0.2274t)).The critical period to control A.glycines should be about 21 days after emerging of soybean plants,when is also the growth period of soybean plants to accumulate nutrients.The model of relationship between percentages of yield loss(Y) and the quantity of A.glycines(X) was established as Y=-2.5141 2.2293X.The control threshold was about 24 individuals per aperture or 800 individuals per 100 plants. |
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| Keywords: | fresh soybean Aphis glycines occurrence regularity control threshold |
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