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| 稻鸭复合生态系统中二化螟发生规律的研究 | |
| 引用本文： | 刘小燕,杨治平,黄璜,戴振炎,胡立冬,刘大志,丁朝晖. 稻鸭复合生态系统中二化螟发生规律的研究[J]. 湖南师范大学自然科学学报, 2005, 28(1): 70-74 |
| 作者姓名： | 刘小燕 杨治平 黄璜 戴振炎 胡立冬 刘大志 丁朝晖 |
| 作者单位： | 1. 湖南农业大学农学院,中国,长沙,410128;湖南农业大学动物科技学院,中国,长沙,410128 2. 湖南农业大学农学院,中国,长沙,410128 3. 湖南农业大学动物科技学院,中国,长沙,410128 4. 桃江县农业局,中国,桃江,413400 |
| 基金项目： | 国家863项目(863 306 ZD05 3 E)，国家自然科学基金资助项目(39670142)，湖南省科技厅资助项目(NKY2001 01) |
| 摘 要： | 2003年4～10月，在湖南桃江县的稻鸭共栖田中，对二化螟的发生规律进行了研究．结果表明：每公顷放养体重200～400g鸭子300～450只，能使二化螟幼虫的高峰发生期向后推迟9～14d．中稻放鸭区与空白区对照，第二代二化螟幼虫的发生数量减少53．2％～76．8％：放鸭区二化螟为害株率比空白区降低13．4％～47．1％．晚稻第三代二化螟幼虫发生数量放鸭区比空白区减少61．8％，二化螟为害株率降低62．2％． |
| 关 键 词： | 发生规律 复合生态系统 发生数量 2003年 二代二化螟 空白区 稻鸭共栖 桃江县 450 发生期 幼虫 第三代 为害 鸭子 体重 放养 公顷 中稻 晚稻 |
| 文章编号： | 1000-2537(2005)01-0070-05 |
| 修稿时间： | 2004-08-04 |
A Study on Chilo suppressalis''''s Developing Rules in Rice-duck Compounded Ecosystem |
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| LIU Xiao-yan,YANG Zhi-ping,HUANG Huang,DAI Zhen-yan,FU Li-dong,LIU Da-zhi,DING Zhao-hui. A Study on Chilo suppressalis''''s Developing Rules in Rice-duck Compounded Ecosystem[J]. Journal of Natural Science of Hunan Normal University, 2005, 28(1): 70-74 | |
| Authors: | LIU Xiao-yan YANG Zhi-ping HUANG Huang DAI Zhen-yan FU Li-dong LIU Da-zhi DING Zhao-hui |
| Affiliation: | LIU Xiao-yan~ |
| Abstract: | From April to October of 2003,the author made a systemic study on the rule of Chilo suppressalis(walker)'shappening in Rice-Duck commensalism field of Taojiang county,Hunan province.The results showed:in every hectare of rice paddy feeding 300 to,450 ducks,each duck weights from 200 to 400 g,can put off 9 to 14 days for the peak of walker grub's happening.Middle rice duck-fed area compared with blank area,the second generation of chilo suppressalis (walker) grub's happening was reduced by 53.2% to 76.8%;the ratio of damaged individual plant by chilo suppressalis (walker) was lowered by 13.4% to 47.1%.Late rice duck-fed area compared with blank area,the third generation of Chilo suppressalis(walker)grub's happening was reduced by 61.8%,the ratio of damaged individual plant by Chilo suppressalis (walker) was lowered by 62.2%. |
| Keywords: | Rice-Duck commensalisms Chilo suppressalis(walker) ecosystem rule of happening |
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