| 六（4）代稻纵卷叶螟对水稻产量的影响及其防治指标研究 |
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| 引用本文： | 刘学儒,吴永方,杨进,秦玉金,丁涛,赵阳,奚本贵. 六（4）代稻纵卷叶螟对水稻产量的影响及其防治指标研究[J]. 安徽农业科学, 2010, 38(15): 7891-7892 |
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| 作者姓名： | 刘学儒 吴永方 杨进 秦玉金 丁涛 赵阳 奚本贵 |
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| 作者单位： | 1. 江苏省扬州市植保植检站,江苏扬州,225000
2. 江苏省仪征市植保植检站,江苏仪征,211400 |
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| 基金项目： | 扬州市自然科学基金项目 |
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| 摘 要： | [目的]为探明田间六（4）代稻纵卷叶螟对扬州地区水稻生产的影响及其防治指标。[方法]通过田间人工控制虫量,设立4个不同虫量梯度,测定不同虫量稻纵卷叶螟为害对武运粳23号（顶部倒1～3叶）卷叶率、产量损失的影响。[结果]在稻纵卷叶螟2龄幼虫0～20头/穴范围内,随着虫量的增加,叶片卷叶率增大、水稻产量下降、水稻产量损失率增高;根据经济允许损失率为3%的计算标准,得出稻纵卷叶螟在武运粳23号上的防治指标为2龄幼虫虫量173头/百穴。[结论]该研究结果为扬州地区六（4）代稻纵卷叶螟的有效控制提供了理论依据。
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| 关 键 词： | 稻纵卷叶螟 卷叶率 产量损失 防治指标 |
Effects of Fourth-generation Cnaphalocrocis medinalis on Rice Yield and Control Index |
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| LIU Xue-ru et al. Effects of Fourth-generation Cnaphalocrocis medinalis on Rice Yield and Control Index[J]. Journal of Anhui Agricultural Sciences, 2010, 38(15): 7891-7892 |
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| Authors: | LIU Xue-ru et al |
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| Affiliation: | LIU Xue-ru et al(Plant Protection & Quarantine Station of Yangzhou,Yangzhou,Jiangsu 225000) |
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| Abstract: | [Objective] The aim was to find out effects of fourth-generation Cnaphalocrocis medinalis on rice production in Yangzhou District and its control index.[Method] Through artificial control of insects in field,4 different insect volume gradients were set,the effects of different Cnaphalocrocis medinalis amounts on leafroll rate and yield loss of Wuyunjing No.23 were determined.[Result] The results showed that within the range of 0-20 head/hole,with increasing of insect amounts,rice yield decreased,leafroll ra... |
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| Keywords: | Cnaphalocrocis medinalis Leafroll rate Yield loss Control index |
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