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作 者 ：王玉正,任宝珍,刘汉舒,杨清臣,罗守玉,魏靖,朱军生

期 刊 ：生态学报 2001年 21卷 2期 页码：271~278

关键词：水稻；病虫害；可控因素；综合效应；系统最优控制；

Keywords:rice, diseases and insect pests, controllable factor, integrative effect, system optimum control,

摘 要 ：1994～ 1 996年研究了稻田 1 3种可控因素对水稻病虫害、天敌和产量的综合效应以及分期混合施药技术。根据既控制病虫增产又保护生态的原则 ,综合评价了可控因素 ,提出了水稻病虫害系统最优控制为中国 91或辐 4 -2 ,N 1 50 kg/hm2 ,底肥 :分蘖肥 :穗肥 N分配比为 80∶ 0∶ 2 0 ,P2 O575kg/ hm2 ,K2 O 2 4 0 kg/ hm2 ,Zn SO4 1 5kg/ hm2 ,插秧期春季稻和夏季稻分别 4月 30日和 6月 1 5日前后 ,种植密度为 36万墩 / hm2 ,水管理为适时标准烤田 ,播种期甲基异柳磷 0 .0 8%与多菌灵 0 .1 5%混合浸种防治地下害虫和恶苗病 ,分蘖初期 ( 7月 2 5日前后 )杀虫双 750 g/ hm2 与井冈霉素 1 50 g/ hm2 × 2混合喷雾防治二代稻纵卷叶螟和纹枯病 ,分蘖后期 ( 8月 2 0日前后 )捕虱灵 75g/ hm2 与三环唑 30 0 g/ hm2 混合喷雾防治稻飞虱和稻瘟病。

Abstract:The integrative effect of 13 controllable factors of rice fields on diseases and insect pests, natural enemies and rice yield, and technology of mixture of insecticides and fungicides to control main diseases and insect pests of rice at three periods were studied from 1994 to 1996. We intended to act on the criterion of not only good result of control to the pests and increase of rice yield but also protection of natural enemies, the 13 controllable factors were evaluated synthetically and the opt...

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