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直播稻田千金子发生规律及防除技术研究
引用本文:吴长兴,王强,赵学平,戴芬,冯克强,蔡国良,陈斌.直播稻田千金子发生规律及防除技术研究[J].浙江农业学报,2000,12(6):335-337.
作者姓名:吴长兴  王强  赵学平  戴芬  冯克强  蔡国良  陈斌
作者单位:1. 浙江省农业科学院植物保护研究所,浙江 杭州 310021
2. 嘉兴市农业科学院,浙江 嘉兴 314016
3. 诸暨市农业技术推广中心,浙江 诸暨 311800
4. 诸暨市城关镇政府城西办事处,浙江 诸暨 311800
基金项目:浙江省"九五"重大科技项目(961102242)
摘    要:对千金子在直播稻田的发生高峰及叶片生长速度进行了观察,并对化学除草及水控除草的效果作了研究。结果表明,千金子在直播田只有一个发生高峰期,单季晚稻直播田和连作晚稻直播田发生高峰期在播后1周,早稻直播田发生高峰期在播后2周。千金子的叶片生长速度较水稻秧苗快1叶左右,其生长量前期较小,后期较大。扫弗特、千金、威霸、去稗安和拜田净对千金子防除效果均达92.2%以上,适宜的水管理也可以有效防除千金子。

关 键 词:千金子  发生高峰  化学除草  直播稻田  杂草
文章编号:1004-1524(2000)06-0335-03
修稿时间:2000年8月2日

Occurrence of Chinese sprangletop, Leptochloa chinensis (L.) Nees, ani its control in direct seeded rice fields
WU Chang-xing,WANG Qiang,ZHAO Xue-ping,DAI Fen,FENGKe-qiang,CAI Guo-liang,CHEN Bin.Occurrence of Chinese sprangletop, Leptochloa chinensis (L.) Nees, ani its control in direct seeded rice fields[J].Acta Agriculturae Zhejiangensis,2000,12(6):335-337.
Authors:WU Chang-xing  WANG Qiang  ZHAO Xue-ping  DAI Fen  FENGKe-qiang  CAI Guo-liang  CHEN Bin
Abstract:Germination and growth of Chinese sprangletop, Leptochloa chinensis ( L. ) Nees, were observed in fields of direct seeded rice,and effect of herbicides and water management on the weed assesed.It showed that Chinese sprangletop germinates to have an emergence peak at 1 week after rice seeded in one season late rice and two season late rice or 2 weeks in early rice. The weed grows quicklier than rice by about 1 leaf, and the weed plant is much bigger at late stage than at early stage. While Sofit ( pretilachlor + fenclorim), Clincher (Clincher, cyhalofop), Whip (Whip, fenoxaprop-p-ethyl), MY-100 (oxaziclomefone) and YRC-2388 (fentrazamide) are highly effective on the weed. Water management may also control it.
Keywords:Chinese sprangletop (Leptochloa chinensis)  direct seeded rice  emergence peak  leaf stage  herbi-cide  water management
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