直播稻田恶性杂草千金子的发生与防治技术探讨  

Study on the Occurrences and Control Techniques of Moleplant Seed in Direct Sowing Rice Field

作　　者：张学友[1] 陈小波[1] 陈惠祥[1] 沈俊明[1] 葛红[1] 

机构地区：[1]江苏沿江地区农业科学研究所,江苏如皋226541

出　　处：《湖北农学院学报》2001年第4期293-296,共4页Journal of Hubei Agricultural College

基　　金：江苏省"九五"重大攻关资助项目 (BJ96 5 14- 1)

摘　　要：千金子 [Leptochloachinensis(L .)Nees]具有极强的分蘖和繁殖能力 ,已经成为直播稻田主要恶性杂草之一 ,对直播稻影响巨大。 1 998～ 2 0 0 0年试验 ,每平方米有 0 .5株千金子时 ,产量损失 5 1 .2 0 % ;在稻苗 3叶期 ,每公顷使用千金 75 0mL ,加苄黄隆 2 2 5～ 30 0g ,对千金子防治效果可稳定在 95 %以上 ,并可兼治莎草、水苋等直播稻田主要杂草。Leptochloa chinensis (L.) Nees with excellent ability of tiller and reproduction, had become one of pernicious weeds in direct sowing rice field, and hurt the direct sowing rice seriously. The occurrences and control techniques of Leptochloa chinensis were studied in 1998～2000. The results showed that when there was moletplant seed 0.5·m -2 in direct sowing rice field, the rice yield lost 51 20%. Application of the mixture of Clincher(750 mL ·hm -2 )and Bensulfuron(225～300 g·hm -2 ) at the stage of 3 leaf of rice plants was safe for rice and the percentage of control to moleplant seed could reach over 95%, and could control nutgrass and ammannia etc. at the same time.

关 键 词：直播稻田 千金子 除草效果 恶性杂草 防治 

分 类 号：S451.21[农业科学—植物保护]