吡嘧磺隆防除水稻移栽田杂草的效果及对养分的影响  

The Weed Control Effects of Pyrazosulfuron and Its Influence on Nutrition in Transplanting Field of Paddy Rice

作　　者：朱文达[1] 陈耕[2] 李平安[2] 李林[1] 

机构地区：[1]湖北省农业科学院植保土肥研究所,武汉430064 [2]四川省西昌市农业局,四川西昌615000

出　　处：《湖北农业科学》2011年第17期3529-3531,共3页Hubei Agricultural Sciences

基　　金：国家"十一五"科技支撑项目(2006BAD08A09)

摘　　要：研究了10%吡嘧磺隆WP防除水稻移栽田主要杂草的效果,以及杂草防除后杂草对氮、磷、钾及水分的影响。结果表明,施用10%吡嘧磺隆WP防除移栽中稻田杂草效果显著,对异型莎草的防效为90.16%～100%,对鸭舌草的防效为89.94%～99.17%,对碎米莎草的防效为91.77%～100%,对稗草的防效为42.20%～60.61%。杂草的防除与田间养分和水分的吸收呈负相关,有效改善了田间的光照和水肥条件,增产效果显著。The weed control effects of 10% pyrazosulfuron WP in transplanting field of paddy rice and subsequent effects of weed on N,P,K and moisture were studied.The results showed that 10% pyrazosulfuron WP had good weed control effects in transplanting field of paddy rice.The weed control effect against cdifformis,Monochoria vaginalis,Cyperus iria and Echinochloa crusgalli was 90.16%～100%,89.94%～99.17%,91.77%～100%,and 42.2%～60.61% respectively.There was a negative correlation between the weed control effects and the absorption of nutrition and moisture.With the increase of weed control effects,the light penetration rate was markedly improved and the weeds absorption of nutrition and moisture was significantly reduced,resulting in prominent effects of yield enhancing.

关 键 词：杂草防效 养分 水分 产量 

分 类 号：S435.11[农业科学—农业昆虫与害虫防治] S482.1[农业科学—植物保护]