48%氟乐灵EC防除新疆地膜棉田杂草效果研究  

Analysison Controlling Weed in Cotton Field Covered by Mulching Film with 48% Trifluralin EC in Xinjiang

作　　者：羌松[1] 魏建华 贾玉华 马东梅 阿依努尔[1] 

机构地区：[1]新疆农业大学农学院,新疆乌鲁木齐830052 [2]昌吉州植保植检站,新疆昌吉832000

出　　处：《新疆农业科学》2006年第B06期194-198,共5页Xinjiang Agricultural Sciences

摘　　要：研究表明，地膜棉田膜内杂草较膜外杂草种群数量多，生长量大，北疆地区早春气温偏低,膜内温度增高的灭草作用有限，除草剂播种前土壤处理是有效控制地膜内杂草的优良措施.地膜棉田播前施用48％氟乐灵EC1125～1687．5mL/hm^2可有效控制狗尾草、稗草、反枝苋、灰藜等杂草，药后第45d对膜内杂草株防效和鲜重防效分别达94．7％～98．6％和93．9％-98．3％，对膜外杂草株防效和鲜重防效分别达78．0％～86.5％和83．7％，对地膜内杂草的防效优于对地膜外杂草的效果。对棉花较为安全。This study shows that there are different amount of weed between area covered by mulching film and area uncovered by mulching film in cotton field, the weed biomass is bigger than in the former. The effect of eliminating weed under mulching film is limited since the temperature is often lower in the early spring in Xinjiang, thus the application of herbicide before sowing is a good option for weed control. The treatment of 48 % trifluralin EC 1 125 -1 687.5 mL/hm^2 before sowing has showed significant effect on controlling Setaria viridis （ L. ） Beauv., Echinochloa crusgali （ L. ） Beauv. var. mitis （ Pursh ） Peterm, Chenopodium album L. and Amaranthus L. with satisfied security. After 45 days, the efficiency of controlling weed under mulching film reached 94.7% -98.6% and 93.9% -98.3%,respectively; whereas 78.0%-86.5% and 83.7% in uncovered area, respectively. The control effect is greater under mulching film covered area than that under uncovered area.

关 键 词：除草剂 氟乐灵 地膜棉田 杂草防治 

分 类 号：S45[农业科学—植物保护]