苏南丘陵区秋播苜蓿苗期杂草化学控制试验  

Study on Chemical Control of Weed in Establishing Alfalfa (Medicago Sativa L.) Fields Seeded in Autumn in South Jiangsu Hilly Area

作　　者：戚志强[1] 胡跃高[1] 曾昭海[1] 傅反生[2] 储国良[2] 

机构地区：[1]中国农业大学农学与生物技术学院草业工程研究中心,北京100094 [2]江苏丘陵地区镇江农科所,江苏句容212000

出　　处：《四川草原》2005年第9期8-11,共4页Journal of Sichuan Grassland

基　　金：农业部农业科技跨越计划项目(2000-22)

摘　　要：为筛选可控制苏南丘陵区一年生黑麦草(Lolium M ultiflorum Lam.)自生苗及恶性越冬杂草并对苜蓿安全的苗后除草剂,将咪草烟3个剂量水平分别与精禾草克、精稳杀得、高效盖草能各4个剂量水平进行混合于冬季施用,并分别从来年春季第一茬杂草发生情况、产量、经济效益等角度分析,得出最佳的两个混用方案:5%咪草烟水剂1.5 L/hm 2+10.8%高效盖草能0.525 L/hm 2和5%咪草烟水剂1.2 L/hm 2+10.8%高效盖草能0.375 L/hm 2。同时分析了在不同咪草烟使用剂量下一年生黑麦草发生与苜蓿产量的相关性。After alfalfa being introduced into South Jiangsu Hilly Area,weeds become one limiting factor to alfalfa growth.To solve this problem, imazethapyr was selected and mixed it with quizalofop-p-ehtyl, haloxyfop-R-methyl and fluazifop-p-butyl respectively, and spreyed to establishing alfalfa fields seeded in autumn.Two mixtures are the best for weeds control：imazethapyr（ 1.5 L/hm^2）＋fluazifop-p-butyl （0.525 L/hm^2）, and imazethapyr（ 1.2 L/hm^2）＋fluazifop-p-butyl （0.375 L/hm^2）. The relativity between alfalfa yield and annual ryegrass volunteer seeding occurance under different dose of imazethapyr has been analyzed.

关 键 词：苜蓿 幼苗田 化学防治 一年生黑麦草 

分 类 号：S54[农业科学—作物学] S451.2