刘宾 王海莲 管延安 杨延兵 秦岭 陈二影 王润丰 张华文
摘要:本试验研究9种化学除草剂对‘济粱1号播后苗前和苗后田间杂草防效、产量等性状的影响,筛选出既能有效防除杂草又能保证‘济粱1号正常生长的除草剂。即:苗前单一除草剂50% 异甲·莠去津悬乳剂 200 mL(666.7m2用量,下同)和33% 二甲戊灵 150 mL封闭喷雾,苗后5—6叶期喷施单一除草剂75% 氯吡嘧磺隆 8 g和复配除草剂(56% 二甲四氯27 mL+50% 二氯喹啉酸10 g+38% 莠去津79 mL+75% 氯吡嘧磺隆2 g)均可用于高粱杂交种‘济粱1号的杂草防治。
关键词:高粱;除草剂;杂草防效;产量
中图分类号:S482.4文献标识号:A文章编号:1001-4942(2018)04-0108-04
Abstract In order to screen out the herbicides which had efficient weed control effects and could ensure the normal growth of Jiliang 1,the weed control effect and yield under 9 kinds of herbicide treatments were researched in the experiment before and after emergence. The results showed that before emergence, the 200 mL of 50% ISO-propylene compound atrazine and 150 mL of 33% pendimethalin per 666.7m2 could be single used for closed spray, which were safe for the weed control of sorghum hybrid Jiliang 1. At the 5-6 leaf stage after emergence, 8 g of 75% halosulfuron-methyl and compound herbicide(27 mL of 56% MCPA+10 g of 50% quinclorac+79 mL of 38% atrazine+2 g of 75% halosulfuron-methyl) per 666.7m2 could be used for the weed control of Jiliang 1.
Keywords Sorghum; Herbicide; Weed control effect; Yield
山东省是我国农业大省,农业生态类型丰富,黄河三角洲地区存在大面积盐碱地。高粱具有耐盐碱、抗旱、耐涝、耐瘠薄等多重抗逆性,在盐碱度0.3%~0.6%的土地上仍能较好的生长发育。因此,在黄河三角洲地区种植高粱,对提高我国盐碱地区农村经济效益、增加农民收入具有不可低估的作用。高粱田杂草发生普遍、种类繁多,杂草凭其自身特有的生长竞争能力与高粱争夺阳光、养分、水分和生长空间,这严重影响高粱正常生长,并导致产量和品质下降[1,2]。20 世纪80 年代,随着农业现代化发展和农业劳动力的逐步转移,我国栽培耕作方式趋向规模化、机械化和集约化,对除草剂的需求量显著增加[3]。高粱在使用除草剂时容易出现药害[4-7],可应用于高粱杂草防除的除草剂种类较少,致使高粱生产中严重依赖人工防除杂草,提高了生产成本、限制了高粱产业化规模化种植。……