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.%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.
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