近两年,笔者用75%氯吡嘧磺隆水分散粒剂在大棚番茄田进行药效试验,结果表明该药对阔叶杂草和莎草有较好防效。试验番茄品种为苏粉8号,田间阔叶杂草和莎草主要有铁苋菜、凹头苋、香附子。75%氯吡嘧磺隆水分散粒剂设4个处理,每亩用量分别为4克、6克、8克、12克,以每亩用960克/升精异丙甲草胺乳油70毫升为对照药剂处理,均在番茄移栽前1天进行土壤封闭处理。另设空白对照。施药后观察,氯吡嘧磺隆对凹头苋、铁苋菜、香附子抑制作用明显,用药后3~5天杂草根、芽明显受抑,初 The past two years, the author with 75% of pyrimethazone water dispersible granules in the greenhouse effect test, the results show that the drug on broad-leaved weeds and sedge better control effect. Test varieties of tomato powder for the Soviet Union 8, field broadleaf weeds and sedge mainly iron amaranth, Auranthus rex, Cyperus rotundus. 75% of the pyrimethazone water dispersible granules set 4 treatment, the amount of acre per acre were 4 grams, 6 grams, 8 grams, 12 grams, with 960 grams per liter of sophorolamine EC 70 ml For the control agent treatment, all soil was closed one day before tomato transplanting. Another set of blank control. Observed after spraying, clopyrazosulfuron on Amaranthus reticulata, iron amaranth, incense monkshood significantly inhibited 3 to 5 days after treatment weeds roots and buds were significantly inhibited, early