连作晚稻秧田播后药剂除草试验  

Studies on Weed Control with Herbicides in Double Cropping Late Rice Nursery after Sowing

作　　者：赵敏 

机构地区：[1]浙江省桐庐县农业局植保站

出　　处：《农药》1996年第7期34-36,共3页Agrochemicals

摘　　要：１９９０、１９９４年，在连晚秧田进行了播后药剂除草试验。结果表明：播后２天，应用１７．２％哌草丹－苄嘧黄隆每公顷３０００克，３０％丙草胺每公顷１１２５～１５００毫升防除秧田杂草效果好，且杀草谱宽，总草株防效分别为９６．３％、９１．１～９５．５％，鲜重防效为９８．４％，９１．５～９５．９％。播后用１０％苄嘧黄隆每公顷１８０克，秧苗２叶后再用５０％二氯喹啉酸每公顷３７５克，除草效果也较好。总草株防效为９３．６％，鲜重防效为９６．３％。而播后５～８天用６０％丁草胺乳油每公顷１５００毫升，仅除稗效果较好，株防效为８５．７～１００％，鲜重防效为５７．１～１００％。In 1990 and 1994, field trials on weeds control of herbicides in the late rice seedling bed was carried out. The results showed that treated with 17. 2% mixture of dimepierate and bensulfuron methyl WP 3kg/ha or 30% pretilachor EC 1125 ￣ 1500 ml/ha, the plants of weeds were reduced by 96. 3% and 91.1￣95%, the fresh weight of weeds was reduced by 98. 4% and 91.5 ￣95. 9%,respectively. The test also demonstrated that 10% bensulfuron WP 180g/ha in 2 days after sowing followed 50% quinclorac WP 375g/ha applied at 2-leaf stage of rice weed plants of 93. 6% and weed fresh weight of 96. 3% were reduced respectively. All treatments were safe to rice.

关 键 词：除草剂 安全性 稻田 除草试验 连作 晚稻 

分 类 号：S451.21[农业科学—植物保护]