三硅氧烷助剂对40%2甲·辛酰溴乳油的增效及降低用药量和用水量的作用  

Synergism,Reducing Dosage and Water Consumption of Trisiloxane on MCPA-Isooctyl·Bromoxynil Octanoate 40% EC

作　　者：余海涛[1] 牛树君[1] 刘敏艳[1] 胡冠芳[1] 李玉奇[1] 

机构地区：[1]甘肃省农业科学院植物保护研究所,甘肃兰州730070

出　　处：《甘肃农业科技》2012年第6期14-16,共3页Gansu Agricultural Science and Technology

基　　金：现代农业产业体系建设专项资金(CARS-17-GW-7)部分内容

摘　　要：在不同剂量的40%2甲.辛酰溴乳油中添加相同剂量的三硅氧烷助剂和水,配成不同浓度的药液,喷雾处理后观察其对胡麻田杂草的防除效果,结果表明,40%2甲.辛酰溴乳油1 500 mL/hm2对水675 kg/hm2,加入225 g三硅氧烷助剂,药后45 d对胡麻田一年生阔叶杂草的株防效和鲜重防效均为100%,较不加三硅氧烷助剂分别提高6.38和4.88百分点。用药量1 200、1 275 mL/hm2,对水675 kg/hm2,加入225 g三硅氧烷助剂,对阔叶杂草的株防效和鲜重防效均达92%以上,较不加三硅氧烷助剂降低15%～20%的用药量。在1 500 mL/hm240%2甲.辛酰溴乳油中加入225 g三硅氧烷助剂,对水450～900 kg/hm2的株防效均达96%以上,表明添加三硅氧烷助剂可以降低30%～50%的用水量。The increasing control effect, reducing dosage and water consumption of trisiloxane additive against MCPA-isooctyl＂ bmmoxynil octanoate 40% EC was conducted. The results showed that added 225 g trisilocane to solution of MCPA-isooctyl ＂bromoxynil octanoate 40% EC, the plant and fresh weight control effects were also 100% against annual broadleaf weeds in linseed （Linum usitatissimum L.） field after 45 days, were increased by 6.38 and 4.88 percentage point than no trisilocane when dosage of the EC （1 500 mL/hm2）and water consumption（675 kg/hm2）were the same. Added 225 g trisilocane to solution of the EC, the plant and fresh weight control effects were above 92% when dosages of the EC were 1 200-1 275 mL/hm2, water consumption was 675 kg/hm2, indicated that trisilocane reduced 15%-20% dosage. Added 225 g trisilocane to solution of the EC （1 500 mL/hm2）, the stem control effects were above 96% when water consumption were 450 and 900 kg/hm2, respectively, which indicated that trisilocane reduced 30%-50% water consumption.

关 键 词：三硅氧烷助剂 40%2甲·辛酰溴乳油 防效 用药量 用水量 

分 类 号：S482.4[农业科学—农药学]