76%扑草净·乙草胺·噻吩磺隆乳油防除马铃薯田一年生杂草的效果及安全性
2019-12-13于金萍白鹏华李琦张惟刘亦学
于金萍 白鹏华 李琦 张惟 刘亦学



摘 要:为明确76%扑草净·乙草胺·噻吩磺隆乳油对马铃薯田一年生杂草的防效及对马铃薯的安全性,采用随机区组试验设计方法进行了田间药效试验。在低剂量1 140 g a.i.·hm-2下,药后20 d76%扑草净·乙草胺·噻吩磺隆乳油对一年生杂草的株总防效为89.16%;药后40 d对一年生杂草的株总防效为84.59%;药后55 d对一年生杂草鲜质量总防效为86.96%,较空白对照增产为19.51%。结果表明,76%扑草净·乙草胺·噻吩磺隆乳油对马铃薯田一年生杂草有较好的防治效果,对马铃薯安全,無药害发生,并具有一定的增产作用,是马铃薯田的一种较好的复配除草剂。
关键词:76%扑草净·乙草胺·噻吩磺隆乳油;马铃薯;一年生杂草;防效
中图分类号:S532 文献标识码:A DOI 编码:10.3969/j.issn.1006-6500.2019.11.018
Abstract:The objective is to study efficacy of 76% prometryn·acetochlor·thifensulfuron EC on control annual weeds in potato fields and its safety to the crop .The result showed that : In 20 days after using herbicides, the total control effect of 76% prometryn·acetochlor·thifensulfuron EC on annual weeds at the dose of 1 140 g a.i.·hm-2 was 89.34%;At 40 d after the treatment, the total control effect of 76% prometryn·acetochlor·thifensulfuron EC on annual weeds at the dose of 1 311 g a.i.·hm-2 was 89.34%.At 55 d after treatment, 76% prometryn·acetochlor·thifensulfuron EC of the total control effect on the fresh weight of annual weeds was 86.96%. At 1 140 g a.i.·hm-2,the yield increased 19.51% compared with control. The results showed that 76% prometryn·acetochlor·thifensulfuron EC exhibited good control effect on annual weeds, which was safety to potato. The yield of potato significantly increased by application of this herbicide .It was a good compound herbicide in potato field.
Key words: 76% prometryn·acetochlor·thifensulfuron EC; potato; annual weeds; control effect
马铃薯(Solanum tuberosum L.)是世界第四大粮食作物,也是我国主要粮食作物之一[1]。2013年种植面积达561.13万hm2,总产量8 893万t[2]。马铃薯兼备粮食、蔬菜的属性使其有很大的发展前景,随着种植结构的调整,其种植面积也在逐年加大[3]。随着马铃薯种植面积的增加,机械化栽培程度也随之提高,导致草害问题越来越突出,严重影响了马铃薯的产量和品质[4-5],逐渐成为制约马铃薯生产的主要因素之一。化学除草具有省工、省时、高效的优点,是提高劳动生产效率、发展高效优质农业的重要措施,也是目前马铃薯生产中防除杂草的重要措施之一[6-7]。近年来,随着化学除草剂的广泛应用,农田杂草群落发生很大变化。除草剂药害、杂草抗药性、杂草群落演替以及环境污染等问题不断出现,使农田杂草防治难度加大[8-9],传统的马铃薯田除草剂已经不能满足现实的需要。……
