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中国农学通报

中国农学通报 ›› 2005, Vol. 21 ›› Issue (3): 262-262.

所属专题： 玉米； 烟草种植与生产

• 目次 • 上一篇    下一篇

免耕播种春玉米田土壤封闭除草药剂试验

杨建国,谢爱婷,宋玉林,王泽民 ,王秀琴   

  • 出版日期:2005-03-05 发布日期:2005-03-05

Trails of Herbicides in the non~tillage spring maize field

Yang Jianguo, Xie Aiting, Song Yulin, Wang Zemin ，Xiuqin Wang   

  • Online:2005-03-05 Published:2005-03-05

摘要： 对5种除草剂的14个组合处理进行田间比较试验，结果表明：莠去津与3种除草剂分别混用的除草效果比单用莠去津好。筛选出了适合免耕春玉米田土壤封闭使用的高效除草剂配方，即每公顷用38%莠去津悬浮剂1650ml加90%禾耐斯乳油900ml，或96%金都尔乳油900ml，或33%施田补乳油1950ml，于玉米播后至出苗前施药，除草效果可达92%；对有苘麻(Abutilon theophrasti)和铁苋菜(Acalypha australis Linn.)等难治的双子叶杂草较多地块，每公顷用96%金都尔乳油900~1200ml或90%禾耐斯乳油900~1050ml加80%阔草清水分散粒剂45~60g，防除双子叶杂草效果达96%以上；另外，对免耕春播玉米田使用土壤封闭方法除草，播种前或播种同时杀明草也是必要的。

Abstract: The herbicide experimental trails, including 5 herbicides and their fourteen combination treatments, were conducted in spring maize field. Atrazine mixed with each of the 3 herbicides had better phytocidal effect than it was applied alone. The dosages, which were 1650 ml/hm2 of Atrazine38SC with 900 ml/hm2 of Acetochlor90EC，or 900 ml/hm2 of s~metolachlor96EC，or 1950 ml/hm2 of Pendimethalin33EC，were applied to soil surface post-sowing and pre-emerge, the phytocidal efficacies reached to 92%; For the field with dicotyledon weeds, especially Abutilon theophrasti and Acalypha australis Linn, applying 45~60 g/hm2 of Flumetsulam80WG plus either 900~1200 ml/hm2 of s-metolachlor96EC or 900~1050 ml/hm2 of Acetochlor90EC, dicotyledon weeds efficacies were higher than 96%. Additionally, the emerged weeds should be eliminated before these herbicides application.