冀西北马铃薯田间杂草化学防治研究

摘要

[ Objective ] In order to search the effective chemical control method on weed in the potato fields in Northwest Hebei. [ Method ] Weed control experiment was carried out by 15％ Fluazifop emulsifiable concentrate ( EC ) and 24％ oxyfluorfen emulsifiable concentrate (EC) in potato fields which were treated by 48％ Trifluralin EC and 50％ Acetochlor EC formerly. [ Result] The result showed that 50％ Aeetochlor EC got better effect in germination rate of potato on pre-sowing treatments of soil than 48％ Trifluralin EC. Weed could effective controlled by 24％ oxyfluorfen EC (300,450 ml/hm2 ) in pre-sowing treatments of soil by 50％ Acetochlor EC. The application time of 24％ oxyfluorfen EC was at seedling stage. Using of chemical weed control in potato field, the expenditure could lower and reach to 1050 - 1080 Yuan/hm2 in northwest in Hebei province. [ Conclusion] Pre-sowing treatments of soil with chemicals combining with chemical control at seed ling stage is a effective way of controlling weed in the potato fields in Northwest Hebei.%[目的]寻找控制冀西北地区马铃薯田间杂草的有效化学防除方法.[方法]在经48%氟乐灵乳油和50%乙草胺乳油处理过的马铃薯田间使用15%精稳杀得乳油和24%果尔乳油进行除草试验.[结果]研究结果表明,50%乙草胺乳油在播前进行土壤处理比48%氟乐灵乳油具有不影响出苗率的优点,效果更好;播种前用50%乙草胺乳油2 625 mL/hm2处理过的土壤,苗期用24%果尔乳油300、450ml/hm2可以很好地防治田间杂草.在冀西北地区马铃薯生产中使用化学除草可以节省成本1 050～1 080元/hm2.[结论]播种前药剂处理土壤结合苗期化学防治是控制冀西北地区马铃薯田间杂草的有效途径.