五种除草剂对棉田杂草防效及棉花产量的影响

Effect of Five Kinds of Herbicides on Weeds Control in Cotton Fields and Cotton Yield

为探索安全高效的棉田杂草化学防除技术,选用5种化学除草剂防治棉田杂草进行田间药效试验,以期筛选出对棉田杂草防效好,对棉花安全的药剂和适宜用量。结果表明,该5种药剂对棉田杂草的防治效果由高到低依次为精异丙甲草胺>仲丁灵>二甲戊灵>乙草胺>丙炔氟草胺。各药剂均能够有效地防除棉田杂草,并对棉花具有较好的安全性。960 g/L精异丙甲草胺乳油为首选药剂。

To explore the safe and efficient chemical control techniques for weeds in cotton fields,five chemical herbicides were selected to control weeds in cotton fields for field efficacy traitsand its appropriate dosages that are effective in controlling weeds in cotton fields and safe for cotton.The results showed that the control effects of the five pesticides on weeds in cotton fields from high to low were metolachlor>sec-butyryl>pendimethalin>acetochlor>flumioxazin.All medicaments can effectively control weeds in cotton fields and have good safety to cotton.960 g/L refined metolachlor EC is the first choice.