几种化学除草剂对冬油菜芽期田间除草效果研究

Weeding Effect of Several Herbicides on Winter Rapeseed at Sprouting Stage

为筛选对油菜田芽期安全、高效、低成本的除草药剂,笔者比较了不同化学除草剂及其不同用量对防除油菜田间杂草的效果。结果表明:所用的化学除草剂对油菜无毒害作用,对油菜田的禾本科杂草和阔叶杂草的防效均在94%以上,对油菜田有增产增收的效果,增收在4340元/hm^2以上,其中50%异松·乙草胺乳油1200 m L/hm2兑水1125 kg/hm^2于油菜播种后进行土表喷施,除草、增产增收的效果比较好。

To select safe, high efficient and low cost herbicide for rapeseed in sprouting stage, the control effectof different herbicides and their application amount on weed in rapeseed field were studied. The results showedthat all the applied herbicides were safe to rapeseed plants in this experiment, and the control efficiency wasabove 94% to gramineous weeds and broadleaf weeds in the field, the income increase was above 4340 yuan/hm^2.Among all the herbicides application, soil surface spraying after planting with 50% different pine·acetochlor1200 m L/hm^2 mixed with water 1125 kg/hm^2 had the best weeding and yield-increasing effect.