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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。
In order to screen the herbicide which is safe, efficient and low-cost at the bud stage of rapeseed, the author compared the effects of different chemical herbicides and their different dosage on weed control in rape field. The results showed that the chemical herbicides used had no toxic effects on rapeseed and had more than 94% control effect on grass weeds and broadleaf weeds in rapeseed fields. The chemical herbicides had the effect of increasing yield and increasing income in rapeseed fields with an increase of 4340 yuan / hm ~ 2, of which 50% isoprenone acetochlor EC 1200 m L / hm2 watered 1125 kg / hm ~ 2 after spraying rapeseed soil surface spraying, weeding, the effect of increasing production and income is better.