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去稗安防除稻田杂草效果显著,在早稻直播田每667m~2施用去稗安1%悬浮剂150-300ml,药后61d杂草总体株、鲜重防效分别在80%和90%以上。即使在低剂量下,对恶性杂草千金子防效也达90%以上,且持效期长,一次施药就能控制水稻整季草害。但每667m~2施用量超过350ml对稻苗有明显的药害,且减产甚重。
The effect of weed control on weed control in paddy field was remarkable. Applying 1% suspension of barnyardin to 150-300ml every 667m ~ 2 in direct seeding rice field, the total fresh weight of weeds at 61d after treatment was 80% and 90% respectively . Even at low doses, the protective effect against the weeds of golden weeds has reached more than 90%, and the long-lasting effect can be controlled by a single application of rice in the whole season. However, application of more than 350ml per 667m ~ 2 had obvious phytotoxicity on rice seedlings, and the yield was very heavy.