莠去津对春谷田杂草的防除效果
摘要
为探讨38%莠去津在春谷田防除杂草的应用,筛选出最适施用剂量以应用于生产,试验针对谷子苗后草害问题,从杂草株数、鲜质量方面比较了1 500、3 000、4 500、6 000、7 500、9 000 g/hm2的38%莠去津在出苗后茎叶喷施对山西长治春播谷田杂草的防除效果及安全性。结果表明,7 500、9 000 g/hm~2的38%莠去津株防效和鲜质量抑制率最佳,但药害严重,后期恢复不理想;4 500、6 000 g/hm~2的38%莠去津对杂草防治效果较好,对谷子安全性无影响。施用4 500~6 000 g/hm2的38%莠去津,既可以取得较好的防治效果又不会产生药害,最终达到农药减施的目的。
To explore the application of 38% Atrazine in the control of weeds in spring millet field and select the most suitable application dose for production, the experiment compared the control effect and safety of 38% Atrazine spraying on stems and leaves of1 500, 3 000, 4 500, 6 000, 7 500, 9 000 g/hm~2 in the control of weeds in spring sowing millet field of Changzhi, Shanxi in terms of weed number and fresh quality. The results showed that 7 500, 9 000 g/hm~2 of 38% Atrazine spraying had the best control effect and fresh quality inhibition rate, but the damage was serious and the recovery was not ideal. 4 500, 6 000 g/hm2 of 38% Atrazine spraying had a good effect on weed control, but had no effect on the safety of millet. Applying 4 500-6 000 g/hm~2 of 38% Atrazine can not only achieve better control effect, but also no harm, and finally achieve the goal of reducing pesticide application.
引文
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