【摘要】 作者于１９９４～１９９６年采用田间小区试验进行了威农防除移栽稻田扁秆草施药技术研究。结果表明，威农对株高１～７ｃｍ的多年生扁秆草有强烈的杀伤和抑制作用。水稻移栽后１～１０ｄ威农第１次施用，剂量有效成分为６７５～９０ｇ／ｈｍ２、在此基础上，间隔１５～２０ｄ再一次施用威农４５～６７５ｇ／ｈｍ２，可有效地防除扁秆草，总防效可达９０％以上，比威农仅施用１次的防除效果提高１３％以上，达到了早期消灭扁秆草的目的，对水稻安全，施药方法简单，以药土法撒施即可。更多还原

【Abstract】 Field experiments with Weinong(30%bensulfuron methyl) were conducted from 1994 to 1996 in Harbin, A new herbicide Weinong was developed by Dupont Agricultural Chemicals Ltd Shanghai The experimental results showed that Weinong had a excellent kill and inhibitory effect on Scirpus planiculmis Fr Schm when its length in 1～7 cm Weinong should be applied at rates of 67 5～90g ai/hm 2 during 1～10days after rice to be transplanted, based on this, the application dosage of Weinong were 45～67 5g ai/hm 2 after 15～20 days for second time The effect of Weinong for controlling the weeds reached 90% of more while the herbcide was used twice in the field experiment and increased by 13% over the only one time The aim to eliminate the perennial weed in early stage was attained in the experiment Weinong was safe to rice The method of applying Weinong was simply broadcasting after it mixed with soil更多还原