免耕抛秧田一次性化学除草效果试验

本文介绍了应用25%丁苄细粒剂、10%苄黄隆可湿性粉剂加50%丁草胺与尿素混合撒施对晚造免耕抛秧田杂草的防治效果、安全性和增产作用。试验结果表明:在水稻抛栽后5d施丁苄80g、120g以及在抛栽后7d施苄黄隆15g加丁草胺150g对晚造免耕抛秧田的主要杂草如稗草、矮慈姑、鸭舌草、异型莎草和节节菜等均有显著的防效,其总体防治效果可分别达到82.26%、91.13%和93.35%,且对水稻生长无不良影响,保产作用明显。

An Experiment on Effect of Application of Disposable Chemical Weedicide into Non- Tilling Rice Seedling Throwing Paddy

Effect of prevention and control of weed and safety as well as increase of paddy rice yield by applying 25% of Dingbian granule,10% of wetting Bianhuanglong powder plus 50% of Butachlor mixing with urea into the non-tilling and late round rice seedling-throwing paddy fields is present in this paper.The trial result showed that it brought about significant effect on prevention and control of many weed in paddy field through applying Dingbian of 80g and 120g after throwing rice seedling for 5 days and applying Bianhuanglong of 15g plus Butachlor of 150g after throwing rice seedling for 7 days.The overall effect of prevention and control of weed could reach 82.26%,91.13% and 93.35% respectively and had no any side-effect on growth of rice and had obvious effect on increase of rice yield.