【摘要】 根据施田补的田间防除旱育秧苗床除草效果、盆栽试验研究其对水稻的安全性及与扑草净的混用配方测定、室内生物测定土壤湿度对其药效的影响。试验结果表明：施田补可有效防除旱秧苗床多种单双子叶杂草，防效可达９０％以上，但稻种覆土不严极易发生药害；土壤水分是其发挥药效的重要因素，施田补在苗床土表饱和湿度时施用效果最佳；通过施田补与扑草净混用后，对杂草防效明显高于两药单用效果，且提高了对秧苗的安全性。其中施田补５６１ｍｌ／ｈｍ２与扑草净３７５ｇ／ｈｍ２混用配方为除草效果大于９０％的较为合理配方更多还原

【Abstract】 The experiment on the application technique of controlling the weeds with pendimethalin in dry raise rice seeding,studied the effect of soil moisture on it,mixed it with prometryn have been done.The result showed:pendimethlin has good effect for grass weeds and broad-leafed weeds,it has over 90% of the control effect,but it has harmful effect on the growth of rice when the rice seed hasnt been covered by soil.propriety soil moisture was an important influencing factor for pendinmethalin,it has good effect in the high soil moisture conditions.Applied it mixed prometryn can enlarge the weeding spectrum of the herbicide distinctly,improve the effect on controlling weed and security for rice,Mixed pendimethalin 561ml/hm2 with prometryn 375g/hm2 has the effect of controlling weeds over 90%.更多还原