10%单嘧磺隆对麦田阔叶杂草的防效及后茬复种作物的影响

通过10%单嘧磺隆可湿性粉剂田间喷雾试验表明,其对小麦、玉米的出苗和生长发育均无不良影响,但严重阻碍复种和后茬油菜等双子叶作物的出苗和生长发育,生产上应避免在10%单嘧磺隆可湿性粉剂施药田复种或后茬种植双子叶作物.同时表明对春小麦田阔叶杂草有较好的防除效果,优于目前生产上常用药剂10%苯磺隆可湿性粉剂,且对小麦、玉米安全,具有推广应用前景.建议用药时间为小麦3叶1心、杂草2叶1心期,用药量为225 g/hm2对水900 L.

Controlling Effect of 10% Monosulfuron to Wide-leaf Weed in Wheat Field and Effection to Succeeding Multiple crops

The field test of water-dispersible powdery of 10% monosulfuron showed there was no negative affection to emergence of seedlings, growth of wheat and corn, but this phytocide significantly affected emergence of seedlings, growth of dicotyledon as Multiple-cropping and After crops. Dicotyledon should not be taken as Multiple-cropping and After crops in field sprayed water-dispersible powdery of 10% monosulfuron. This phytocide was better than water-dispersible powdery of 10% Trlbenuron-methyl for controlling wide-leaf weed in spring wheat field. It was safe to wheat and corn, and promising for extension. The proposed time for using this phytocide is when wheat is three-leaf-and-one-leaflet stage and weed in twoleaf-and-one-leaflet stage. The proposed dosage is 225 g/hm^2 with water of 900 L.