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【目的】通过播前土壤喷雾田间药效试验,筛选对谷子田杂草具有较好防效的除草剂,明确其合理使用剂量,为科学、安全、高效应用除草剂提供依据。【方法】采用随机区组的方法,定点取样调查各处理小区的杂草株数,测定各供试药剂对杂草的防除效果。【结果】药后60 d,10%单嘧磺隆可湿性粉剂135、180和210 g a.i./hm2处理、38%莠去津悬浮剂1 824 m L a.i./hm2处理和2 280 m L a.i./hm2处理对谷子田阔叶杂草的株防效均在76%以上,对阔叶杂草的鲜重防效均在80%以上;10%单嘧磺隆可湿性粉剂180 g a.i./hm2处理和210g a.i./hm2处理对谷子田一年生杂草的株防效均在74%以上,对一年生杂草的鲜重防效均在80%以上。【结论】从除草剂药效和作物安全性考虑,10%单嘧磺隆可湿性粉剂和38%莠去津悬浮剂可推荐用于新疆谷子田播前土壤喷雾使用。
【Objective】 The objective of this study was to screen herbicides with better anti-weed effect on weeds in millet fields by field-effect test of soil spray prior to sowing, to clarify the reasonable dosages of herbicides and to provide basis for the scientific, safe and efficient application of herbicides. 【Method】 Randomized block method was used to survey the number of weeds in each plot and determine the control effect of weeds on weeds. 【Result】 The results showed that after 60 days of treatment, 135%, 180%, 210 g ai / hm2 of 10% monosulfuron WP, 1824 m L ai / hm2 of 38% The control effect of hm2 on the broad-leaved weeds in millet fields was more than 76%, and the fresh-weight controlling effect on broad-leaved weeds was over 80%. The treatment of 10% monosulfuron WP was 180 g ai / hm2 And 210g ai / hm2 treatment of millet field annual weeds control effect is above 74%, fresh annual weed control effect of more than 80%. 【Conclusion】 From the perspective of herbicide efficacy and crop safety, 10% monosulfuron WP and 38% atrazine suspension can be recommended for soil spraying before millet field planting in Xinjiang.