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通过田间药效试验明确50%噻吩·苯磺隆水分散粒剂对春小麦田阔叶杂草的防除效果和田间推荐使用剂量。试验结果表明,50%噻吩·苯磺隆水分散粒剂能够有效防除春小麦田阔叶杂草,且对小麦安全。施药后40 d,50%噻吩·苯磺隆水分散粒剂22.5~37.5 g/hm2处理对总草株数防效为79.17%~83.21%,鲜重防效为90.23%~92.58%,春小麦增产率为20.06%~29.49%。50%噻吩·苯磺隆水分散粒剂的田间推荐有效成分用量为22.5~37.5 g/hm2,于小麦3~5叶、杂草5~8叶期进行1次茎叶喷施。
Through the field efficacy test clear control effect of 50% thiophene · tribenuron-methyl water dispersible granules on broadleaf weeds in spring wheat field and the recommended dosage in the field. The results showed that 50% thiophene-tribenuron-water dispersible granules could effectively control broadleaf weeds in spring wheat field and be safe for wheat. 40 d after spraying, the control effect of 50% thiophen-tribenuron-methyl water dispersible granules 22.5-37.5 g / hm2 was 79.17% -83.21% for the total number of grass and 90.23% -92.58% for fresh weight. The yield of spring wheat increased Rates ranged from 20.06% to 29.49%. The recommended dosage of the active ingredient for 50% thiophene-tribenuron-methyl water dispersible granules was 22.5-37.5 g / hm2, spraying on the leaves of 3-5 leaves of wheat and 5-8 leaves of weeds.