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用7.5%啶磺草胺(优先)等除草剂于小麦苗期、禾本科杂草3叶期左右喷施,进行了药效对比试验。结果表明,7.5%啶磺草胺225 mL/hm2,药后20 d株防效为77.93%,药后40 d株防效为96.93%、鲜重防效为95.88%,防效优于6.9%精唑禾草灵1 050 mL/hm2、15%炔草酸300 g/hm2。用药时无低温对小麦安全,但在连续低温的情况下,啶磺草胺会对小麦造成明显的失绿和矮化,不宜使用。
The experiment was conducted with the herbicide 7.5% sulfisalazide (preferred) and other herbicides sprayed on the wheat seedling stage and the three-leaf stage of grass weeds for efficacy comparison test. The results showed that the control effect of 7.5% sulfasalazine 225 mL / hm2 was 77.93% after 20 d, the control effect was 96.93% after 40 d, the fresh weight control efficiency was 95.88%, the control efficiency was better than 6.9% Hepazole 10 050 mL / hm2, 15% Clindamycin 300 g / hm2. No low-temperature treatment of wheat safety, but in the case of continuous low temperature, the pyridine sulfasalazine will cause significant green loss and dwarfing of wheat, should not be used.