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用合成的新哒嗪类化合物9403，以fenridazon－k为对照，进行了9403对小麦的去雄效应的研究，试验结果表明9403对品种农大3338及北农2号的去雄效应与fenridazon－k相似，平均去雄率为98．0％，与fenridazon－k（98．2％）差异不显著，但9403对籽粒的影响程度比fenridazon－k小；平均人工授粉结实率为89．4％，显著高于fenridazon-k（81．0％）；人工授粉结实千粒重为27．6g，亦显著高于fenridazon－k（26．0g）。在试验的基础上，初步确定了9403对品种农大3338及北农2号较适宜用药时期和剂量。
Using fenridazon-k as the control, we synthesized the new pyridazine compound 9403 and studied the de-homing effect of 9403 on wheat. The results showed that the depigmentation effect of 9403 on Nongda 3338 and Beinong 2 was similar to fenridazon-k Similarly, the average removal rate was 98.0%, which was not significantly different from that of fenridazon-k (98.2%). However, the effect of 9403 on grain size was smaller than that of fenridazon-k. The average rate of artificial pollination was 89.4% Significantly higher than that of fenridazon-k (81.0%). The grain weight of artificial pollination was 27.6g, which was also significantly higher than that of fenridazon-k (26.0g). On the basis of the experiment, 9403 varieties of Nongda 3338 and Beinong 2 were preliminarily identified as the more suitable dosage and dosage.