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在田间小区试验条件下,粉锈宁喷雾防治小麦条锈病,每666.6m~28克用药量对各类型感病小麦品种的效应是有显著差异的,对慢锈品种和前期中感,但抽穗后有抗性的品种均可控制为害,而对极感品种则未能控制产量损失;等比系列用药量对各类型感病品种的效应也是有明显差异的,在 ED_(50)和 ED_(95)(克/666.6m~2)平均值上,极感品种为9.38和74.85,高感品种为4.53和25.43,中感品种为3.62和20.96,慢锈品种为1.82和15.30。根据这一结果,模拟出各类型感病品种大田防治的每666.6m~2适宜用药量,高感品种9—12克,中感品种7—9克,慢锈品种4—6克,并经实践证明,这一剂量标准是可行的。拌种对压低各类型感病品种的成株期病情也有明显差异,造成这种差异的主要原因是各类型品种流行速度不同。
Under field plot test conditions, the effect of spraying spraying rust on the stripe rust of wheat was 666.6m ~ 28g for all kinds of susceptible wheat cultivars. There was a significant difference between the susceptible wheat cultivars and the early rust cultivars, but there was Resistant varieties could control the damage, but the most susceptible varieties failed to control the yield loss; the effects of different series of dosage on different types of susceptible varieties were also significantly different. In ED50 and ED95, (G / 666.6m ~ 2) on average, the extreme varieties 9.38 and 74.85, high susceptible varieties 4.53 and 25.43, the susceptible varieties 3.62 and 20.96, slow rust varieties 1.82 and 15.30. According to the result, the suitable dosage for every 666.6m ~ 2 for field control of various susceptible varieties was simulated, 9-12g for high susceptible variety, 7-9g for moderate susceptible variety and 4-6g for slow rust variety, Practice has proved that this dose standard is feasible. Seed dressing on the various types of susceptible varieties to reduce the adult disease were significantly different, the main reason for this difference is the prevalence of different types of varieties of different speeds.