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特谱唑对小麦白粉病效果优异,用药量低,持效期长,内吸传导性能强,使用安全,而且比目前常用的高效药剂粉锈宁效果更好,剂量更少。温室测定结果表明,特谱唑对白粉病菌的毒力比粉锈宁更强,其EC_(50)的毒力指数(以粉锈宁为100),治疗作用的为573,保护作用的为2096;具有较强的内吸向上传导性能,采用喷雾法,在施药后长成的第1叶片(即第2叶)可保持很高的药效,而长成的第2叶片的效果则明显下降。田间试验和示范结果表明,特谱唑的用药量一般以3—4g/666.7m~2剂量比较合适;用药期以小麦旗叶伸长期至抽穗期,病茎率20％左右比较合适;用药次数以上述的适宜剂量和时期喷施1次,便能控制整个成株期白粉病为害。
Tsp has excellent effect on wheat powdery mildew, low dosage, long holding period, strong internal conduction and safe use, and is more effective and less dosage than the commonly used highly effective agent triadimefon. The greenhouse test results showed that Toxoprofen virulence of powdery mildew was stronger than that of triadimefon. The virulence index of EC 50 (with triadimefon 100) was 573 for treatment and 2096 for protection; , The first leaf (ie, the second leaf) that grows after spraying can maintain a high efficacy and the effect of the second leaf grows significantly. Field trials and demonstration results show that the dosage of toconazole is generally 3-4g / 666.7m ~ 2 dose is more appropriate; the duration of application of wheat flag leaf elongation to heading, the disease stem rate of about 20% more appropriate; number of drugs Spraying once with the above appropriate dosage and period, will be able to control the powdery mildew damage throughout the adult plant.