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研究了苯基（１，２，３）噻二唑－７－硫代羧酸硫甲酯（ＢＴＨ）处理诱导水稻对稻瘟病的系统获得 抗性的表现。结果表明：离体条件下，ＢＴＨ对稻瘟菌的菌丝生长和分生孢子萌发无明显的抑制作 用；ＢＴＨ处理后显著减轻了水稻幼苗稻瘟病的病情，其最佳处理浓度为０．５ｍｍｏｌ／Ｌ，最佳处理时间 是接种稻瘟菌前７ｄ，持久期在１４ｄ以上；０.５ｍｍｏｌ／Ｌ ＢＴＨ处理水稻第二张完全叶，可使未处理的 上部叶片的病情显著降低。这些结果说明ＢＴＨ诱发了水稻幼苗对稻瘟病的系统获得性抗性（ｓｙｓ－ ｔｅｍｉｃ ａｃｑｕｉｒｅＤ ｒｅｓｉｓｔａｎｃｅ，ＳＡＲ）。试验结果还表明，ＢＴＨ浸种可诱发水稻 ３－４叶期对猪瘟病的抗性： 抽穗前处理叶片明显降低了水稻穗颈瘟的发病率。
The systemically induced resistance of rice to rice blast induced by phenyl (1, 2) thiadiazole-7-thiocarboxylate (BTH) treatment was studied. The results showed that under in vitro conditions, BTH had no obvious inhibitory effect on mycelial growth and conidial germination of Magnaporthe grisea; BTH treatment significantly reduced the rice blast blast disease, the best treatment concentration was 0.5mmol / L. The best treatment time was 7 days before inoculation with Magnaporthe grisea and the duration was longer than 14 days. The treatment of 0.5 mmol / L BTH for the second complete leaf of rice could significantly reduce the untreated upper leaves. These results indicate that BTH induces sys- temic acquireD resistance (SAR) in rice seedlings. The results also show that soaking BTH can induce resistance to classical fungus in 3-4 leaf stages: the pre-heading leaves significantly reduced the incidence of rice panicle blast.