土壤接种厚垣孢子，秧田期或本田期均可在叶片上检测到相当数量的厚垣孢子。以分蘖末及拔节期孢子量最多。孕穗至抽穗期剑叶及幼穗上亦有大量厚垣孢子，以幼穗上较多。大田采样观察与土壤接种试验相同．通过试验筛选出毒菌锡对厚垣孢子具杀菌作用，为孕穗期叶面防治稻曲病提供依据。 Soil inoculation Chlamydospore, seedling field or Honda period can detect a significant amount of chlamydospores on the leaves. At the end of tillering and jointing spores the most. From booting to heading stage, there are also a large number of chlamydospores on the leaves of sword and young ears, with more young ears. Field sampling observation and soil inoculation test the same. Through the test, the germicidal effect of toxin bacteria on chlamydosporium was screened out, which provided the basis for prevention and cure of rice false smut in the booting stage.