伊贝根际微生物分布与西贝素的相关性

Distribution of Rhizosphere Soil Microbes of Fritillaria pallidiflora and Their Correlation with Imperialine Content

摘要:

分析了伊犁贝母不同生育期(返青期、显蕾期、盛花期和收获期)根际、非根际可培养土壤微生物动态变化, 探讨了根际土壤微生物与西贝素含量之间的相关性。结果表明, 在伊犁贝母的生长发育期, 根际和非根际土壤微生物数量的分布规律是: 细菌 > 放线菌 > 真菌。除了显蕾期非根际真菌数量大于根际以外, 其他生长时期根际细菌、放线菌和真菌数量远远大于非根际, 细菌根际效益明显。盛花期根际土壤中细菌和真菌数量达到了最多。土壤真菌与西贝素含量呈极显著正相关。

Abstract:

Variation of rhizosphere and non-rhizosphere cultured soil microbes at the different growth stages of Fritillaria pallidiflora were analysed. The correlation of rhizosphere soil microbes with imperialine content were discussed. The results showed that the ecological distribution characteristics of rhizosphere and non-rhizosphere soil microbes at every growth stages (Re-greening stage, bud stage, full flowering stage and harvest-time) of Fritillaria pallidiflora were all bacteria > actinomycete > fungi. Only in bud stage, non-rhizosphere fungi number is more than rhizosphere’s. At other stages rhizosphere bacteria, actinomycete and fungi were more than non-rhizosphere’s. Especially, for bacteria, the rhizosphere effect of Fritillaria pallidiflora was obvious. Number of bacteria and fungi in the rhizosphere soil of full flowering stage are most in all stages. Soil fungi number had extremely marked positive correlation with imperialine content.