Effect of Different Exogenous Arbuscular Mycorrhizal Fungi Combinations on Rhizosphere Soil Environment of Paris polyphylla var. yunnanensis / 中国实验方剂学杂志

Objective:To investigate the effect of different arbuscular mycorrhizal （AM） fungi combinations on the rhizospheric environment of Paris polyphylla var. yunnanensis. Method:The different combinations of 12 arbuscular mycorrhizal （AM） fungi species were inoculated to the seedlings P. polyphylla var. yunnanensis planted in the sterilized soil under the condition of room temperature to investigate their infection abilities and effects on the root activity，soil nutrient contents，enzyme activities and microbial community structure of P. polyphylla var. yunnanensis rhizospheric environment. Result:The inoculation of exogenous AM fungi can regulate the spore densities and infection rate of P. polyphylla var. yunnanensis rhizosphere AM to improve the root activity， the exogenous AM fungi can also regulate the nutrient contents in the rhizosphere soil，increase the contents of total glomalin and easily extracted glomalin，increase the abilities of P. polyphylla var. yunnanensis to absorb the available N，P and K，and increase the enzyme activities in the rhizosphere soil， improve the microbial community structure， and improve the rhizospheric environment of P. polyphylla var. yunnanensis by increasing the bacteria/fungi and bacteria/actinomycetes quantity ratios and reducing the fungi/actinomycetes quantity ratio. Conclusion:Different AM fungal treatment groups had certain effects on the physicochemical properties and microbial community structure of the rhizosphere soil of P.polyphylla var. yunnanensis，which provided a technical basis for the cultivation of P. polyphylla var. yunnanensis.

Effect of compound planting on soil physical and chemical properties and soil enzyme activities of Salvia miltiorrhiza / 中国中药杂志

The effects of four kinds of different plant populations on the soil physical and chemical properties and soil enzyme activities of Salvia miltiorrhiza were analyzed by setting up four kinds of mixed planting groups, such as S. miltiorrhiza and Cassia obtusifolia, Capsicum annuum, Perilla frutescens and Zea mays. And through the root isolation treatment, we preliminarily explored the formation mechanism of the four kinds of matching plants of soil physical and chemical properties and soil enzyme activities of S. miltiorrhiza, and chose the matching plants suitable for the establishment of the compound population with S. miltiorrhiza,and provided the basis for constructing high efficiency compound planting pattern of S. miltiorrhiza. The results showed that there were significant differences in soil physical and chemical properties and soil enzyme activitiesof Salvia miltiorrhiza in different compound population mixed.The combination of C. obtusifolia, P. frutescens, Z. mays and S. miltiorrhiza mixed planting were all reduced the soil cation exchange capacity and soil enzyme activities, and increased the soil electric conductivity. The compound planting of P. frutescens and S. miltiorrhiza increased the soil cation exchange capacity and soil enzyme activities, and reduced the soil electric conductivity. Therefore,The compound planting population of P. frutescens and S. miltiorrhiza is conducive to improve soil physical and chemical properties and increase soil microbial activity, which is the best collocation species of S. miltiorrhiza.