Effect of Potassium Solubilizing Bacteria on Rhizosphere Soil Microenvironment of Paris polyphylla var. yunnanensis
10.13422/j.cnki.syfjx.20221017
- VernacularTitle:解钾菌对滇重楼根际土壤微环境影响
- Author:
Shunxin ZHAO
1
;
Chunyang JIANG
1
;
Qiaosheng DENG
1
;
Lingfeng XU
1
;
Huihui DU
1
;
Nong ZHOU
1
Author Information
1. The Chongqing Engineering Laboratory for Green Cultivation and Deep Processing of the Three Gorges Reservoir Area´s Medicinal Herbs， College of Food and Biological Engineering， Chongqing Three Gorges University， Chongqing 404120，China
- Publication Type:Journal Article
- Keywords:
Paris polyphylla var. yunnanensis;
potassium-solubilizing bacteria;
rhizosphere soil;
physical and chemical properties;
microbial community structure;
soil enzyme
- From:
Chinese Journal of Experimental Traditional Medical Formulae
2022;28(16):172-179
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveTo investigate the effects of the inoculation of potassium-solubilizing bacteria on the rhizosphere soil microenvironment of Paris polyphylla var. yunnanensis. MethodThe effects of different potassium-solubilizing bacteria on the physical and chemical properties， microbial community structure， and soil enzyme activity in the rhizosphere soil of P. polyphylla var. yunnanensis were investigated by pot planting at room temperature. The correlation of various indexes was analyzed. ResultThe inoculation with different potassium-solubilizing bacteria could significantly affect the physical and chemical properties of rhizosphere soil of P. polyphylla var. yunnanensis. The mass fractions of available nitrogen， available phosphorus， and available potassium were 24.5-90.5 mg·kg-1， 2.53-25.9 mg·kg-1， and 132-312 mg·kg-1， respectively， and the soil pH was 7.08-7.75， which were in line with the optimal ranges of P. polyphylla var. yunnanensis planting. The inoculation of different potassium-solubilizing bacteria could affect the number of bacteria， actinomycetes， and fungi in rhizosphere soil to varying degrees. The transformation of soil from "fungal type" to "bacterial type" marks the improvement of soil fertility. It also affected the enzyme activity of rhizosphere soil， and the activities of neutral phosphatase， protease， and polyphenol oxidase showed an increasing trend. The correlation analysis showed that the number of bacteria was negatively correlated with the number of fungi （r=-0.856， P<0.01）， positively correlated with the number of actinomycetes， the content of available nitrogen and available potassium， and negatively correlated with soil pH. ConclusionThe inoculation of potassium-solubilizing bacteria can effectively improve the content of available potassium， available nitrogen， available phosphorus， and other nutrients in the rhizosphere soil of P. polyphylla var. yunnanensis， improve soil fertility， alleviate the continuous cropping obstacles of P. polyphylla var. yunnanensis， and lay a theoretical foundation for the green and sustainable development of P. polyphylla var. yunnanensis.
