| Cite this article: | 薛红飞,冯彪,唐悦,等.AMF对复合盐胁迫下草莓根际微生物和酶活性的影响[J].灌溉排水学报,0,():-. |
| XUE Hong-fei,FENG Biao,TANG Yue,et al.AMF对复合盐胁迫下草莓根际微生物和酶活性的影响[J].灌溉排水学报,0,():-. |
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| Effects of AMF on Microbial and Enzyme Activities in Rhizosphere of Strawberry under Compound Salt Stress |
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XUE Hong-fei1, FENG Biao1, TANG Yue1, LI Shi-heng1, LI Zhi-wei1, DENG Yuan2, FAN Li1
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1.Inner Mongolia Agricultural University;2.Seed Management Station of Qianyang County in Baoji City,Baoji
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| Abstract: |
| 【Background】The unique climatic conditions in Inner Mongolia were suitable for the growth of strawberry, but the root system of strawberry was shallow and poor salt resistance. So the growth and development of strawberry were seriously affected by the topsoil condition. The large area of salinized soil and the secondary salinization of greenhouse soil in Inner Mongolia became the main factors limited the local development and popularization of strawberry, which was the problem to be solved in the current agricultural sustainable development. 【Objective】 The objective of this paper was to explore the effects of arbuscular mycorrhizal fungi (AMF) on soil microecological environment of strawberry under compound salt stress. 【Method】Different salt concentrations 0 mmol.L-1、50 mmol.L-1、100 mmol.L-1and AMF inoculation treatments were set with a mole ratio of NaCl and Na2SO4 as 1:1 to simulate salt toxicity using strawberry cultivar ‘Sweet Charlie’ to study the effects of AMF inoculation on microbial quantity and enzyme activity in strawberry rhizosphere soil. 【Result】With the increasing of salt concentration, the salinity index of strawberry plants increased, while the rate of mycorrhizal infection, the number of soil microorganisms and the enzyme activity were all decreased. The number of soil microorganisms and the activities of urease, catalase, sucrase and amylase decreased with the increase of salt concentration. After 28 days of salt stress, the salt damage index of strawberry inoculated with AMF decreased by 10.91%, 21.12% and 23.93%, respectively, compared with that of non-inoculation. The activities of urease, catalase, sucrase and amylase were increased by AMF inoculation, and the number of microorganisms was significantly increased. The correlation analysis showed that under compound salt stress, there was significant or extremely significant positive correlation between microbial population and enzyme activity, and both of them were negatively correlated with the salt injury index.【Conclusion】 The inoculation of AMF alleviated the damage of compound salt stress on strawberry plants, and improved the strawberry adaption to salinity environment. |
| Key words: Compound salt stress; AMF; Strawberry; Microbes; Enzyme activity |
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