| 引用本文: | 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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| AMF对复合盐胁迫下草莓根际微生物和酶活性的影响 |
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薛红飞1, 冯彪1, 唐悦1, 李石恒1, 李志伟1, 邓渊2, 樊丽1
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1.内蒙古农业大学 呼和浩特;2.陕西省宝鸡市千阳县种子管理站 宝鸡
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| 摘要: |
| 【目的】探索丛枝菌根真菌(AMF)对复合盐胁迫下草莓土壤微生态环境的作用效果。【方法】以‘甜查理’草莓(Fragaria × ananassa Duch.)为研究对象,以NaCl与Na2SO4摩尔比为1:1的混合盐模拟盐毒害,分别设置0 、50 和100 mmol.L-1三种混合盐浓度,每种盐浓度设置接种与不接种AMF,共6个处理,研究接种AMF对草莓根际土壤微生物数量和酶活性的影响。【结果】随着盐浓度增加,草莓植株的盐害指数增高；菌根侵染率随盐浓度的升高而降低；土壤微生物数量和脲酶、过氧化氢酶、蔗糖酶、淀粉酶活性随着盐浓度增加均降低。盐胁迫28天后,接种AMF的草莓盐害指数比不接种处理下降最明显,分别降低了10.91%、21.12%、23.93%。接种AMF提高了土壤脲酶、过氧化氢酶、蔗糖酶、淀粉酶活性,微生物数量显著增多。相关性分析表明,复合盐胁迫下,微生物数量和酶活性间有显著或极显著的正相关关系,二者与盐害指数均呈现负相关关系。【结论】接种AMF改善了盐分胁迫下土壤微生态环境,有助于提高草莓对盐碱环境的适应性,缓解复合盐胁迫对草莓生长的伤害。 |
| 关键词: 复合盐胁迫;丛枝菌根;草莓;微生物;酶活性 |
| DOI： |
| 分类号:S642.1 |
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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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