Effects of Inoculation of Arbuscular Mycorrhizal Fungus and Apophysomyces spartina on P-uptake of Castor Oil Plant(Ricinus communis L.) and Rhizosphere Soil Enzyme Activities under Salt Stress  

盐胁迫下AM真菌和盐沼鳞质霉菌对蓖麻磷吸收和根际土壤酶活性的影响（英文）

作　　者：张焕仕[1] 钦佩[2] 张卫明[1] 

机构地区：[1]南京野生植物综合利用研究院,江苏南京210042 [2]南京大学盐生植物实验室,江苏南京210093

出　　处：《Agricultural Science & Technology》2014年第4期659-664,共6页农业科学与技术（英文版）

基　　金：Supported by the China Postdoctoral Science Foundation(2012M511728)~~

摘　　要：[Objective] In order to explore the mechanism of combined inoculation mi- croorganisms in improving coastal saline soil property and plant growth. [Method] The pot experiment was used to assess the effects of different inoculated proportion of arbuscular mycorrhizal fungi （AMF） and Phosphate-sotubilizing fungus. Apophysomyces spartina, on growth, chlorophyll contents, P-uptake of castor bean （Ricinus communis L.） and rhizosphere soil pH values, available P concentrations, enzyme activities. [Result] The mixed inoculation of AMF and A. spartina significantly reduced soil pH value, increased soil available phosphorous contents, improved the activities of soil invertase, urease, neutral phosphatase, and alkaline phosphatase. Chlorophyll contents, P-uptake, and plant dry weight of castor bean were also in- creased. The optimal proportion of the number of AMF spores to A. spartina colonies was 28.56：11.5×10^5, which had positive effects on saline soil and could stimulate plant growth under greenhouse condition. [Conclusion] Appropriate propor- tion of AMF and A. spartina had the potential to enhance coastal saline soil prop- erty and promote castor bean growth.[目的]为了探索复合接种微生物对海滨盐土改良以及促进生长植物的作用机理。[方法]利用盆栽试验考察在海滨盐土中接种不同比例的AM真菌和盐沼鳞质霉菌(Apophysomyces spartina)对蓖麻生长、叶绿素含量、磷吸收和土壤速效磷含量、pH值、土壤酶活性的影响。[结果]AM真菌和盐沼鳞质霉菌混合接种可显著降低土壤pH值,增加土壤速效磷含量,提高土壤脲酶、转化酶、中性和酸性磷酸酶活性,同时提高了叶片叶绿素含量并增加了蓖麻对磷营养的吸收,在盐胁迫下有效促进了蓖麻幼苗生长。温室条件下在海滨盐土中接种AM真菌和盐沼鳞质霉菌促进蓖麻生长最有效的混合比例是28.56∶11.5×105(AM真菌孢子数:盐沼鳞质霉菌落数)。[结论]适当比例的AM真菌与解磷真菌具有提高海滨盐土质量并促进蓖麻生长的潜力。

关 键 词：AM fungus Apophysomyces spartina Castor bean Soil enzyme Coastal saline soil 

分 类 号：S565.6[农业科学—作物学]