摘要
[目的]为探究解磷真菌金黄蓝状菌(Talaromyces aurantiacus)JXBR04在毛竹促生作用中对土壤生物有效性磷组分的贡献。[方法]采用温室盆栽法研究该菌株对毛竹根际土壤生物有效磷组分含量、土壤有效磷、矿质氮含量及相关土壤酶活性的影响,并分析该菌株对毛竹的促生效果。[结果]与对照(CK)相比,施用菌株JXBR04制剂显著提高了毛竹根际土壤中盐酸磷和氯化钙磷组分含量,显著增强了土壤脲酶和过氧化氢酶活性,而对酶磷、柠檬酸磷组分含量和土壤酸性磷酸酶、碱性磷酸酶活性并无影响,且土壤有效磷和矿质氮含量分别提高了78.3%和13.3%;土壤盐酸磷、氯化钙磷组分含量和土壤有效磷含量、毛竹生物量均呈极显著正相关,表明施用菌株JXBR04制剂显著促进了毛竹的生物量。[结论]金黄蓝状菌JXBR04主要通过提高土壤氯化钙磷和盐酸磷组分含量来增强土壤有效磷供给,进而促进毛竹对土壤有效磷的吸收利用和生物量增长,且该过程并无土壤磷酸酶介导。本研究可为竹林施用磷肥高效利用和管理提供理论依据。
[Objective]To explore the contribution of the phosphorus-solubilizing fungi Talaromyces aurantiacus JXBR04 to soil phosphorus bioavailability in growth promotion of Phyllostachys edulis. [Method]Greenhouse potting experiment was used to study the effect of the strain on the content of phosphorus bioavailability in the rhizosphere soil of Ph. edulis. The contents of available phosphorus, mineral nitrogen the activities of related soil enzymes in the soil were analyzed, and the growth-promoting effect on Ph. edulis by inoculating on JXBR04 was evaluated.[Results]Compared with the control, the application of JXBR04 significantly increased the content of HCl-P and CaCl2-P fraction, increased the activities of soil urease and catalase in the rhizosphere soil of Ph. edulis, while the content of enzyme-P, citric acid-P fraction, the activities of soil acid phosphatase and alkaline phosphatase were not affected. The content of soil available phosphorus and mineral nitrogen increased by 78.3% and 13.3%, respectively.The content of HCl-P and CaCl2-P in soil was significantly positively correlated with the content of available phosphorus in soil and the biomass of Ph. edulis, indicating that the application of JXBR04 significantly promoted the biomass of Ph. edulis. [Conclusion]The increase of available phosphorus in soil is driven mainly by the content of CaCl2-P and HCl-P fraction though inoculating on strain JXBR04, which can promote Ph. edulis to absorb and utilize the available phosphorus to increase biomass. This regulated process is not mediated by soil phosphatase.
作者
杨豆
石福习
万松泽
李广强
孔令刚
张扬
YANG Dou;SHI Fu-xi;WAN Song-ze;LI Guang-qiang;KONG Ling-gang;ZHANG Yang(Key Laboratory of National Forestry and Grassland Administration on Forest Ecosystem Protection and Restoration of Poyang Lake Watershed,Jiangxi Agricultural University,Nanchang 330045,Jiangxi,China;Zaozhuang Agricultrue and Rural Affairs Development Center of Shandong,Zaozhuang 277000,Shandong,China;Extension Station of Forestry Technology in Jinan City,Ji5 nan 271100,Shandong,China)
出处
《林业科学研究》
CSCD
北大核心
2021年第3期145-151,共7页
Forest Research
基金
国家自然科学基金项目(31660190&41867007&42067049)
江西省自然科学基金项目(20192BAB214019&20202BABL213035)。
关键词
毛竹
金黄蓝状菌
磷组分
生物量
Phyllostachys edulis
Talaromyces aurantiacus
phosphorus fraction
biomass
