白浆土植物系统营养物质转化机制及其有效性研究Ⅴ.有机物对磷根际有效性的影响  

Transformation mechanism and availability of mutrients in albic soil plant system Ⅴ. Effect of organic material on phosphorus availability in soil wheat rhizosphere system.

作　　者：吴龙华[1] 高子勤[1] 

机构地区：[1]中国科学院沈阳应用生态研究所,沈阳110015

出　　处：《应用生态学报》1999年第5期576-578,共3页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金

摘　　要：采用根盒试验研究了施用紫花苜蓿腐解物对白浆土小麦根际Ｐ 素形态转化、有效性及小麦植株Ｐ 素吸收的影响．结果表明，施用有机物料使土壤有效磷显著上升，铝磷、铁磷含量也显著升高，且培养时间越长，效果越明显．小麦植株含Ｐ 量明显上升，且与非根际土壤铝磷。Rhizo box experiment showed that soil available P was significantly increased when decayed alfalfa was added, and soil Al P and Fe P were also enhanced strikingly. The effects were enlarged when time extending. P concentration in wheat plants was increased significantly, and clearly related to the change of soil Al P and Fe P in non rhizosphere.

关 键 词：紫花苜蓿 白浆土 磷 根际效应 

分 类 号：S551.701[农业科学—作物学]