Effect of organic material on transformation and translocafion of metal oxide in albic soil and their impacts on soil fertility

Abstract

Abstract: Soil column experiment showed that in albic soil,DTPA or organochelated Fe, Mn and Al were significantly increased when decayed alfalfa powder was added. Soil available Pwas also enhanced,mainly due to the increase of soil aluminum and iron combined P (P-Al and P-Fe).In albic layer,soil available Pand four forms of inorganic Pwere all significantly positively correlated to the amount of added alfalfa powder,while in surface layer, only available P,P-Al and P-Fe were significantly positively correlated to the dose of organic material. Soil available P,P-Al and P-Fe were significantly correlated to DTPA or organo chelated Fe,Mn.The difference was in surface layer,their relationships were negative,while in albic layer, they were positive.

Key words: Organic material, Oxide, Phosphorus, Albic soil

Wu Longhua, Gao Ziqin . Effect of organic material on transformation and translocafion of metal oxide in albic soil and their impacts on soil fertility[J]. Chinese Journal of Applied Ecology, 1999, 10(4): 423-426.

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