Title: STUDIES ON INORGANIC PHOSPHORUS CHARACTERISTICS AND ITS ACTIVATION OF DEGRADED SHAJIANG BLACK SOILS
Abstract: The form,composition and its activation methods of inorganic phosphorus of degraded Shajing black soils were studied.The results obtained are summarized as follows.In Shajiang black soils,the content of apatite(Ca 10 -P) and that of occulated phosphorus (O-P) is comparatively high and they are respectively 27%-48% and 26%-37% of the total inorganic phosphorus,the contents of the total inorganic phosphorus and Ca 2-P?Ca 8-P?Al-P?Fe-P are remarkably reduced with soil fertility degradation.The application of organic manure in degraded Shajiang black soils evidently increase the content of rapidly available phosphorus,nevertheless,under the conditions of not increasing the total amount of phosphorus,applying the fertilizer witha certain content of phosphobacteria can help to bring about the transformation from Ca 8-P?Ca 10 -P,etc.to Ca 2-P,Al-P,etc.of soil inorganic phosphorus,and therefore,increases rapidly the amount of soil available phosphorus.
Publication Year: 2001
Publication Date: 2001-01-01
Language: en
Type: article
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Cited By Count: 1
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