Hong Ji-wan
2014
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0
Influential Citations
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Journal
Chinese Journal of Tropical Crops
Abstract
There are common problems such as phosphorus deficiency, aluminum toxicity, high acidity and so on in the tropical acid soils, and the application of green manure is an effective measure to solve these problems.The phosphorus in the soil will be changed after the application of green manure, while the soil inorganic phosphorus, as an important phosphorus pool in the soil, maybe changed after the application of green manure.The research on the changes can provide the research reference and evidence for the scientific application of green manure in the tropical acid soil. A nylon bag method was used to research the dynamic change of the acid soil inorganic fractions content during one year period after the application of the 4 tropical green manures[ Indigofera zollingeriana Miq., Indigofera spicata Forssk, Lablab purpureus( Linn.) Sweet, Alysicarpus vaginalis( Linn.) DC.]. The result indicated that the effect of the different green manures application on the acid soil inorganic phosphorus fractions was different, but as a whole, the application of the green manure could decrease significantly the content of the soil inorganic phosphorus; And the content of the Fe-P and Al-P increased significantly due to the application of the green manures, while the content of the Ca-P and O-P decreased significantly. In addition, the result also indicated that the effect of the green manures application on the acid soil inorganic was different significantly with the application time of the green manures.