文献类型： 外文期刊

作者： Huan, H. ¹ ; Huang, D. ¹ ; Liu, G. ¹ ; Dong, R. ¹ ;

作者机构： 1.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Inst, Key Lab Crop Gene Resources & Germplasm Enhanceme, Minist Agr, Danzhou 571737, Hainan, Peoples R China

2.Hainan Univ, Coll Agron, Danzhou 571737, Hainan, Peoples R China

关键词： exchangeable potassium;green manure microsite;latosol;non-exchangeable potassium;water-soluble potassium

期刊名称：AGROCHIMICA （ 影响因子：0.604； 五年影响因子：0.717 ）

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收录情况： SCI

摘要： To quantify P application effect on the mobilization and transformation of green manure (GM) potassium at the manure microsite, an incubation experiment was conducted. Stylosanthes GM (10 or 40 t ha(-1); GML or GMH) alone or co-applied with MCP (monocalcium phosphate containing 100 kg ha(-1) P2O5) and CK (control, added nothing) were added to soil cylinder surfaces and incubated for 14 and 28 days. The results indicate that K mobilization distance decreased or did not change after MCP addition except for water-soluble K in the GMH treatment and exchangeable K in the GML treatment after 28 d-incubation. Potassium content decreased or did not change after MCP addition except for the water-soluble K in the GMH treatment after 28-d incubation and exchangeable K in the GML treatment after 14 d-incubation. The results suggest that the supply of K from GM could be improved by the reduction of the rapid release in the initial short-term.