有机肥对旱地红壤供磷效应的研究

A Study on Phosphorus-supplying Effect of Organic Manure on Dry Red Soil

试验研究了施用有机肥对土壤的不同磷形态的影响 ,分析了不同有机肥施用量对土壤各种磷组分的变化。试验结果表明 ,施用有机肥对旱地红壤的速效磷有显著影响 ,并且有机肥对土壤速效磷的影响随其C/P比不同而不同。施用有机肥 ,能增加土壤磷的供应和贮备 ,并能增加作物的吸磷量及产量。

The article is about the efects of organic manure on different morphic phosphorus in dry red soil, the variation of different phosphorus in dry red soil is also studied. The results show that organic manure has great effect on soil instant phosphorus. The effect of organic manure on soil instant phosphorus is different with its C/P. Fertilizing organic manure can increase the supply and store of soil phosphorus, crop's absorption of phosphorus and yield are hence enhanced.