HA复合肥的养分释放运移特点与土壤培肥效应研究

Study on nutrient release and movement and soil fertility applied by humic acid compound fertilizer

采用盆栽试验与室内土柱模拟试验方法 ,研究了腐植酸复合肥中的养分在土体中的释放运移特点以及对土壤的培肥效应。盆栽试验结果表明 ,与等养分无机肥相比 ,施用腐植酸复合肥不仅可提高辣椒产量 ,而且辣椒收获后土壤中的养分含量均有所提高 ,尤以对土壤中速效磷含量的影响最为显著 ;土柱模拟试验结果表明 ,自制腐植酸复合肥处理各土层中的氮素含量均低于等养分无机肥以及山东产腐植酸复混肥处理。在相同时间内 ,氮素释放总量比二者分别降低 58 3 4 %和 48 78%。 0～ 10cm土层中的磷素含量以山东产腐植酸复混肥处理为最高 ,而在 10～ 3 0cm土层中则以自制腐植酸复合肥处理最高 ,3 0～ 60cm土层中 ,各处理之间差异不显著。

The experiment was conducted to study on nutrients release and movement and soil fertility applied by humid acid(HA)compound fertilizer. The result of pot experiment showed that not only the yield of pepper was increased,but also the contents of organic material ,available N and available P of soil were increased applied by HA compound fertilizer than those applied by equal nutrients of inorganic fertilizer.The effect on contents of available P was the most significant among them. The result of soil column simulated test showed that compared to inorganic fertilizer and HA compost fertilizer made from Shandong, the contents of available N treated by HA compound fertilizer made by ourselves in per soil layer were all decreased significantly. In the meantime, the total quantity of released N was decreased by 58 34% and 48 78%, respectively. The contents of available P treated by HA compost fertilizer from Shandong was the highest in the 0～10 cm layer. But in the 10～30 cm layer, the contents of available P applied by HA compound fertilizer made by ourselves was the highest. There were no significant differences among three fertilizers in the 30～60 cm layer of soil.