HA有机—无机复混肥中氮磷钾缓释效果的测定  

Determination of the Slow Release Effect of N,P_2O_5,K_2O of HA Organic-inorganic Compound Fertilizer

作　　者：张卫国[1] 牛少莉[1] 宋爱君[1] 

机构地区：[1]河北科技师范学院化学系,河北秦皇岛066600

出　　处：《河北科技师范学院学报》2005年第2期5-8,共4页Journal of Hebei Normal University of Science & Technology

摘　　要：为确定HA有机—无机复混肥中氮、磷、钾元素的缓释效果,采用土柱淋溶试验测定了自制的HA有机—无机复混肥中N,P2O5,K2O的释放速率。结果表明,HA有机—无机复混肥与普通无机复混肥相比具有明显的缓释效果。淋溶7次后,普通无机复混肥淋溶液中的N,P2O5,K2O含量均远小于HA有机—无机复混肥淋溶中的N,P2O5,K2O含量。In order to determine the slow release-effect of N,P_2O_5,K_2O of HA organic-inorganic compound fertilizer,the rate of release of N,P_2O_5,K_2O was first determined using a leaching method applied to the soil column. The results show that HA organic-inorganic compound fertilizer has the clear effect of a slow release compared with the NPK compound fertilizer.After seven leachings,the content of N,P_2O_5,K_2O in the leaching liquor of the NPK compound fertilizer were far smaller than that of the HA organic-inorganic compound fertilizer.

关 键 词：HA 有机-无机复混肥 氮磷钾 缓释效果 

分 类 号：S143.6[农业科学—肥料学]