控失剂对铵态氮溶出特性的影响

在普通肥料氯化铵中按一定比例加入控失剂(即高分子复配材料)可以控制铵态氮的渗透流失.以砂子为介质,通过淋溶试验,研究了控失剂添加量对铵态氮溶出率的影响和添加15%控失剂的氯化铵及普通氯化铵的溶出特性.结果表明:随着控失剂添加量的增加,铵态氮溶出率逐渐降低;与普通肥料相比,添加15%控失剂可以减少35%铵态氮的流失,能很好的控制铵氮对环境的污染,提高铵氮利用率.

Research on the Effect of Eertilizer lose Control Agent on Ammonium-N Aelease Characteristic

To control the penetration lose of ammonium-N,a fertilizer lose control agent is mixed into ordinary fertilizer ammonium chloride pro rata.By eluviation experiment,the effect of additive quantity of fertilizer lose control agent on the ammonium-N release rate was studied in the medium of sand;while the release characteristic of ammonium chloride mixed with fertilizer lose control agent of 15% additive quantity and the release characteristic of ordinary ammonium chloride are studied respectively.Results show that ammonium-N release rate decrease with the increase of the quantity of fertilizer lose control agent and compared to ordinary fertilizer,the fertilizer lose control agent of 15% additive quantity reduce ammonium-N lose by 35%,which means the fertilizer lose control agent can control the environment pollution induced by ammonium-N lose effectively and enhance the utility rate of ammonium-N.