木质素复合肥的研制及其对肥料氮磷有效性的影响

Development of Lignin Fertilizer and Its Effect on Availabilities of N Fertilizer and P Fertilizer

利用造纸黑液中回收的木质素与常规化肥复配合成了木质素复合肥,并研究了该肥料对NP有效性的影响。经脲酶活性测定及土柱渗滤实验表明,该肥料能降低脲酶活性,减少土壤对磷的固定,提高肥料的利用效率,减轻因常规化肥施用对生态环境的影响。

Lignin as a material recovered from pulping black liquor was used to make compound fertilizer with common chemical fertilizer.An experiment of urease activity and leaching from soil colu mn showed that the fertilizer could r educe urease activity and the fixation of P content.It decreased pollution of chemical fertilizer and improve agro -environmental pro tection by increasing use efficiency of fertilizer.