Retention fertilizer assistant and retention fertilizer preparation method

The invention discloses a retention fertilizer assistant and a retention fertilizer preparation method thereof. The retention fertilizer preparation method mainly comprises the following steps: preparing 75 to 85 percent of an adsorbent, 6 to 10 percent of an adhesive, 4 to 15 percent of active organic carbon and 5 to 10 percent of an medium-trace element inhibitor into the retention fertilizer assistant according to certain proportions, adding fertilize and the retention fertilizer assistant into a pelletizer, fully and uniformly mixing, and pelleting, thus preparing retention fertilizer. 本发明公开了种保持性肥料助剂及其肥料制备方法，主要包括将吸附剂:75％-85％，粘结剂:6％-10％，活性有机碳:4％-15％，中微量元素的抑制剂:5％-10％按照定比例做成保持性肥料助剂，将肥料、保持性肥料助剂按比例加入到造粒机内，充分混合均匀后，经造粒，制成保持性肥料。