“庄稼汉”有机腐殖酸液肥是一种植物活性有机营养素,几年来,通过在苹果树上的试验和推广,取得了良好施用效果。一、最佳施用时期 1.果树现蕾期或幼果期作追肥,地下沟施1次,施用浓度300倍液,每株用量30～50毫升,同时用400倍液对 “Crop Han ” Organic humic acid liquid fertilizer is a plant active organic nutrients, the past few years, through the apple tree in the test and promotion, and achieved good results. First, the best application period 1. Fruit budding stage or young fruit stage for topdressing, underground ditch Shi 1, the application concentration of 300 times the liquid, the amount of 30 to 50 ml per plant, with 400 times the liquid at the same time