关键词: 色素, 色素, 单次浸出率, 累积浸出率, 色差

Abstract: In order to explore the application effect of sulfur coated fertilizer in Anqiu, three fertilization treatments of sulfur coated fertilizer were tested taking chlorine containing compound fertilizer as control. The results showed that, after the application of sulfur coated fertilizer, the ginger leaf color was green in late growth stage, the stem was stout, the growing was strong, the wane in late stage was not serious, and the disease was mild. The fresh ginger weight of different sulfur coated fertilizer treatments were 3214.5-9558.0 kg/hm2 more than that of the control, and the ginger production were 6675.0-10627.5 kg/hm2 more than that of the control. The output value was 24030.0-38259.0 yuan/hm2 more than that of the control, and the difference reached significant level. After using sulfur coated fertilizer, the ginger input-output ratio was significantly increased. The output value of the sulfur coated compound fertilizer treatment which had the same NPK as the control was the most obvious. The input output ratio of the treatment which had 20% sulfur coated urea and 80% ordinary urea was the largest. Therefore, the effect of sulfur coated fertilizer on ginger yield is obvious.