Effects of coated compound fertilizer on rape yield, biomass and nutrient accumulation

A field plot experiment was carried out to test impacts of coated compound fertilizer on the yield,biomass and nutrient accumulation of rape, which is named by ‘Xiangzayou 1613'. The results suggested that: coated compound fertilizer could increase rape yields,improve its quality and ripening rate. The yield could reach 2 342.49 kg/hm2,which increased by 114.79% compared with that of CK and 10% with that of ordinary urea fertilizer. The thousand grain weight reached 4.9 g, which is higher 9.9% than that of CK. The average number of pod grains reach 16.94, which increased by 28.9% compared with that of CK. Coated compound fertilizer had a significant impact on soil fertility, and could regulate the transfer direction of photosynthetic materials to some extends, moreover, it could effectively promote the early-growth of roots. The utilization rate of nitrogen, phosphorus and potassium in coated compound fertilizer could reach 45.04%,17.38%,72.20%,and increased by 11.98%,26.02%,25.52% compared with those of ordinary fertilizer, respectively.