The nutrients content was 17% N, 7% P2O5 and 12% K2O in both CCF and uncoated compound fertilizers (UCF).

• 供试肥料为普通复合肥(N:P_2O_5:K_2O=17%25:7%25:12%25)和包膜控释复合肥(N:P_2O_5:K_2O=17%25:7%25:12%25，包膜剂为高分子化合物)。