Fertilization scheme of safe，quality and high yield of lowering Chinese cabbage

A“ 3414” field experiment was carried out to study fertilizer effects of nitrogen，phosphorus and potassium on flowering Chinese cabbage yield and quality in Zhanjiang. The results showed that yield of N2P2K2 treatment was the highest. The yield of Flowering Chinese cabbage first increased and then decreased with the increase nitrogen，phosphorus and potassium，application would reduce remarkably when the amount of nitrogen， phosphorus and potassium was deficiency and excess，was most sensitive to phosphorus consumption，followed by nitrogen. The soluble sugar of flowering Chinese cabbage would reduce remarkably when no nitrogen and excessive potassium，was mainly affected by nitrogen and potassium fertilizer. The nitrate of flowering Chinese cabbage would increase remarkably when excessive nitrogen，phosphorus and no phosphorus，would reduce with amount of potassium increasing，was most sensitive to phosphorus consumption，followed by nitrogen. Recommended fertilization scheme of flowering Chinese cabbage safe，quality and high yield was N 7.30 kg/667 m2，P2O5 2.40 kg/667 m2 and K2O 4.00 kg/667 m2. The yield was 1 964.34 kg/667 m2，the content of nitrate was 97.641 mg/kg， the soluble sugar was 11.69 mg/kg.