The Effect of Fertilization on Tomato Yield and Quality in Solar-greenhouse

Different amount of N, P, K were tested on potted tomato, the results showed that the proportion of N, P K application obviously affects tomato output and quality. According to the test, when 375 kg N, 150 kg P_2O_5 300 kg K_2O were applied per hm~2, the yield of tomato were the highest of the test. When N increased moderately, soluble carbohydrate increased reasonably. With the same level of N, the content of Vc tends to be increased while the organic acid decreased along with the increase of P K.