Effect of different combination of NPK on yield and quality of Brassica napus L

摘要

Huayouza No.6 was used to study the effect of four NPK combinations on yield and quality of field-grown Brassica napus.The result showed that the highest yield reached 2625 kg/hm2 under the NPK combination of 1:0.4:0.6, which was significantly higher than that under the combination of 1:0.4:0.7. The highest oil content was also gained under 1:0.4:0.6 and the lowest appeared under 1:0.5:0.7, however no significant difference was existed among the four combinations. On the contrary, the highest protein content was realized under 1:0.5:0.7 and the lowest was under 1:0.4:0.6, but no significant difference was also detected. What's more, the economic coefficient was the highest under 1:0.4:0.6.