| We researched the effects of different nutrient ratios on the growth and yield of rape with total amount of
fertilizer in certain condition using field plot experiment. The results showed that the growth and reproductive of cole were
relatively poor at the higher nitrogen application rate leading to low yield and poor economic returns. The rape would get low
degree of variation and stable growth while the overall growth of rape reached a relatively good level with lower proportion of
N it would obtain high and stable yield finally the yield was 3 207.16 kg/ha increased by 292.51% compared to the
control increased 28.79% compared to the farmers used was significantly higher than other treatments, and economic
benefits also reached the highest. The growth of rape was the best with m (N)(P2O5) (K2O)=14:4:7the yield was slightly
lower than the ratio of nitrogen treatment but the degree of variation was higher and the characters of growth of cole was
instableit was necessary to enhance the spatial and ratio of larger improvement. In conclusion in the six kinds of mixture
ratios the handle of m (N) (P2O5) (K2O)=12:6:7 was advantaged to growth and high yield of rape, and was worth extension in
location. |
