The experiment results showed that high quality cultivated techniques of yellow seed and double-low hybrid rapeseed-Youyan No.9 were:the suitable sowing date was September 4～11,the density was 9×10 4 plants per hectare, applied amount of nitrogen, phosphorus and potassium fertilizer were 180?kg,150?kg and 210?kg per hectare respectively. The suitable sowing date of direct sowing was September 25 to October 2. The density was 24×10 4 plants per hectare. Applied amount of nitrogen was 180 kg per hectare. Th...
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