Correct Application of nitrogen Nutrition in rapeseed

It is very important to determine a reasonable amount of nitrogen application in the growth of rape. If the yield of rapeseed is less than 100 kg per mu, the nitrogen consumption of rapeseed per 100 kg is 10.93 kg, while that of more than 150 kg per mu is increased to 12.3 kg. When the application of pure nitrogen per mu reached more than 20 kg, the residual nitrogen in the soil increased significantly and the utilization rate decreased significantly. In terms of yield-increasing efficiency, the application of pure nitrogen of 7 to 14 kg per mu was the highest. In the case of insufficient fertilizer production in a large area, applying about 7.5 kg of pure nitrogen per mu can achieve a larger yield increase and the best economic benefit.