Study on the Fertilization Effect and Nutrient Management for Direct Seeding Rapeseed in China


Besides its use as an important edible oil and feed crop, rapeseed is also a promising bio-diesel crop. China has been the largest producer of rapeseed with an annual planting area of more than seven million hectares and annual production of more than ten million tons since 1999. Rapeseed has developed from a marginal crop in the founding period into the fourth most important crop (after rice, wheat and maize), and has become the most predominant oilseed crop in China. Read more

Year of initiation:2010
Year of completion:2013

Interpretive Summary


A 10-year study conducted with the support of IPNI China Program, Huazhong Agricultural University demonstrated the positive impact of nutrient management on the productivity of oilseed rape in China. The results of soil investigation showed that soil pH that decreased slightly from 6. 6 to 6. 4, while the soil organic matter (SOM) and available N, P, K, and B contents in the main winter oilseed rape-planting regions of China were increased over the last four decades.


This project was implemented by Huazhong Agricultural University. A total of 17 on-farm trials on winter rapeseed fertilization were conducted in seven provinces along the Yangtze River basin in 2012. Nitrogen fertilization trials were located at 10 sites, while P and K fertilization trials were conducted at the other seven sites. Five N fertilization rates were evaluated along with applications of 90 kg P2O5, 120 K2O and 15 kg/ha borax.

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