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Acta Agron Sin ›› 2009, Vol. 35 ›› Issue (1): 87-92.doi: 10.3724/SP.J.1006.2009.00087

• TILLAGE & CULTIVATION · PHYSIOLOGY & BIOCHEMISTRY • Previous Articles     Next Articles

Effect of Nitrogen,Phosphorus,Potassium and Boron Fertilizers on Yiedl and Profit of Rapeseed(Brassica napus L.)in the Yangtze River Basin

ZOU Juan1,LU Jian-Wei1,CHEN Fang2,LI Yin-Shui1   

  1. 1College of Resources and Environment,Huazhong Agricultural University,Wuhan 430070,China;2Botanical Garden of Wuhan/Wuhan Institute of Botany,Chinese Academy of Sciences,Wuhan 430074,China
  • Received:2008-05-23 Revised:2008-09-09 Online:2009-01-12 Published:2008-11-17
  • Contact: LU Jian-Wei

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Abstract:

Field experiments were conducted at 32 sites in 10 main rapeseed production provinces along the Yangtze River Basin during 2006–2007. The objective of the research was to investigate the effect of nitrogen (N), phosphorus (P), potassium (K), and boron (B) on rapeseed yield and profit. The results showed that the combination application of N, P, K and B (NPKB) increased the yield of rapeseed significantly. The average yield of NPKB treatment was 2 590 kg hm-2, which was 1 055, 727, 253, 337 and 639 kg hm-2 higher than those of PKB, NKB, NPB, NPK and FFP (farmers’ fertilizer practice) treatments, respectively. N, P, K and B effect on the rapeseed yield ranked as N > P > K≈B. The seed yield increment from P, K and B application had negative relationship with soil available P, K and B content, respectively. Compared with PKB, NKB, NPB and NPK treatments, profit of NPKB increased 2868, 2 139, 434, and 1 076 Yuan hm-2. The average profit of NPKB treatment was up to 7 274 Yuan hm-2 according to the fertilizer and rapeseed prices in 2006 and 2007. However, the effects of N, P, K and B fertilizer on yield and profits of rapeseed were not the same in different experimental sites. The 87.5 percent trials showed significant profits from N and P fertilization, and half of the total trials showed high benefit from K application, which the value to cost ratio (VCR) was higher than 2.0. It was concluded that the combination of N, P, K and B fertilizers significantly increased both rapeseed yield and profits.

Key words: Rapeseed, Nitrogen, Phosphorus, Potassium, Boron, Yield, Profit

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