Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (30): 34-37.doi: 10.11924/j.issn.1000-6850.2014-0998

Special Issue: 油料作物 园艺

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Effects of Nitrogen Application Depth on Yield and Nutrient Utilization of Rapeseed

  

  • Received:2014-04-08 Revised:2014-04-08 Accepted:2014-07-23 Online:2014-10-31 Published:2014-10-31

Abstract: In order to take full advantage of nitrogen,the field experiment was conducted to study effects of N fertilization depth (4, 8, 12, 16 cm) on rapeseed yield, nutrient uptake and utilization. The results showed that rapeseed yield decreased in the order of N16>N12>N8>N4. The highest yield of 3383 kg/hm2 was reached at the treatment N16, and it was significantly higher than that of treatment N4. The increase of N fertilization depth could promote nutrient absorption and utilization of rapeseed significantly. Nitrogen recovery efficiency and agronomic use efficiency of treatment N16 were notably higher than that of treatment N4 and N8. Under the condition of this experiment, the optimal N fertilizer application depth was 16 cm.