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Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (31): 56-61.doi: 10.11924/j.issn.1000-6850.2014-2462

Special Issue: 园艺

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Impact of Controlled Release Fertilizers on Yield, Economic Returns and Soil Nmin of Cabbage

曹兵,,, and   

  • Received:2014-09-11 Revised:2015-10-16 Accepted:2015-08-11 Online:2015-11-16 Published:2015-11-16

Abstract: In order to study the reasonable application method of controlled release fertilizer, field demonstration experiment was conducted to study effects of controlled release fertilizers blended with soluble fertilizers on yield, quality and economic returns of cabbage. The results showed that, in comparison with conventional N fertilization with basal application and 2 topdressings, the cabbage yield with controlled release fertilizer with 20% N rate reduction and single basal application increased by 6.1% and the nitrogen use efficiency (NUE) increased by 11.5 percentage point. Nitrate content of cabbage with controlled release fertilizer decreased by 8.8% compared with that under conventional fertilization. Net economic returns of cabbage with controlled release fertilizers increased by 2802 yuan/hm2 compared with that under conventional fertilization, though N input of the former was increased by 75 yuan/hm2. Nitrate leaching and accumulation under 40 cm soil layer with controlled release fertilizers was dramatically reduced compared with that under conventional fertilization.