›› 2020, Vol. 32 ›› Issue (7): 1233-1240.DOI: 10.3969/j.issn.1004-1524.2020.07.12

• Environmental Science • Previous Articles     Next Articles

Effect of crop residue compost replacing part of chemical fertilizer and nitrification inhibitor on greenhouse gas emission of winter wheat

WU Chengjie1, REN Lantian1,2,3,*, HAO Bing3, SHAO Qingqin1, WANG Hong1, CHEN Feng1, DAI Gaofeng1, MEI Shiyuan1, ZHANG Congjun2   

  1. 1. College of Agriculture, Anhui Science and Technology University, Fengyang 233100, China;
    2. Anhui Laimujia Biological Technology Co,. Ltd., Key Laboratory of Bio-Organic Fertilizer Creation, Ministry of Agriculture and Rural Affairs, Bengbu 233400, China;
    3. Bengbu Ludu Crop Residue Biotechnology Co., Ltd., Bengbu 233000, China
  • Received:2019-10-17 Online:2020-07-25 Published:2020-07-28

Abstract: In view of the current situation of excessive chemical fertilizer input, low utilization rate and high greenhouse gas emission in winter wheat production along the Huaihe River, the dynamic changes of nitrous oxide (N2O), carbon dioxide (CO2) and methane (CH4) emission flux and its influence on wheat yield and quality were studied under the design of replacing part of chemical fertilizer by crop residue compost in the main area (T) and dicyandiamide (DCD) as the split plot (D). The results showed that the total greenhouse gas emissions of the treatments of 7.5 t·hm-2 crop residue compost replacing 10% chemical fertilizer+60 kg·hm-2 DCD and 15 t·hm-2 crop residue compost replacing 20% chemical fertilizer+60 kg·hm-2 DCD were significantly (P<0.05) lower than those of the traditional fertilization by 19.01% and 31.76%, respectively. Besides, the amylopectin contents in wheat under the above treatments were significantly (P<0.05) increased by 10.00% and 14.00%, respectively. While, there was no significant decrease in wheat yield. Therefore, it was feasible to reduce greenhouse gas emission by replacing part of chemical fertilizer with crop residue compost along with DCD. This method showed no negative effect on wheat yield and was beneficial for greenhouse gas emission reduction and utilization of crop residue.

Key words: crop residue compost, nitrification inhibitor, wheat, greenhouse gases

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