秸秆还田与化肥配施对汉中盆地稻麦轮作农田土壤固碳及经济效益的影响

吴玉红,郝兴顺,田霄鸿,陈浩,张春辉,崔月贞,秦宇航

Effect of straw returning combined with NPK fertilization on soil carbon sequestration and economic benefits under rice-wheat rotation in Hanzhong basin

Yu-Hong WU,Xing-Shun HAO,Xiao-Hong TIAN,Hao CHEN,Chun-Hui ZHANG,Yue-Zhen CUI,Yu-Hang QIN

表2 不同秸秆还田下的土壤有机碳和活性有机碳含量

Table 2 Contents of TOC and LOC under different straw return treatments

处理 Treatment 0-15 cm 15-30 cm 土壤有机碳 TOC (g kg-1) 土壤活性有机碳 LOC (g kg-1) 土壤有机碳 TOC (g kg-1) 土壤活性有机碳 LOC (g kg-1) SN+NPK 10.49 e 2.65 e 5.51 c 2.08 c S+NPK 12.25 b 3.82 b 5.85 b 2.51 b SD+NPK 13.12 a 3.89 a 6.53 a 2.95 a SD+85%NPK 11.87 c 3.67 c 4.87 d 1.59 d SD+70%NPK 10.87 d 3.26 d 4.74 d 1.50 e