000			03254nab|a22004097a|4500
001			68915
003			MX-TxCIM
005			20250620172405.0
008			25060522022||||ne ||p|op||||00||0|eng|dd
022			_a0048-9697
022			_a1879-1026 (Online)
024	8		_ahttps://doi.org/10.1016/j.scitotenv.2022.156608
040			_aMX-TxCIM
041			_aeng
100	0		_aBo Liu _939167
245	1	0	_a14 year applications of chemical fertilizers and crop straw effects on soil labile organic carbon fractions, enzyme activities and microbial community in rice-wheat rotation of middle China
260			_aNetherlands : _bElsevier B.V., _c2022.
500			_aPeer review
520			_aTraditional fertilization management can damage soil structure and lead to severe soil erosion. The practice of crop straw returning to the field reduces the negative impact of straw burning and improves soil quality. We investigated the effects of these agricultural practices on soil organic carbon components, enzyme activities, and soil microorganisms over 14 years of field experiments. Specifically, we studied four management strategies: no fertilizer or crop straw returning (CK), traditional chemical fertilization (NPK), crop straw returning (S), and crop straw returning with chemical fertilizer (NPKS). We found NPKS treatments significantly (P < 0.05) increased the dissolved organic carbon (DOC), microbial biomass carbon (MBC), particulate organic carbon (POC) and readily oxidized organic carbon (ROC) concentrations by 79.32 %, 82.16 %, 92.46 %, and 104.32 % relative to CK. Furthermore, under NPKS, the activities of soil enzymes related C, N, and P (α-glucosidase (αG), β-glucosidase (βG), cellulase (CBH), xylanase (βX), acetyl β-glucosaminidase (NAG), leucine aminopeptidase (LAP), and acid phosphate (AP)) were increased by 54.66 %, 113.26 %, 76.73 %, 52.41 %, 45.74 %, 56.69 %, and 68.92 % relative to CK, respectively. Redundancy analysis and structural equation modelling showed that straw returning had positive effects on soil microbial community diversity and richness, and also improved microbial activity which is favorable in the degradation of soil carbon. Furthermore, we found that soil fungi were more sensitive than bacteria to changes in soil carbon composition and enzyme activities following straw returning. These results suggest that straw returning combined with chemical fertilizer can be an effective strategy to improve soil labile organic carbon components, enzyme activities, and ecological function of microorganisms.
546			_aText in English
650		7	_aStraw _2AGROVOC _98207
650		7	_aOrganic carbon _2AGROVOC _927120
650		7	_aSoil microorganisms _2AGROVOC _97739
650		7	_aCrop rotation _2AGROVOC _91807
650		7	_aRice _2AGROVOC _91243
650		7	_aWheat _2AGROVOC _91310
651		7	_aChina _2AGROVOC _93990
700	0		_aHao Xia _939172
700	0		_aCuncang Jiang _939173
700	1		_aRiaz, M. _912098
700	0		_aLi Yang _91852
700	1		_aYunfeng Chen _939174
700	0		_aXianpeng Fan _939175
700	0		_aXiange Xia _939176
773	0		_tScience of the Total Environment _gv. 841, art. 156608 _dNetherlands : Elsevier B.V., 2022. _z0048-9697
942			_cJA _n0 _2ddc
999			_c68915 _d68907