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Combining conservation tillage with nitrogen fertilization promotes maize straw decomposition by regulating soil microbial community and enzyme activities

文献类型：期刊论文

作者Zhang, Houping2,3; Tang, Xueqin3; Hou, Quanming3; Zhu, Yuanpeng1; Ren, Zhangheng3; Xie, Huanxin3; Liao, Yuncheng3; Wang, Weiyan2,3; Wen, Xiaoxia3
刊名PEDOSPHERE
出版日期2024-08-01
卷号34期号:4页码:783-796
关键词hydrolytic enzyme microbial biomass oxidative enzyme straw decomposition velocity tillage practice
ISSN号1002-0160
DOI10.1016/j.pedsph.2023.05.005
产权排序3
英文摘要Straw return can effectively improve farmland soil microenvironment and fertility. However, excessive straw in the topsoil adversely affects seed germination and crop growth. At present, the characteristics and key driving factors of straw decomposition in dry farmlands are unclear. Based on the interactions between tillage practices including zero tillage (ZT), chisel tillage (CT), and plow tillage (PT) and nitrogen (N) fertilization, i.e., low N (N1, 180 kg ha-1), normal N (N2, 240 kg ha-1), and high N (N3, 300 kg ha-1), quantitative polymerase chain reaction technology and an enzymatic detection kit were used to investigate the effects of key straw C-degrading enzyme activities and microbial abundance in soil on maize straw decomposition during the growth period of winter wheat in the winter wheat/summer maize double cropping system in a dry farmland of the Loess Plateau, China. Between 2018 and 2020, ZT and CT significantly increased winter wheat yield (by 10.94% and 12.79%, respectively) and straw decomposition velocity (by 20% and 26.67%, respectively), compared with PT. Compared to N1 and N3, N2 significantly increased wheat yield (by 4.65% and 5.31%, respectively) and straw decomposition velocity (by 26.33% and 13.21%, respectively). The partial least squares pathway modelling showed significant positive direct effects of soil moisture, NO-3, NH+4, total N, bacteria, and cellulase, laccase, and xylanase activities on straw decomposition, while soil pH, fungi, and Actinomycetes had significant negative direct effects. Overall, conservation tillage (ZT and CT) combined with N2 was beneficial for straw decomposition in the drylands of the Loess Plateau and improved straw resource utilization and basic soil fertility. The results of the study clarified the key drivers of straw decomposition in dry farmlands and provided new ideas for developing updated soil management practices and adaptive N application strategies to promote the resource utilization of straw and achieve the goals of carbon peaking and carbon neutrality.
WOS关键词RESIDUE DECOMPOSITION ; LITTER DECOMPOSITION ; PLANT RESIDUES ; CLIMATE-CHANGE ; WHEAT-STRAW ; WATER-USE ; NO-TILL ; MANAGEMENT ; BIOMASS ; TEMPERATE
资助项目National Natural Science Foundation of China[31971860] ; College of Agronomy, Northwest A&F University, China
WOS研究方向Agriculture
语种英语
WOS记录号WOS:001291654900001
出版者SCIENCE PRESS
资助机构National Natural Science Foundation of China ; College of Agronomy, Northwest A&F University, China
源URL[http://ir.igsnrr.ac.cn/handle/311030/209096]  
专题陆地水循环及地表过程院重点实验室_外文论文
通讯作者Wang, Weiyan; Wen, Xiaoxia
作者单位1.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Northwest A&F Univ, Key Lab Crop Physiecol & Tillage Sci Northwestern, Minist Agr, Yangling 712100, Peoples R China
3.Northwest A&F Univ, Coll Agron, Yangling 712100, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Houping,Tang, Xueqin,Hou, Quanming,et al. Combining conservation tillage with nitrogen fertilization promotes maize straw decomposition by regulating soil microbial community and enzyme activities[J]. PEDOSPHERE,2024,34(4):783-796.
APA Zhang, Houping.,Tang, Xueqin.,Hou, Quanming.,Zhu, Yuanpeng.,Ren, Zhangheng.,...&Wen, Xiaoxia.(2024).Combining conservation tillage with nitrogen fertilization promotes maize straw decomposition by regulating soil microbial community and enzyme activities.PEDOSPHERE,34(4),783-796.
MLA Zhang, Houping,et al."Combining conservation tillage with nitrogen fertilization promotes maize straw decomposition by regulating soil microbial community and enzyme activities".PEDOSPHERE 34.4(2024):783-796.

入库方式： OAI收割

来源：地理科学与资源研究所

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