首页|Subsoil tillage enhances wheat productivity,soil organic carbon and available nutrient status in dryland fields

Subsoil tillage enhances wheat productivity,soil organic carbon and available nutrient status in dryland fields

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  • 国家科技期刊平台
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Tillage practices during the fallow period benefit water storage and yield in dryland wheat crops.However,there is currently no clarity on the responses of soil organic carbon(SOC),total nitrogen(TN),and available nutrients to tillage practices within the growing season.This study evaluated the effects of three tillage practices(NT,no tillage;SS,subsoil tillage;DT,deep tillage)over five years on soil physicochemical properties.Soil samples at harvest stage from the fifth year were analyzed to determine the soil aggregate and aggregate-associated C and N fractions.The results indicated that SS and DT improved grain yield,straw biomass and straw carbon return of wheat compared with NT.In contrast to DT and NT,SS favored SOC and TN concentrations and stocks by increasing the soil organic carbon sequestration rate(SOCSR)and soil nitrogen sequestration rate(TNSR)in the 0-40 cm layer.Higher SOC levels under SS and NT were associated with greater aggregate-associated C fractions,while TN was positively associated with soluble organic nitrogen(SON).Compared with DT,the NT and SS treatments improved soil available nutrients in the 0-20 cm layer.These findings suggest that SS is an excellent practice for increasing soil carbon,nitrogen and nutrient availability in dryland wheat fields in North China.

tillagedryland wheat fieldssoil aggregate sizesoil nutrientssoil carbon and nitrogen fractions

Qiuyan Yan、Linjia Wu、Fei Dong、Shuangdui Yan、Feng Li、Yaqin Jia、Jiancheng Zhang、Ruifu Zhang、Xiao Huang

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Institute of Wheat Research,Shanxi Agricultural University,Linfen 041000,China

State Key Laboratory of Sustainable Dryland Agriculture(in preparation),Shanxi Agricultural University,Taiyuan 030031,China

College of Resources and Environment,Shanxi Agricultural University,Taigu 030801,China

Jiangsu Key Lab and Engineering Center for Solid Organic Waste Utilization,National Engineering Research Center for Organic-based Fertilizers,Nanjing Agricultural University,Nanjing 210095,China

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Joint Funds of the National Natural Science Foundation of ChinaNational Key Research and Development Program of ChinaState Key Laboratory of Integrative Sustainable Dryland Agriculture(in preparation)Shanxi Agricultural University,ChinaOpen Fund from the State Key Laboratory of Soil Environment and Nutrient Resources of Shanxi Province,China

U22A206092021YFD1901102-4202003-32020002

2024

10.1016/j.jia.2023.06.011

农业科学学报(英文)
中国农业科学院农业信息研究所

农业科学学报(英文)

CSTPCD
影响因子：0.576
ISSN：2095-3119
年,卷(期)：2024.23(1)
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