摘要
【目的】探索不同农作方式对阿克苏地区土壤物理性质的影响。【方法】在阿克苏地区采集小麦地、单作枣园、枣麦间作园、荒地单作枣园、撂荒地等5种典型的农作方式下的土壤,通过野外调查和室内分析,研究其主要物理特性。【结果】与农田小麦地和撂荒地相比,枣园和枣麦间作园土壤容重降低,土壤孔隙度、团聚体稳定性、土壤含水量均有相应的提高;不同农作方式下土壤湿筛团聚体组成均以2~0.25 mm的中间团聚体为主,含量达38.95%~53.74%。农田改建为枣园或枣麦间作园后>0.25 mm的土壤团聚体含量显著增加(P<0.05),土壤MWD与GMD均表现为增加。撂荒地改建为枣园后,土壤粉+黏团聚体含量下降了5.25%~43.86%。土壤大团聚体、中间团聚体和微团聚体含量则表现为上升,上升幅度分别为9.07%~64.92%、0.49%~4.19%和0.72%~20.11%。【结论】与农田小麦地和撂荒地相比,枣园和枣麦间作园均有利于土壤团聚体的稳定,可促进土壤形成良好结构。
【Objective】The present paper aimed to explore the impact of different farming methods on soil physical properties in Aksu area.【Method】The soil under five typical farming methods including wheat field,single-cropping jujube orchard,jujube-wheat intercropping garden,wasteland single-cropping jujube orchard,and abandoned land were collected in Aksu area,and the main physical characteristics were studied through field investigation and indoor analysis.【Result】Compared with farmland wheat fields and abandoned land,the soil bulk density of jujube orchard and jujube-wheat intercropping orchard is reduced,and soil porosity,aggregate stability,and soil moisture content are correspondingly improved;soil wet sieve aggregate composition under different farming methods.They are mainly 2-0.25 mm intermediate aggregates,with a content of 38.95%-53.74%.After the farmland was converted into a jujube orchard or a jujube-wheat intercropping orchard,the content of soil aggregates over 0.25 mm increased significantly(P<0.05),and both soil MWD and GMD showed an increase.After the abandoned land was converted into a jujube orchard,the content of soil powder+clay aggregates dropped by 5.25%-43.86%.The content of soil macroaggregates,intermediate aggregates and microaggregates showed an increase,with the increasing range of 9.07%-64.92%,0.49%-4.19%and 0.72%-20.11%,respectively.【Conclusion】Compared with farmland wheat fields and abandoned land,jujube orchards and jujube-wheat intercropping gardens are beneficial to the stability of soil aggregates and can promote the formation of good soil structure.
作者
丛小涵
王卫霞
CONG Xiao-han;WANG Wei-xia(Key Laboratory of Forestry Ecology and Industrial Technology,Xinjang Education Department/College of Forestry and Horticulture,Xin-jiang Agricultural University,Xinjiang Urumqi 830052,China)
出处
《西南农业学报》
CSCD
北大核心
2021年第10期2123-2129,共7页
Southwest China Journal of Agricultural Sciences
基金
国家自然科学基金项目“南疆盆地不同农作方式对土壤有机碳库的影响”(31760199)。
