摘要
为研究残塬沟壑区苹果园不同果农复合模式下土壤理化性质和水源涵养功能并筛选出水源涵养功能主导因素。以陕西省马坊塬果-荒(M0)、果-草(M1)、果-蔬(M2)、果-粮(M3)4种果农复合经营模式苹果园为研究对象,对比4种果农复合模式土壤理化特征差异性,并评估果农复合模式对土壤水源涵养功能指数的影响。使用逐步回归分析和通径分析探讨影响土壤水源涵养功能的主导因素。结果表明:生草处理、果蔬间作、果农间作下果园土壤容重、孔隙度、持水能力、养分含量等理化性质优于人工除草样地。其中生草处理、果蔬间作、果农间作土壤容重分比人工除草别降低了15.13%,11.84%,11.18%;有机质含量增加了143.76%,7.14%,120.46%。各果农复合模式下土壤水源涵养功能指数大小依次为M1(0.64)>M3(0.59)>M2(0.51)>M0(0.38)。逐步回归分析表明,总孔隙度、容重和有机质含量是影响土壤水源涵养功能的主要因子,3个土壤因子可解释土壤水源涵养功能指数变异量的95%。通径分析表明,总孔隙度是影响土壤水源涵养功能的主要决策因素,容重是影响土壤水源涵养功能的主要限制因子。研究结果可为残塬沟壑区苹果园可持续土壤管理的选择提供科学依据。
In order to study the effect of different fruit-crop compound managements on soil physiochemical properties and soil-water conservation in apple orchard in the gully region of plateau,and to screen dominant factors for soil-water conservation,four fruit-crop compound managements including artificial weeding(M0),Malus-Trifolium(M1),Malus-Wild(M2)and Malus-Zea(M3)were set up as treatments in Mafang plateau,Shaanxi Province.The differences on soil physiochemical characteristics under the treatments of four fruit-crop compound managements were compared and the soil-water conservation function was evaluated.Stepwise regression analysis and path analysis were used to explore the dominant factors affecting soil-water conservation function.The results showed that the soil physiochemical properties,such as soil density,porosity,water-holding capacity,and nutrient content in M1,M2 and M3 were higher than those of the artificial weeding plots.Among them,the soil bulk density scores of M1,M2 and M3 were reduced by 15.13%,11.84%and 11.18%,respectively,compared with the artificial weeding plot.The organic matter contents increased by 143.76%,7.14%and 120.46%,respectively.Soil-water conservation function for four fruit-crop managements was ranked as M1(0.64)>M3(0.59)>M2(0.51)>M0(0.38).Stepwise regression analysis showed that total porosity,bulk density and organic matter content were the main factors affecting soil-water conservation function.Three soil factors could explain 95%of the variation of soil-water conservation function.Path analysis showed that total porosity was the main deciding factor,and bulk density was the main limiting factor of soil water conservation function.The results of this article could provide a scientific basis for the selection of sustainable soil management in apple orchards in the gully region of plateau.
作者
孟凡旭
王树森
秦富仓
马迎梅
罗于洋
王迪海
刘静
孙耀文
MENG Fanxu;WANG Shusen;QIN Fucang;MA Yingmei;LUO Yuyang;WANG Dihai;LIU Jing;SUN Yaowen(College of Desert Control Science and Engineering,Key Laboratory of Aeolian Physics and Desertification Engineering,Key Laboratory of Desert Ecosystem Conservation and Restoration,State Forest Administration of China,Inner Mongolia Agricultural University,Hohhot 010018;College of Forestry,Northwest Agriculture and Forestry University,Yangling,Shaanxi 712100)
出处
《水土保持学报》
CSCD
北大核心
2020年第5期192-199,共8页
Journal of Soil and Water Conservation
基金
国家重点研发计划项目(2017YFC0504605)。
关键词
残塬沟壑区
果农复合模式
土壤理化性质
水源涵养功能
通径分析
主导因素
gully region of plateau
fruit-crop compound management models
soil physiochemical properties
soil-water conservation function
path analysis
dominant factor
