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[1]FANG Kaikai,ZHANG Zhongkai,WANG Zhikang,et al.Grey Relational Analysis of Soil Moisture Under Different Management Measures in Orchards of Weibei[J].Research of Soil and Water Conservation,2016,23(04):28-32.

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Grey Relational Analysis of Soil Moisture Under Different Management Measures in Orchards of Weibei

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 04 Page number: 28-32 Column: Public date: 2016-04-28

Title:: Grey Relational Analysis of Soil Moisture Under Different Management Measures in Orchards of Weibei

Author(s):: FANG Kaikai¹, ZHANG Zhongkai¹, WANG Zhikang¹, LI Huike^1,2; 1. College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China, Ministry of Agriculture, Yangling, Shaanxi 712100, China

Keywords:: apple orchard; soil moisture content; grey relational analysis; land use type; weibei

CLC:: S152.7

DOI:: -

Abstract:: In order to investigate soil moisture profile and seasonal variation characteristics, based on the method of grey correlation analysis, we analyzed the vertical and monthly dynamic change of soil moisture content under 3 land use types of apple orchard in Weibei in the Loess Plateau. The results showed that the vertical change of soil moisture content under different land use types were quite different. In deep layer (120—160 cm) and bottom layer(160—200 cm), the variation of soil moisture was highly accordant, and the change of soil moisture development trend was consistent with an order of clear tillage > grassland > straw mulch land. Grey relational grade of the all land uses between top layer (0—40 cm) and shallow layer (40—80 cm) was less, which meant that soil moisture varied remarkably. In clear tillage, grey correlation degrees of soil moisture between June to July and May were at the middle level, however, remarkable difference was found in August. In grassland, grey correlation degree of soil moisture was high during the period from June to August, and the fluctuation of soil moisture in growth season was great with the change trend of high—low—high—low—low—high. Grey correlation degrees of soil moisture between June to July and May were at the high level in straw mulch land, however, the variation trend of soil moisture in other months was low. The method of grey correlation analysis can be used to ideally identify the dissimilarity or similarity of soil moisture content change under different land use types.

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