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[1]HUANG Shengjie,CHEN Junpu,CHEN Tao,et al.Effects of Different Coverage Modes on Aggregates and Carbon and Nitrogen of Soil in Cherry Orchard[J].Research of Soil and Water Conservation,2022,29(01):44-50.

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Effects of Different Coverage Modes on Aggregates and Carbon and Nitrogen of Soil in Cherry Orchard

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 01 Page number: 44-50 Column: Public date: 2022-02-20

Title:: Effects of Different Coverage Modes on Aggregates and Carbon and Nitrogen of Soil in Cherry Orchard

Author(s):: HUANG Shengjie¹, CHEN Junpu¹, CHEN Tao², FANG Conggang³, HUANG Chengyi^1,4; (1.College of Water Resources and Hydropower, Sichuan Agricultural University, Ya'an, Sichuan 625014, China; 2.College of Life Science, Sichuan Agricultural University, Ya'an, Sichuan 625014, China; 3.Chengdu Land and Resources Information Center, Chengdu 610041, China; 4.College of Environmental Sciences, Sichuan Agricultural University, Chengdu 611130, China)

Keywords:: aggregate; stability; coverage modes; organic carbon; total nitrogen

CLC:: S152.4; S153.6

DOI:: -

Abstract:: In order to research the effects of different coverage modes on soil aggregates and carbon and nitrogen, the soil samples in the cherry orchard were taken in Xinjin County, and positioning experiment was adopted. Four treatments such as clean tillage(CK), natural grass coverage(NGC), vetch coverage(VC)and ground cloth coverage(GCM)were set up. Distribution of soil aggregates, large aggregates content(R_0.25), mean weight diameter(MWD), geometric mean diameter(GMD), percentage of aggregate destruction(PAD)and unstable aggregate index(E_lt), as well as organic carbon and total nitrogen in water-stable aggregates were tested and analyzed. The results showed that: contents of >5 mm mechanically stable aggregates in the 0—10 cm and 10—20 cm soil layers of natural grass coverage, vetch coverage, ground cloth coverage and clean tillage are the highest, while the contents of >5 mm and 5～2 mm water-stable aggregates are higher; in the two soil layers, compared with clean tillage, natural grass coverage, vetch coverage and ground cloth coverage increase R_0.25, MWD, GMD and decrease PAD and E_lt, increase the organic carbon and total nitrogen contents in water-stable aggregates; the best result of organic carbon improvement was natural grass coverage, the best result of total nitrogen improvement was vetch coverage. In summary, coverage treatments can increase the stability of soil aggregates, the organic carbon and total nitrogen contents of water-stable aggregates, as well as improve soil quality.

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Last Update: 2022-02-20