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[1]GE Chang,LIU Huilin,ZHANG Shiwen,et al.Effects of Tillage Methods and Soil Types on Characteristics of Soil Compaction in Rainfed Farmland in Northern Anhui Province[J].Research of Soil and Water Conservation,2018,25(05):89-94.

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Effects of Tillage Methods and Soil Types on Characteristics of Soil Compaction in Rainfed Farmland in Northern Anhui Province

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 25 Number of periods: 2018 05 Page number: 89-94 Column: Public date: 2018-09-06

Title:: Effects of Tillage Methods and Soil Types on Characteristics of Soil Compaction in Rainfed Farmland in Northern Anhui Province

Author(s):: GE Chang¹, LIU Huilin¹, ZHANG Shiwen¹, NIE Chaojia¹, HUANG Yuanfang², DING Xuejiao¹; 1. Anhui University of Science And Technology Earth and Environmental Sciences, Huainan, Anhui 232001, China;
2. China Agricultural University, Beijing 100193, China

Keywords:: soil compactness; tillage methods; soil type; soil bulk density and soil water content

CLC:: S152

DOI:: -

Abstract:: In order to find out the change of cultivated land quality in arid area, and to understand the influence of tillage management mode on farmland quality in dry farming area, dry farming area in Northern Anhui was taken as the research site, the gradient variation of soil compaction at different depths from 0 to 40 cm were studied, and the effects of tillage methods, soil types, soil bulk density and soil water content on soil compaction were revealed. The results show that:on the whole, in the 0-40 cm soil depth, soil compactness increased first and then stabilized with the increase of depth; below 20 cm, the soil compaction was gradually stabilized; the average topsoil depth was 14.14 cm, and the average degree of compaction was 573.63 kPa; from the point of view of farming methods, above 30 cm, the soil compaction of each layer of rotary tillage was greater than that of tillage, the average tillage depth was 12.5 cm, and the average tillage depth was 16.8 cm, which was 1.34 times of that of rotary tillage; from the perspective of soil types, the difference of soil compaction between different soil types was also obvious; the average compaction degree of soil layer in fluvo aquic soil was greater than that in lime concretion black soil, and with the increase of depth, the gap increased gradually; from the impact of factors, soil compaction was positively correlated with soil bulk density changes in both horizontal and vertical directions. The relationship between soil compaction and soil water content is complex. Overall, they are positively correlated in the horizontal direction, and negatively correlated in the vertical direction. The research results will provide a basis for the further study of the soil structure change process and laws, and the change process of the plough layer and plow bottom in arid land, and provide the theoretical support for improving the farmland quality in arid area in northern Anhui.

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