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[1]ZHANG Lina,Asenso Evans,ZHANG Luyong,et al.Effects of Tillage Methods on the Physical Characteristics of Red Soil of Upland[J].Research of Soil and Water Conservation,2018,25(03):46-50.

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Effects of Tillage Methods on the Physical Characteristics of Red Soil of Upland

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 25 Number of periods: 2018 03 Page number: 46-50 Column: Public date: 2018-04-10

Title:: Effects of Tillage Methods on the Physical Characteristics of Red Soil of Upland

Author(s):: ZHANG Lina¹, Asenso Evans¹, ZHANG Luyong¹, TIAN Kai¹, YANG Dantong², LI Jiuhao¹; 1. College of Water Conservancy and Civil Engineering, South China Agricultural University, Guangzhou 510642, China;
2. College of Engineering, South China Agricultural University, Guangzhou 510642, China

Keywords:: soil physics; tillage method; conservation tillage; red soil

CLC:: S151.9

DOI:: -

Abstract:: The field experiment was conducted to study the effects of rotary tillage (RT), subsoiling (SS) and no-tillage (NT) on the physical characteristics of red soil of upland in southern China. The effects of tillage methods were studied in a randomized complete block design with three replications. The depth of rotary tillage was 20 cm and the depth of subsoiling was 40 cm. The results showed that RT and SS reduced the soil bulk density and penetration resistance, increased soil porosity, RT mainly reduced the content of 5~10 mm dry soil aggregate, thereby the stability of large aggregates was poor and the soil disturbance was larger; SS resulted in the highest content of 0.25~5 mm aggregates and the good soil agglomeration structure; soil moisture contents decreased in the order:NT > SS > RT; SS significantly improved the deep soil structure, and then improved the soil water storage capacity. The soil bulk density and penetration resistance increased, whilst the porosity decreased with the increase of soil depths. The soil bulk density of each treatment increased, and the porosity decreased after harvest compared with before sowing, the difference among treatments decreased after the growth period. With respect to the soil and production conditions in the study area, SS is considered to be the best way to improve soil physical characteristics.

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