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[1]CHEN Xiaoqiang,FAN Maopan,WANG Zilin,et al.Effect of Crop Root on Soil Strength in Different Cropping Patterns[J].Research of Soil and Water Conservation,2017,24(05):144-148,156.

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Effect of Crop Root on Soil Strength in Different Cropping Patterns

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 24 Number of periods: 2017 05 Page number: 144-148,156 Column: Public date: 2017-10-28

Title:: Effect of Crop Root on Soil Strength in Different Cropping Patterns

Author(s):: CHEN Xiaoqiang^1,2, FAN Maopan¹, WANG Zilin¹, DU Jing¹, LI Yongmei¹; 1. College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China;
2. Kunming Jiaxiao Water Supply Engineering Technology Co. Ltd., Kunming 650231, China

Keywords:: intercropping; maize; soybean; root system; soil fixing capability

CLC:: S152.9;S157.4⁺33

DOI:: -

Abstract:: Studies on the effect of the maize-soybean intercropping system on soil loss are highly concentrated on aboveground, while there are little researches on soil fixing capability of root character of maize-soybean intercropping. We examined the biomass and soil fixing capability of roots in maize-soybean intercropping (MD), maize monoculture(MM), soybean monoculture(DD) and bare land(CK) on slope cropland by using the field runoff plot experiment. The results show that maize root density of MD treatment is 19.64% higher than MM treatment. The difference is significant between MD, MM and CK treatment in the depth of 10—20 cm(p < 0.05), MD treatment increased by 4.25% and 4.84%, respectively, compared with MM and CK, increased by 2.49% and 15.85% in the depth of 0—10 cm, and increased by 1.56% and 6.25% respectively in the depth of 20—30 cm. Compared with MM treatment, the above-ground fresh biomass of MD increased by 2.46%, and 5.06% in the underground part, the biomass of dry weight increased by 7.31%, and 3.17% in the underground part. In the range of 0—30 cm soil moisture can be effectively maintained and soil water content can be improved. MD treatment has greater soil fixing capability than other treatments in maize quadrat or soybean quadrat. The displacement of soil of the intercropping is shorter than monoculture under the same load.

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