| Effects of different tillage modes on soil hydrothermal condition, organic carbon content and broad bean yield in purple soil hilly region of Southwest China |
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| DOI：10.7606/j.issn.1000-7601.2018.04.10 |
| Key Words: tillage modes ridge tillage straw mulching hydrothermal condition soil organic carbon yield of broad bean |
| Author Name | Affiliation | | CHEN Jiao | College of Agronomy and Biotechnology, Southwest University/Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education / Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing 400716, China | | HUANG Zhao-cun | College of Agronomy and Biotechnology, Southwest University/Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education / Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing 400716, China | | XIONG Ying | College of Agronomy and Biotechnology, Southwest University/Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education / Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing 400716, China
College of Agriculture, Henan University of Science and Technology, Luoyang， Henan 471003, China | | WANG Long-chang | College of Agronomy and Biotechnology, Southwest University/Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education / Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing 400716, China | | MA Shu-min | College of Agronomy and Biotechnology, Southwest University/Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education / Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing 400716, China | | XING Yi | College of Agronomy and Biotechnology, Southwest University/Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education / Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing 400716, China | | ZHANG Xiao-duan | College of Agronomy and Biotechnology, Southwest University/Key Laboratory of Eco-Environments in Three Gorges Reservoir Region, Ministry of Education / Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing 400716, China |
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| Abstract: |
| The field trial was conducted in the experimental farm in Southwest University in Beibei, Chongqing, China, with six treatments including T (Traditional tillage), R (Ridge tillage), TS1 (Traditional tillage + half amount of straw mulching), RS1 (Ridge tillage + half amount of straw mulching), TS2 (Traditional tillage + whole amount of straw mulching), and RS2 (Ridge tillage + whole amount of straw mulching), so as to investigate the effects of different tillage modes on soil hydrothermal condition, organic carbon content and yield of broad bean and the correlations between them. The main conclusions were as follows: (1)Soil temperature under straw mulching wass significantly higher than traditional tillage in cold days, while significantly lower than traditional tillage in hot days. However, there was no remarkable difference between ridge tillage and traditional tillage. During seedling stage, branch stage, blooming stage and mature stage, soil water content under RS2 treatment was significantly higher than under R treatment; and soil water content with TS2 treatmentwas significantly higher than with T treatment during branch stage, blooming stage and mature stage. (2)Ridge tillage and straw mulching could increase the content of soil organic carbon, and the content ranked as RS2>TS2>RS1>TS1>R>T. (3)Ridge tillage and straw mulching could increase the yield of broad bean. Comparing with T, the treatments of R, TS1, RS1, TS2 and RS2 increased the yield by 3.55%, 9.20%, 9.88%, 10.78% and 12.54%, respectively. (4) Soil organic carbon and broad bean yield were significantly positively correlated with each other. |
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