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[1]WANG An,HAO Ming-de,ZANG Yi-fei,et al.Effects of Straw Mulching and Stubble on Soil and Water Conservation with Corns Planted[J].Research of Soil and Water Conservation,2013,20(01):47-51.

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Effects of Straw Mulching and Stubble on Soil and Water Conservation with Corns Planted

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 20 Number of periods: 2013 01 Page number: 47-51 Column: Public date: 2013-02-28

Title:: Effects of Straw Mulching and Stubble on Soil and Water Conservation with Corns Planted

Author(s):: WANG An¹, HAO Ming-de^1,2, ZANG Yi-fei¹, BAO Yan-jie³; 1. College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712100, China;
2. Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China;
3. College of Agronomy, Northwest A & F University, Yangling, Shaanxi 712100, China

Keywords:: simulation rainfall; soil and water conservation; straw mulch; stubble

CLC:: S157.2

DOI:: -

Abstract:: Experiments under simulation rainfall were conducted to study effects of straw mulch and stubble on soil and water conservation at different growth stages of corn. Results showed that both straw mulch which had much more obvious effects, and stubble would efficiently delay the runoff initiating time and reduce the amount of soil erosion. The effect of straw mulch was most distinct at the jointing stage with the runoff initiating time delayed by 96% compared with CK, the amount of soil erosion reduced by 75%, at the seeding stage and the amount of cumulative runoff was reduced by 15% at the heading stage at the same time. These measures of straw mulch combining with stubble also delayed the runoff initiating time and reduced the amount of soil erosion efficiently at the different growth stages of corn, especially at the jointing stage. The runoff initiating time was delayed by 1.36 times under low straw mulch combining with high stubble, and by 52% under high straw mulch combining with low stubble, meanwhile, the amount of soil erosion was reduced by 85% and 78%, respectively compared with CK at the jointing stage of corn. And at the heading stage, the cumulative amount of runoff was reduced by 23% and 15%, respectively under low straw mulch combining with high stubble and high straw mulch combining with low stubble, both of which demonstrated distinct effects on soil and water conservation, especially low straw mulch combining with high stubble.

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