Factors Affecting Initial Time of Runoff Under Simulated Furrow Irrigation in Western Liaoning Cinnamon Soil

WU Min; FAN Haoming; YANG Xiaozhen; ZHOU Lili; JIA Yanfeng; WANG Tieliang

doi:10.13961/j.cnki.stbctb.2015.03.002

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Factors Affecting Initial Time of Runoff Under Simulated Furrow Irrigation in Western Liaoning Cinnamon Soil

- Factors Affecting Initial Time of Runoff Under Simulated Furrow Irrigation in Western Liaoning Cinnamon Soil
- Bulletin of Soiland Water Conservation Vol. 35, Issue 3, Pages: 34-38(2015)
- 作者机构：
  
  沈阳农业大学水利学院,辽宁,沈阳,110866
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2015.03.002
  CLC：
- Published：2015
- 稿件说明：
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WU Min, FAN Haoming, YANG Xiaozhen, et al. Factors Affecting Initial Time of Runoff Under Simulated Furrow Irrigation in Western Liaoning Cinnamon Soil[J]. Bulletin of Soiland Water Conservation, 2015, 35(3): 34-38.
DOI：

WU Min, FAN Haoming, YANG Xiaozhen, et al. Factors Affecting Initial Time of Runoff Under Simulated Furrow Irrigation in Western Liaoning Cinnamon Soil[J]. Bulletin of Soiland Water Conservation, 2015, 35(3): 34-38. DOI： 10.13961/j.cnki.stbctb.2015.03.002.

摘要

[目的

]

明确不同坡度、容重、含水率、灌水量对辽西褐土沟灌侵蚀产流起始时间的影响

以减少褐土沟灌侵蚀

指导农田灌溉。[方法

]

采用正交设计进行了室内模拟垄沟冲刷试验

采用4因素3水平的响应曲面分析法建立产流起始时间、侵蚀量的二次多项式数学模型。[结果

]

产流时间都在20.05 s之内

最小的为3.03 s;产流起始时间、侵蚀量的二次多项式数学模型决定系数R

分别为0.998 9和0.999 2。[结论

]

坡度、灌水量、土壤容重、土壤含水率与产流时间呈负相关关系

对产流时间有着显著影响

且灌水量 > 坡度 > 土壤含水率 > 土壤容重;试验中建立的二次多项式数学模型拟合效果良好。通过数值计算

提出不同坡度下满足侵蚀量最小时的灌溉模式。

Abstract

[Objective] To analyze the influence of different slope

soil bulk density

soil moisture content

and irrigation water amount on initial time of runoff during furrow irrigation erosion of cinnamon soil in Western Liaoning Province

in order to reduce the furrow irrigation erosion and guide the irrigation further. [Methods] The scouring experiment was conducted by orthogonal design. The method of response surface analysis with 4 factors and 3 levels was adopted to build a quadratic equation for initial time of runoff and soil erosion amount. [Results] The initial time of runoff was within 20.05 s and the smallest was 3.03 s. The determination coefficient of the quadratic equation was 0.998 9 and 0.999 2

respectively. [Conclusion] Slope

irrigation amount

soil bulk density and soil moisture content were negatively correlated with initial time of runoff

and had a significant effect on it. The influence order was as following: irrigation amount > slope > soil bulk density > soil moisture content. The quadratic equation build in the experiment was well fitted. Irrigation mode of minimal erosion amount under different slope was obtained by numerical calculation.

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references

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