Mathematic Model and Its Examination of the Optimum Block Space on Ridge Plotted Sloping Field

Shen Changpu; Liu Fu; Zhang Shiling; Yang Aimin; Gong Zhenping

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Mathematic Model and Its Examination of the Optimum Block Space on Ridge Plotted Sloping Field

- Mathematic Model and Its Examination of the Optimum Block Space on Ridge Plotted Sloping Field
- Bulletin of Soiland Water Conservation Vol. 16, Issue 3, Pages: 1-5(1997)
- 作者机构：
  
  1. 东北农业大学,哈尔滨市,150030
  2. 黑龙江省水土保持研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：1997
- 稿件说明：
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Shen Changpu, Liu Fu, Zhang Shiling, et al. Mathematic Model and Its Examination of the Optimum Block Space on Ridge Plotted Sloping Field[J]. Bulletin of Soiland Water Conservation, 1997, 16(3): 1-5.
DOI：

Shen Changpu, Liu Fu, Zhang Shiling, et al. Mathematic Model and Its Examination of the Optimum Block Space on Ridge Plotted Sloping Field[J]. Bulletin of Soiland Water Conservation, 1997, 16(3): 1-5. DOI：

摘要

根据黑龙江省垄体的几何图形，推导出各种坡度垄作区田单个浅穴容积V的计算公式。建立了最佳挡距数学模型L=168θ

-0.50

.在利用人工模拟降雨检验此模型时，选择了2°，4°和6°坡的玉米和大豆坡耕地，比较最佳挡距、最大挡距和不设土挡的开放垄的拦蓄降雨量。最佳挡距拦蓄降雨量分别是54.8mm

50.4mm和42.06mm

比最大挡距分别多拦蓄18.4mm

19.9mm和19.7mm降雨。比不设土挡的分别多拦蓄49.4mm

44.6mm和39.9mm.在自然降雨条件下，6°大豆坡耕地最佳挡距的产量比最大挡距和不设挡的对照区分别增产22.3%和36.8%

证明此最佳挡距模型是可行的和可靠的

Abstract

According to the geometrics of ridge furrow

a formula for calculating the volume of individual shallow basin in various slopes was derived

and an optimum block space model was developed.This model suited various sloping fields. Through the examination on 2°

4° and 6° sloping fields with 3.6mm/min rainstorm by rainfall simulater in the ridge plots of optimum block space

they intercepted the rainfall of 54.8

50.4

and 42.0mm respectively

and were 18.4

19.9

19.7 and 49.4

44.6

39.9mm higher than that on the maximum block space and the open ridge respectively.Under the natural rainfall

the yield of soybean on 6° sloping field according to this model was 2 200 kg/ha

and was 22.3% and 36.8% higher than the check plots of the maximum block space and the open ridge.Therefore

the model is verified to be feasible and reliable.

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