Responses of Soil Moisture of Gravel-mulched Field to Precipitation Fluctuation of Different Planting Years

ZHAO Wen-ju; YU Wen; MA Xiao-yi; SONG Jian-shu

doi:10.13961/j.cnki.stbctb.2014.06.010

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Responses of Soil Moisture of Gravel-mulched Field to Precipitation Fluctuation of Different Planting Years

- Responses of Soil Moisture of Gravel-mulched Field to Precipitation Fluctuation of Different Planting Years
- Bulletin of Soiland Water Conservation Vol. 33, Issue 6, Pages: 18-21(2014)
- 作者机构：
  
  1. 兰州理工大学能源与动力工程学院,甘肃,兰州,730050
  2. 西北农林科技大学旱区农业水土工程教育部重点实验室, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2014.06.010
  CLC：
- Published：2014
- 稿件说明：
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ZHAO Wen-ju, YU Wen, MA Xiao-yi, et al. Responses of Soil Moisture of Gravel-mulched Field to Precipitation Fluctuation of Different Planting Years[J]. Bulletin of Soiland Water Conservation, 2014, 33(6): 18-21.
DOI：

ZHAO Wen-ju, YU Wen, MA Xiao-yi, et al. Responses of Soil Moisture of Gravel-mulched Field to Precipitation Fluctuation of Different Planting Years[J]. Bulletin of Soiland Water Conservation, 2014, 33(6): 18-21. DOI： 10.13961/j.cnki.stbctb.2014.06.010.

摘要

采取野外大田试验

定量分析了7.1和1.9 mm不同降水脉动下3 d内不同种植年限压砂地土壤含水率随时间的变化规律。试验结果表明

压砂地土壤含水率与时间呈指函数正相关关系

Abstract

Taking the field experiment

the change of gravel-mulched field soil moisture of different planting years within three days after the precipitation pulses of 7.1 and 1.9 mm was analyzed quantitatively. The results showed that soil moisture content of gravel-mulched field had a positive exponential relationship with time

and the correlation coefficient ranges from 0.9381 to 0.9873

the increase of soil moisture content showed an order as following:new gravel-mulched field >middle gravel-mulched field >old gravel-mulched field. When precipitation pulses was 7.1 mm

soil moisture content of new gravel-mulched field

middle gravel-mulched field and old gravel-mulched field increased by 42.3%

27.4% and 23.2% respectively on the third day after rainfall

and the average moisture content increased by 52.7%

52.7% and 45.5% respectively than that of bare land. When precipitation pulses was 1.9 mm

the soil moisture content increased by 22.6%

27.1% and 7.6% respectively

and the average moisture content increased by 171.8%

156.4%

and 110.3% respectively than that of bare land. When precipitation pulses was 7.1 mm and 1.9 mm

the moisture content in gravel-mulched field started to decrease in 7 days and 5 days after precipitation respectively. Both of two rainfall showed that the average soil moisture content was that new gravel-mulched field >middle gravel-mulched field >old gravel-mulched field >bare field. Compared with the bare land

gravel-mulched field can improve the utilization efficiency of the rainwater.

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