梯田玉米土壤水分动态研究

赵姚阳; 刘文兆; 濮励杰

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梯田玉米土壤水分动态研究

试验研究

- 梯田玉米土壤水分动态研究
- Soil Moisture’s Dynamics in Maize Field of Trrace in Loess Plateau
- 水土保持通报 2005年24卷第6期页码：1-4
- 作者机构：
  
  1. 南京大学城市与资源系,江苏,南京,210093
  2. 中国科学院水利部水土保持研究所, 陕西杨凌,712100
- 作者简介：
- 基金信息：
  
  国家自然科学基金(90202011);中国科学院知识创新重要方向项目(KZCX3-SW-421)
- DOI：
  中图分类号：
- 纸质出版：2005
- 稿件说明：
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赵姚阳, 刘文兆, 濮励杰. 梯田玉米土壤水分动态研究[J]. 水土保持通报, 2005,24(6):1-4.

ZHAO Yaoyang, LIU Wenzhao, PU Lijie. Soil Moisture’s Dynamics in Maize Field of Trrace in Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2005, 24(6): 1-4.
赵姚阳, 刘文兆, 濮励杰. 梯田玉米土壤水分动态研究[J]. 水土保持通报, 2005,24(6):1-4. DOI：

ZHAO Yaoyang, LIU Wenzhao, PU Lijie. Soil Moisture’s Dynamics in Maize Field of Trrace in Loess Plateau[J]. Bulletin of Soiland Water Conservation, 2005, 24(6): 1-4. DOI：

摘要

依据田间试验资料，对梯田玉米土壤水分动态特征进行了研究。并以谷子和休闲地作为对比，对不同植被覆盖条件下的梯田土壤水分差异进行了探讨。结果表明:(1)雨季降水对玉米地土壤水分的补给起着重要的作用，其土壤贮水量动态与年内的降雨周期相吻合；(2)不同植被覆盖条件对梯田土壤水分状况影响较大，玉米、谷子全生育期的农田蒸散量分别为502.9mm和473.9mm，同期对照休闲地的蒸散量仅为414.1mm；(3)玉米全生育期ET/E0(农田蒸散量/同期水面蒸发量)的比值为0.77，并且在拔节期和抽雄期都大于1，而谷子全生育期该值为0.69。

Abstract

Abstract:Based on the field experiments

soil moisture dynamics of a maize field was studied. Impacts of different land overs on soil moisture were conducted in comparison with soil moisture of a millet field and fallow field. Theresults showed that precipitation in the raining season played an importantrole in supplying soil water in the maize field and the soil moisture’s dynamic period was coincided with the raining season;different land covers had strong effecton the soil moisture

and the evapotranspiration amounts of maize and millet plots were 502. 9 mm and 473.9 mm

respectively

but the fallow land

only 414.lmm;the ET/ Eo ratio of the maize field (evapotransipration/water surface evaporation) in the entire growing period was 0.77

however

its ratios was greater than 1.00 in thejointing stage and the following stage. The ratio for the whole growing period was 0.69 on the millet field.Abstract:Based on the field experiments

soil moisture dynamics of a maize field was studied. Impacts of differentland covers on soil moisture were conducted in comparison with soil moisture of a millet field and fallow field. The results showed that precipitation in the raining season played an importantrole in supplying soil water in the maizefield and the soil moisture’s dynamic period was coincided with the raining ason;different land covers had strong effecton the soil moisture

and the evapotranspiration amounts of maize and millet plots were 502.9 mm and 473.9 mm

respectively

but the fallow land

only 414.lmm;the ET/ Eo ratio of the maize field (evapotransipration/water surface evaporation) in the entire growing period was 0.77

however

its ratios was greater than 1.00 in the jointing stage and the following stage. The ratio for the whole growing period was 0.69 on the millet field.Based on the field experiments

soil moisture dynamics of a maize field was studied. Impacts of different land covers on soil moisture were conducted in comparison with soil moisture of a millet field and fallow field. The results showed that precipitation in the raining season played an importantrole in supplying soil water in the maize field and the soil moisture’s dynamic period was coincided with the raining season;different land covers had strong effecton the soil moisture

and heevapotranspiration amounts of maize and millet plots were 502. 9 mm and 473.9 mm

respectively

but the fallow land

only 414.lmm;the ET/ Eo ratio of the maize field (evapotransipration/water surface evaporation) in the entire growing period was 0.77

however

its ratios was greater than 1.00 in the jointing stage and the following stage. The ratio for the whole growing period was 0.69 on the millet field.

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