A SOIL-WATER BALANCE MODEL UNDER WATERLOGGING CONDITION IN WINTER WHEAT

Hu Jichao; Cao Weixing; Luo Weihong

Vol.15, NO.1, 2004

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2004 > 15(1): 41-50

Hu Jichao, Cao Weixing, Luo Weihong. A soil-water balance model under waterlogging condition in winter wheat. J Appl Meteor Sci, 2004, 15(1): 41-50.

Citation:

Hu Jichao, Cao Weixing, Luo Weihong. A soil-water balance model under waterlogging condition in winter wheat. J Appl Meteor Sci, 2004, 15(1): 41-50.

Hu Jichao, Cao Weixing, Luo Weihong. A soil-water balance model under waterlogging condition in winter wheat. J Appl Meteor Sci, 2004, 15(1): 41-50.

Citation:

Hu Jichao, Cao Weixing, Luo Weihong. A soil-water balance model under waterlogging condition in winter wheat. J Appl Meteor Sci, 2004, 15(1): 41-50.

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A SOIL-WATER BALANCE MODEL UNDER WATERLOGGING CONDITION IN WINTER WHEAT

MOA Key Laboratory of Crop Growth Regulation , Nanjing Agricultural University , Nanjing 210095

Received Date: 2002-07-11
Rev Recd Date: 2003-01-20
Publish Date: 2004-02-29

Abstract

Abstract

Based on soil moisture budget method, a soil water balance model for waterlogged winter wheat field was developed, which can be coupled with crop growth model. In order to simulate the soil waterlogging status, the calculation of capillary rise from the water table and the functions of hydraulic conductivity characteristics were incorporated. The simulated values of daily evapotranspiration were verified by the dataset from the pot experiments. The model was validated for water table and soil water contents for 0~10 cm, 10~20 cm, 20~30 cm, 30~40 cm and 40~50 cm soil layers using the observed data in Jingzhou and Jintan sites. Statistical analysis shows a good agreement between the simulated and observed data.
- Waterlogging;
- Soil moisture;
- Simulation model;
- Winter wheat

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References(21)

Figures and Tables

图 1 冬小麦日蒸散量的模拟值与实测值比较

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图 2 冬小麦生长季地下水位模拟值和实测值变化比较

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图 3 冬小麦生长季日降水量的变化

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图 4 荆州和金坛不同土层土壤含水量的模拟值和实测值比较

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图 5 冬小麦生长季土壤含水量模拟值和实测值1:1关系图

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表 1 小麦盆栽试验不同水分处理的日蒸散量

表 2 荆州和金坛两站土壤水分物理特征值

表 3 荆州和金坛两站冬小麦生长中后期逐旬降水量 (mm)

References

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