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冬小麦夏玉米土壤水分预报及优化灌溉模型
引用本文:邓天宏,方文松,付祥军,刘荣花.冬小麦夏玉米土壤水分预报及优化灌溉模型[J].气象科技,2005,33(1):68-72.
作者姓名:邓天宏  方文松  付祥军  刘荣花
作者单位:1. 南京信息工程大学大气科学系,南京,210044;河南省气象科学研究所,郑州,450003
2. 南京信息工程大学大气科学系,南京,210044
3. 河南省气象科学研究所,郑州,450003
基金项目:科技部社会公益研究专项资金项目 (2 0 0 1DIB10 0 89)资助
摘    要:利用土壤水分平衡方程,结合河南省冬小麦和夏玉米的生长规律和1994~2000年冬小麦、夏玉米田实测土壤湿度资料,建立了河南省冬小麦、夏玉米土壤水分预报及优化灌溉的计算机模型。用1998~1999年郑州市麦田实测土壤湿度资料验证该模型模拟结果,未来10、20、30天土壤湿度相对误差分别为-7.3%~7.7%、-8.3%~6.8%、-7.6%~7.7%,表明利用该模型,可以较为准确地预报未来1个月的土壤水分变化,并可根据小麦、玉米不同发育期特点,给出以最高产量和最佳经济效益为目标的灌溉建议。

关 键 词:夏玉米田  冬小麦  土壤水分平衡  优化灌溉  土壤湿度  测土  预报  河南  未来  郑州市
修稿时间:2004年1月30日

Soil Water Prediction Model and Optimal Irrigation Technique for Winter Wheat and Summer Corn
Deng Tianhong,Fang Wensong Fu Xiangjun Liu Ronghua.Soil Water Prediction Model and Optimal Irrigation Technique for Winter Wheat and Summer Corn[J].Meteorological Science and Technology,2005,33(1):68-72.
Authors:Deng Tianhong  Fang Wensong Fu Xiangjun Liu Ronghua
Institution:Deng Tianhong 1,2 Fang Wensong1 Fu Xiangjun2 Liu Ronghua2
Abstract:Based on winter wheat and summer corn growth regularities in Henan Province and application experiences in optimal irrigation techniques for winter wheat, as well as observed soil moisture data for winter wheat and summer corn from 1994 to 2000, a computer model of soil water prediction and optimal irrigation of winter wheat and summer corn was set up according to the soil water balance equation. The model results were verified by the observed data from wheat fields in Zhengzhou in 1998 and 1999. The relative errors of soil moisture for the next 10, 20, 30 days are -7.3% to 7.7%, -8.3% to 6.8%,-7.6% to 7.7%, respectively. It indicates that soil water can be predicted in one month ahead accurately with this model. Some irrigation suggestions with respect to different wheat and corn growth phases are given, aiming to obtain the maximum yield and the optimal economic benefits.
Keywords:soil water  optimal irrigation technique  prediction model
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