| 冬小麦田间墒情预报的经验模型 |
| |
| 引用本文： | 尚松浩,雷志栋,杨诗秀.冬小麦田间墒情预报的经验模型[J].农业工程学报,2000,16(5):31-33. |
| |
| 作者姓名： | 尚松浩 雷志栋 杨诗秀 |
| |
| 作者单位： | 清华大学;清华大学;清华大学 |
| |
| 基金项目： | 国家自然科学基金(编号:59839320) |
| |
| 摘 要： | 基于土壤水分变化率与贮水量成正比这一假定,得出了土壤水分的指数消退关系。在此基础上,建立了冬小麦生育期土壤墒情预报的经验递推模型,并对模型进行了检验,表明模型预报效果较好。该模型的特点是模型简单且参数较少;其主要局限性是模型中土壤水分消退系数地域、时域性较强
|
| 关 键 词： | 冬小麦 土壤水分消退 墒情预报 经验模型 |
| 收稿时间： | 1999/4/20 0:00:00 |
| 修稿时间： | 1999-04-20 |
Empirical Model for Soil Moisture Forecast in Winter Wheat Field |
| |
| Shang Songhao,Lei Zhidong and Yang Shixiu.Empirical Model for Soil Moisture Forecast in Winter Wheat Field[J].Transactions of the Chinese Society of Agricultural Engineering,2000,16(5):31-33. |
| |
| Authors: | Shang Songhao Lei Zhidong and Yang Shixiu |
| |
| Abstract: | Based on an assumption that the depletion of soil water is proportional to soil water storage, the exponential depletion relation of soil water is obtained. As a result, an empirical model is proposed to forecast soil moisture regime in the growing season of winter wheat. The model is simple with few parameters, but spatial and temporal variability of soil water depletion coefficient limits the use of the model. |
| |
| Keywords: | winter wheat soil moisture depletion soil moisture forecast empirical model |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《农业工程学报》浏览原始摘要信息 |
| 点击此处可从《农业工程学报》下载免费的PDF全文 |
