| 水稻的干旱指标与干旱预报 |
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| 引用本文： | 汤广民,蒋尚明. 水稻的干旱指标与干旱预报[J]. 水利水电技术, 2011, 42(8) |
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| 作者姓名： | 汤广民 蒋尚明 |
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| 作者单位： | 1. 安徽省水利部淮河水利委员会
2. 水利科学研究院,安徽省水利水资源重点实验室,安徽蚌埠233000 |
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| 基金项目： | 水利部公益性行业科研专项经费项目“淮河流域旱灾治理关键技术研究(”200901026) |
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| 摘 要： | 从作物的干旱机理和水稻节水栽培模式变化的角度,提出并论证了以土壤墒情作为水稻干旱指标的合理性和可行性,并建立了稻田的水分平衡方程与土壤水分消退模型,确定了研究区域以土壤墒情作为水稻干旱指标的指标取值和对应的干旱等级划分;同时,提出了以断水天数为指标的水稻干旱预报新方法。应用表明,该方法适合于安徽江淮丘陵区的自然环境条件和作物生长习性。
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| 关 键 词： | 自然灾害 干旱指标 干旱预报 水稻 |
Drought index and drought prediction for rice |
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| TANG Guangmin,JIANG Shangming. Drought index and drought prediction for rice[J]. Water Resources and Hydropower Engineering, 2011, 42(8) |
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| Authors: | TANG Guangmin JIANG Shangming |
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| Affiliation: | TANG Guangmin,JIANG Shangming(Key Laboratory of Water Conservancy and Water Resources of Anhui Province,Water Resources Research Institute of Anhui Province and Huaihe River Commission,MWR.,Bengbu 233000,Anhui,China) |
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| Abstract: | From the aspects of the mechanism of crop drought and the change of the pattern of rice water-saving cultivation,the rationality and feasibility of taking the soil moisture as the rice drought index are presented and demonstrated herein,and then,a water balance equation and a soil moisture regression model for the rice field are established;with which the soil moisture is determined to be used for the selection of the values for the rice drought index and the corresponding classification of the drought with... |
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| Keywords: | natural disasters drought index drought prediction rice |
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