| 豫北水分变化特征·干旱成因及其对策研究——以新乡为例 |
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| 引用本文： | 祝新建,张心令. 豫北水分变化特征·干旱成因及其对策研究——以新乡为例[J]. 安徽农业科学, 2012, 0(13): 7728-7730,7758 |
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| 作者姓名： | 祝新建 张心令 |
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| 作者单位： | 1. 河南省获嘉县气象局,河南获嘉,453800
2. 河南省气象局法规处,河南郑州,450003 |
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| 基金项目： | 科技部科技成果转化项目 |
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| 摘 要： | 根据豫北新乡市1971～2009年的气象资料,从降水量、蒸发量方面,对水分变化特征进行分析,并找出干旱的成因。研究表明,豫北降水量和年蒸发量整体呈下降趋势,干旱趋势增加;农田干旱由大气降水不平衡所造成,但其表现在土壤水的失调上;调控旱作制度,大力发展防旱抗旱的农业技术措施,选用抗旱品种,制定节约用水的各项政策,可有效防御干旱发生。
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| 关 键 词： | 降水 蒸发 干旱 成因 对策 豫北 新乡 |
Moisture Change Characteristics, Causes of Drought and Countermeasures in North Henan Province |
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| Affiliation: | ZHU Xin-jian et al(Huojia Meteorological Bureau of Henan Province,Huojia,Henan 453800) |
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| Abstract: | According to the meteorological data of Xinxiang City in North Henan Province from 1971 to 2009,the moisture change characteristics were analyzed from the rainfall and evaporation amount,and the causes of drought were found out.As indicated by the research results,both the rainfall and annual evaporation amount in North Henan Province showed an overall decreasing tendency,while the drought was intensified;the drought of farmland was caused by the uneven precipitation and it was expressed in the imbalanced soil water content;the drought can be effectively prevented by regulating the dry farming system,developing the drought resistance agricultural techniques,selecting the drought-resistant cultivars and formulating various water-saving measures. |
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| Keywords: | Precipitation Evaporation Drought Causes Strategy North Henan Province Xinxiang |
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