| 韩淑敏,程一松,胡春胜.太行山山前平原作物系数与降水年型关系探讨[J].干旱地区农业研究,2005,(5):152~158 |
| 太行山山前平原作物系数与降水年型关系探讨 |
| Relationship between crop coefficient and precipitation pattern in the piedmont of Mt．Taihang |
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| DOI：10.7606/j.issn.1000-7601.2005.05.30 |
| 中文关键词: 作物系数 降水年型 冬小麦 玉米 |
| 英文关键词:crop coefficient precipitation pattern winter wheat maize |
| 基金项目:中国科学院遗传所农业资源研究中心创新项目“华北地区地下水资源预测研究” |
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| 中文摘要: |
| 利用中国科学院栾城农业生态系统试验站1995—2001气象数据和同期大型称重式蒸渗仪监测的小麦、玉米蒸散量,采用参考作物法探讨分析了小麦、玉米生长期作物系数与降水年型的关系。结果表明,不同降水年型下小麦生长期作物系数差异不明显,统计时段内小麦生育期作物系数平均值为0.90,丰水年玉米生长期作物系数偏高,平均值为1.2,而平水年与枯水年玉米生长期作物系数差异不明显,平均值为0.94。为准确估算作物需水量,实现精确灌溉,建议尽量采用长系列观测数据确定的不同降水年型的作物系数,尤其是在玉米生长期。 |
| 英文摘要: |
| Based on the meteorological data and evapotranspiration (ET) of winter wheat and maize monitored by weighting lysimeter from 1995 to 2001 in Luancheng Experimental Station of Chinese Academy of Sciences, the relationship between crop coefficient and precipitation pattern was analyzed by reference crop method. In wheat season, the difference of crop coefficient was not significant in wet, dry and normal years, and the average value was 0.90 from 1995 to 2001. In corn season, the crop coefficient was higher in wet year (the average value was 1.2), but the difference of crop coefficient was insignificant in dry and normal years (the average value was 0.94). In order to appraise crop ET accurately and to conduct irrigation precisely, it is suggested that crop coefficient should be determined by long serial data covering wet, dry and normal years, especially in corn season. |
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