| 杨小利,刘庚山,杨兴国.甘肃黄土高原主要农作物水分胁迫敏感性[J].干旱地区农业研究,2006,(4):90~93 |
| 甘肃黄土高原主要农作物水分胁迫敏感性 |
| The sensitivity of main crops to water stress in Loess Plateau region in Gansu |
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| DOI：10.7606/j.issn.1000-7601.2006.04.20 |
| 中文关键词: 农作物 生育期 水分胁迫 敏感性 |
| 英文关键词:crop development period water stress sensitivity |
| 基金项目:中国气象局新技术应用推广项目“西北地区干旱监测系统研究”(CMATG2005M22)；兰州干旱气象研究所基金项目“气象旱度模式在西北地区的修正和应用”(IAM200508) |
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| 中文摘要: |
| 利用甘肃黄土高原几个代表站点气候、物候、产量、土壤水分等资料,计算了本区几种主要农作物在不同生育时段对水分胁迫的敏感系数。结果表明,不同作物在不同时段对水分亏缺的敏感性有所不同,冬小麦在孕穗—开花期的敏感系数最大,冬前苗期和返青拔节期的敏感系数较大,不同的地方这两个阶段的敏感性大小不同;玉米在拔节—抽雄期敏感系数较大,抽雄—灌浆期次之;春小麦只存在一个敏感性高值区,即拔节—开花期,其余时段敏感性较小。 |
| 英文摘要: |
| The sensitivity coefficients of main crops to water stress in different development periods in three representative stations on Loess Plateau in Gansu was calculated based on the data of climate,crop yield,soil moisture and crop growth.The results show that the sensitivity of different kind of crops at different development periods varies.Winter wheat is more sensitive in booting to anthesis than in any other development periods,corn is more sensitive in jointing to heading;while spring wheat is only sensitive in jointing to athesis. |
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