| 气候变化对陇东塬区界限温度和作物种植结构的影响分析 |
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| 引用本文： | 杜军,刘英.气候变化对陇东塬区界限温度和作物种植结构的影响分析[J].中国农学通报,2015,31(27):253-257. |
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| 作者姓名： | 杜军 刘英 |
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| 作者单位： | 甘肃省庆阳市气象局,甘肃省庆阳市气象局 |
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| 基金项目： | 国家自然科学基金项目（面上项目，重点项目，重大项目），国家级行业（气象）重点专项“我国北方干旱致灾过程及机理”(GYHY201506001)。 |
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| 摘 要： | 为了应对气候变化对现代农业生产的影响， 利用西峰 1971—2014年连续 44年气象资料及作物资料， 分析气候变化对陇东塬区界限温度以及作物种植结构的影响。结果表明： 44年来 0、 10、 15℃界限温度的初日都有提前的趋势， 终日都有推后的趋势； 各界限温度的间隔天数和积温都呈增加趋势。0℃初终日期间天数增加， 生长期延长， 种植北界扩展， 使农业结构向多元化发展。10℃初终日期间天数、 积温的增加， 使农田的复种指数提高， 单位土地面积上的产量增加， 线性倾向率为 472.3 kg/(hm2·10 a)。各界限温度间的积温增加， 加剧了气候暖干化发展。
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| 关 键 词： | 皋茶 皋茶 保健茶 研制 抗氧化活性 |
| 收稿时间： | 2015/7/13 0:00:00 |
| 修稿时间： | 2015/7/31 0:00:00 |
Impact Analysis of Climate Change on the Boundary Temperature and Crop Planting Structure in Eastern Gansu Province |
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| Abstract: | ??The impact analysis of climate change on the boundary temperature and crop planting structure in eastern Gansu Province, is according to use of Xifeng continuous 44 years meteorological data and crop data in 1971-2014. The results showed that 44 years to 0??, 10??, 15?? limit temperature at the first day has the trend of the early, but that after day has pushed; The boundary temperature of the interval number and accumulated temperature increased, significantly increased after 90s, and approved by the significance test of 0.001. 0?? in the early days in advance that makes the winter wheat root period 2.12d/a, and apple buds 2.75d/10a in advance; 10?? at the beginning of the first day that makes 1.43d/10a the date of maize sowing in advance; 15?? all day delayed causes the date of winter wheat planting postpone 2.19d/10a. Days at 0?? has increased, growth period and plant north extension makes agricultural structure to diversified development. Both the days at 10?? and the increase of accumulated temperature causes the multiple crop index increase, the yield per unit land area increases and the linear trend rate of 472.3 kg/hm2?10a. The accumulated temperature between every boundary temperature has increased, which causes a dry weather. |
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| Keywords: | climate change eastern Gansu Province boundary temperature planting structure |
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