| 刘德祥,郭俊琴,董安祥,宁惠芳.气候变暖对甘肃夏秋作物产量的影响[J].干旱地区农业研究,2006,(4):123~128 |
| 气候变暖对甘肃夏秋作物产量的影响 |
| Impact of climate warming on yield of summer and autumn crops in Gansu province |
| |
| DOI：10.7606/j.issn.1000-7601.2006.04.27 |
| 中文关键词: 甘肃省 气候变暖 小麦 玉米 产量 |
| 英文关键词:Gansu Province climate warming wheat corn yield |
| 基金项目:甘肃省科技攻关计划项目“甘肃干旱生态环境对全球气候变暖的响应及减灾技术的研究”(2GS042-A44-017) |
|
| 摘要点击次数: 332 |
| 全文下载次数: 282 |
| 中文摘要: |
| 通过对甘肃省日平均气温≥0℃积温与冬小麦、春小麦产量及≥10℃积温与玉米产量的关系进行对比分析,得出≥0℃和≥10℃积温与旱作区和灌溉区的冬小麦、春小麦和玉米产量呈显著的正相关;旱作区冬小麦产量与秋春季降水量呈较显著的正相关。气候变暖使农作物生育期热量资源增加,有利于作物产量提高;但是,由于河东降水量呈减少趋势,限制了热量资源增加所能发挥的作用,影响夏秋作物产量的提高,气候变暖的负面影响显现。 |
| 英文摘要: |
| By comparative analysis between the accumulated temperature above 0℃ and the yield of winter wheat and spring wheat,and between the accumulated temperature above 10℃ and the yield of corn,it has been shown that there are positive correlations between the accumulated temperature above 0℃ or 10℃ and the yields of winter wheat,spring wheat and corn in both dry farmlands and irrigation farmlands at 95% and 99% significant level,respectively.There is also a positive correlation between the autumn and spring precipitation and the yield of winter wheat in dry farmlands at 90% significant level.The climate warming causes the increase of thermal resource during the growing period of crops,and is propitious to the rise of yield.However,because of the reducing of precipitation,the effect of thermal resource increasing is limited,and the negative influence of climate warming on yield of crops has been displayed in Hedong region. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| | |