|
| 内蒙古玉米主产区农业热量资源变化及其对策探讨 |
| Agricultural thermal resource changes and corresponding agricultural strategies in major maize production regions of Inner Mongolia |
| 投稿时间：2018-09-09 |
| DOI：10.13254/j.jare.2018.0229 |
| 中文关键词: 内蒙古，气温，积温，玉米，热量资源 |
| 英文关键词: Inner Mongolia, air temperature, accumulated temperature, maize, thermal resources |
| 基金项目:国家重点研发计划项目（2017YFD0300803，2018YFD0300403） |
|
| 摘要点击次数: 1807 |
| 全文下载次数: 2440 |
| 中文摘要: |
| 为了探讨在气候变化、生态环境恶化和农业提质增效的压力下，内蒙古玉米主产区农业热量资源的变化及其生产对策，分析了1961—2017年间内蒙古玉米主产区通辽市、赤峰市、巴彦淖尔市、鄂尔多斯市和兴安盟等地区年均温、≥10℃年积温和生长季（5—9月）积温的变化。结果表明，各地区年均温、≥10℃年积温和生长季积温存在地区差异，但1961—2017年间三者均呈线性上升趋势，而生长季积温占比下降。气温的升高和积温的增加使农业热量资源增加，有利于玉米增产和种植面积的扩大，使内蒙古气候温暖区玉米生产潜力增大；但应避免越区种植，警惕气象灾害风险。在气温升高的背景下，通过品种选择、播期调整和肥料管理，充分利用农业热量资源，可使热量资源利用率提高15%，对于内蒙古地区应对气候变化、实现玉米生产的高产高效具有重要现实意义。 |
| 英文摘要: |
| Under the pressure of climatic change, eco-environmental deterioration, and agricultural efficiency improvements, changes in agricultural thermal resources and related countermeasures should be reconsidered for maize production. In this study, analysis of the agricultural thermal resources during the period 1961-2017 in the major production regions of Inner Mongolia (Tongliao City, Chifeng City, Bayannur City, Ordos City, and Hinggan Leagues) showed that average annual temperature (AAT), annual accumulated temperature (≥ 10℃, AAT10) and growing season (May-September) accumulated temperature (≥ 10℃, GSAT10) increased significantly, but the ratio of GSAT10/AAT10 declined significantly. The increase in air temperature and accumulated temperature improved thermal resources for maize production, which was beneficial for crop production and expansion and resulted in increased production potential in warm temperate areas. In the major maize production regions of Inner Mongolia, the use efficiency of thermal resources could be increased by 15% through the complete use of thermal resources, cultivar selection, sowing date adjustment, and appropriate water and fertilizer management. The results of the present study are of great significance to facilitate climatic change adaptation, highly efficient production, and yield breakthrough of maize production in Inner Mongolia. |
| HTML
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
