| 马兴祥,陈雷,王鹤林,丁文魁,阳伏林.高海拔地区春小麦干物质积累与水热条件的关系[J].干旱地区农业研究,2013,31(1):52~56 |
| 高海拔地区春小麦干物质积累与水热条件的关系 |
| Relationship between dry matter accumulation of spring wheat and the water and thermal condition in high altitude area |
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| DOI：10.7606/j.issn.1000-7601.2013.01.10 |
| 中文关键词: 高海拔地区 旱地春小麦 干物质积累 水热耦合 |
| 英文关键词:high altitude area dryland spring wheat dry matter accumulation water and temperature coupling |
| 基金项目:国家重大科学研究计划“全球典型干旱半干旱地区气候变化及其影响”（2012CB955304）；973计划“全球变化影响下我国主要陆地生态系统的脆弱性与适应性研究”（2010CB951302）；科技部公益研究项目“西北地区旱作农业对气候变暖的响应特征及其预警和应对技术研究”(GYHY200806021-01)；科技部行业（气象）专项“农田土壤水分利用效率对气候变化的响应及适应技术”(GYHY201106029)；甘肃省气象局气象科研项目(2012-15)；兰州干旱气象研究所科研项目(KYS2012BSKY01) |
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| 中文摘要: |
| 为了探索气候变化情景下农作物种植应对措施，采用
分期播种法，研究了高海拔旱作区不同气候情景对春小麦干物质积累过程中降水、热量的影
响。结果表明,春小麦干物质积累量与积温、降水均呈极显著正相关，干物质积累期间
的积温每增加50 ℃·d，累积生长量增加0.2 g·株-1·d-1;降水量增加10 m
m，累积生长量增加0.11 g·株-1·d-1。计算两年不同播期水、热耦合指
数，具
有指数大干物质积累多，反之则有减少的趋势。在水、热要素中，降水在旱地春小麦干物质
积累过程中的贡献更突出。最终干物质积累量与产量呈极显著正相关，干物质积累量增加，
产量增加。根据干物质积累特点和不同气候条件提出了种植应对措施。 |
| 英文摘要: |
| In order to explore the response measures of crop
planting under the background of climate changes, the staging seeding test was c
onducted to evaluate the influence of water and thermal condition on dry matter
accumulation of spring wheat in high altitude area. The result showed that the d
ry matter accumulation of spring wheat was positively related with both accumula
ted temperature and precipitation at very significant level. If the accumulated
temperature increased 50℃·d, the accumulated growth quantity increased 0.2 g·
plant-1·d-1; and if the precipitation increased 10 mm, the accumula
ted growth quan
tity increased 0.11 g·plant-1·d-1 during the dry matter accumulati
on period. The
coupling index of water and temperature under different seeding stages in two te
st years was calculated, and it was found that when the index was high the dry m
atter accumulation tended to increase, otherwise it tended to reduce. In the fac
tors of water and temperature, the contribution of precipitation was more promin
ent to the dry matter accumulation of spring wheat in dryland. There was a very
significant positive correlation between the final dry matter accumulation and t
he yield. The planting countermeasures were proposed according to the features o
f dry matter accumulation and different climate conditions. |
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