| 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 |
| Key Words: high altitude area dryland spring wheat dry matter accumulation water and temperature coupling |
| Author Name | Affiliation | | MA Xingxiang | Institute of Arid Meteorology, CMA/Key Laboratory of Arid Climate Change and Reducing Disaster of Gansu Province/Key Open Laboratory of Arid Climate Change and Disaster Reduction of CMA, Lanzhou, Gansu 730020, China
Wuwei Agricultural Meteorology Experimentation Station of Gansu Province, Wuwe
i, Gansu 733000, China | | CHEN Lei | | | WANG Helin | Institute of Arid Meteorology, CMA/Key Laboratory of Arid Climate Change and Reducing Disaster of Gansu Province/Key Open Laboratory of Arid Climate Change and Disaster Reduction of CMA, Lanzhou, Gansu 730020, China
Wuwei Agricultural Meteorology Experimentation Station of Gansu Province, Wuwe
i, Gansu 733000, China | | DING Wenkui | Wuwei Agricultural Meteorology Experimentation Station of Gansu Province, Wuwe
i, Gansu 733000, China | | YANG Fulin | Institute of Arid Meteorology, CMA/Key Laboratory of Arid Climate Change and Reducing Disaster of Gansu Province/Key Open Laboratory of Arid Climate Change and Disaster Reduction of CMA, Lanzhou, Gansu 730020, China
Wuwei Agricultural Meteorology Experimentation Station of Gansu Province, Wuwe
i, Gansu 733000, China |
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| Abstract: |
| 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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