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Analysis of Temporal-spatial Variation and Climate Influencing Factors on Wine Grape Water Requirement in Gansu Province During the Past 30 Years(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年10
Page:
190-195
Research Field:
Publishing date:

Info

Title:
Analysis of Temporal-spatial Variation and Climate Influencing Factors on Wine Grape Water Requirement in Gansu Province During the Past 30 Years
Author(s):
LI Ya-shan; WANG Zhen-ji; FAN Shu-guo; WANG Bo; XU Cheng-dong
(Department of Chemistry and Life Science，Chuxiong Normal University,Chuxiong,Yunnan 675000)
Keywords:
Gansu province; wine grape; crop water requirement; crop coefficient; meteorological factors
PACS:
S 274.3；S 663.1
DOI:
10.11937/bfyy.201510048
Abstract:
Crop water requirement was the precondition of irrigation decision-making.To research the temporal-spatial variations of crop water requirement and the influencing factors of crop water requirement had an important guiding function on the irrigation water management.Crop water requirement of wine grape in Gansu province were calculated by FAO approach，which equaled to reference crop evapotranspiration multiplied by crop coefficient of wine grape.Meantime，the relation between crop water requirement and meteorological factors were explored.The results suggested that the spatial distribution of water requirement of wine grape in Gansu province emerged higher in northwest and lower in southeast.The water requirement of wine grape was concentrated upon the range of 300-600 mm.The highest space was twice than the lowest space.From nearly 30 years，the water requirement of wine grape in Gansu province presented rising trend，and the rising rate was 5.64 mm/10a，but the trend was not significant.But the local areas of the province appeared rising or decreasing significantly.Correlation analysis relative showed that daily average temperature，daily maximum temperature，daily minimum temperature sunshine hour and wind speed were significantly positive correlated with wine grape water requirement，while relative humidity and precipitation were significantly negatively correlated with it.The daily average temperature was most correlative with wine grape water requirement and the precipitation was the last correlative with it among the seven meteorological factors.

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Last Update: 2015-08-09