[1]JIN Huaxing,HU Shanshan,GONG Nianzu,et al.Variation of Water Requirement and Precipitation in Wheat Growth Stages from 1961 to 2013[J].Research of Soil and Water Conservation,2017,24(02):178-183.
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Variation of Water Requirement and Precipitation in Wheat Growth Stages from 1961 to 2013
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
24
Number of periods:
2017 02
Page number:
178-183
Column:
Public date:
2017-04-28
- Title:
- Variation of Water Requirement and Precipitation in Wheat Growth Stages from 1961 to 2013
- Keywords:
- Chouzhou City; crop water requirement; irrigation water requirement; wheat growth stages; multiscale variation
- CLC:
- S512.1+1
- DOI:
- -
- Abstract:
- Based on the data from Meteorological Bureau of Chuzhou City and using ensemble empirical mode decomposition and cross wavelet analysis, the crop and irrigation water requirements during the wheat growth stages were analyzed. The results showed that the crop and irrigation water requirements experienced increasing trend with the rate of 2.80 mm/year and 1.48 mm/year from 1961 to 2013, respectively. For decadal change, the crop water requirement presented gradually increasing trend, while the irrigation water requirement exhibited decrease first and then increase. The crop water requirement has the periodicities of 2.65 years, 6.63 years, 13.25 years and 26.50 years, the irrigation water requirement has the periodicities of 3.11 years, 5.89 years, 10.60 years and 26.5 years. The crop and irrigation water requirements have the in-phase relationship with evapotranspiration and significant anti-phase relationship with precipitation.
- References:
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