Open AccessAnalysis of precipitation time characteristics in key water demand period of main crops in Western Guanzhong
Author(s) -
Tong Qu,
Cong Xia,
Lingmei Huang
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/780/6/062034
Subject(s) - precipitation , period (music) , environmental science , irrigation , water resources , agriculture , climatology , sowing , water resource management , geography , meteorology , agronomy , geology , ecology , biology , physics , archaeology , acoustics
Based on the daily precipitation data of seven meteorological stations in the western part of Guanzhong area from 1970 to 2016, the time characteristics of precipitation series are analysed by using the methods of sliding t-test, wavelet analysis and R/S. The results showed that the annual precipitation, summer maize and winter wheat precipitation in the key water demand period generally showed no significant downward trend, and there is no significant mutation point. It will maintain the change characteristics consistent with the recent historical period in the future, which provides certain reference for the regional water resources planning and reasonable allocation, agricultural planting structure adjustment, and irrigation system improvement.