主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

Journal of Meteorology and Environment ›› 2023, Vol. 39 ›› Issue (1): 92-99.doi: 10.3969/j.issn.1673-503X.2023.01.011

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Spatial and temporal distribution of drought and flood in the growing season of soybean in Heilongjiang province

Mo ZHAI1(),Xiu-fen LI1,Dan LIU1,Lan YU2,Hui-hui QU1,*()   

  1. 1. Heilongjiang Provincial Institute of Meteorological Sciences/Innovation and Opening laboratory of Regional Eco-Meteorology in Northeast, China Meteorological Administration/Meteorological Academician Workstation of Heilongjiang Province, Harbin 150030, China
    2. Anda Meteorological Service, Anda 151400, China
  • Received:2021-08-25 Online:2023-02-28 Published:2023-03-27
  • Contact: Hui-hui QU E-mail:404465644@qq.com;quhuihui808@163.com

Abstract:

Based on the daily meteorological data from 62 meteorological stations in Heilongjiang province from 1961 to 2019, the water requirement of soybean was calculated using the method recommended by FAO, and the effective precipitation was calculated using the method recommended by Soil Conservation Service of the United States Department of Agriculture.M-K test and GIS inverse distance weighted interpolation methods were used to analyze the crop water surplus deficit index (CWSDI) and the evolution characteristics of drought and flood at different growth stages of soybean in Heilongjiang province.The results showed that the effective precipitation in the growing season of soybean in Heilongjiang province mainly increased before flowering and decreased after flowering.The water requirement of soybean mainly increased before the third true leaf stage, but decreased after the third true leaf stage, and decreased significantly at pod-grain filling stage and drum-mature stage.The CWSDI of soybean in the growing season was the highest in the eastern central region and the northernmost region, and the eastern region was higher than the western region.The CWSDI was the lowest in flowering-pod and pod-drum stages, and the highest in the drum-grain stage.The flood occurred more frequently in the northern region, more in the east than in the west, and the number of flood stations was the most in the emerging and third true leaf stage.The frequency of drought was higher than that of a flood, higher in the west or southwest than in the east, and lowest in the central and north.Drought often occured in flowering-grain stage.

Key words: Soybean, Crop water surplus deficit index, Drought, Flood

CLC Number: