Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (3): 81-87.doi: 10.11924/j.issn.1000-6850.casb20190700428

Special Issue: 现代农业发展与乡村振兴 油料作物 农业气象

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Main Agro-meteorological Disasters Heilongjiang: Sequential Characteristics and Grey Correlation Analysis of Their Effects on Soybean Yield

Wang Qiujing1, Li Xiufen1, Yan Ping1, Lv Jiajia1, Wang Liangliang1, Ma Guozhong2()   

  1. 1Innovation and Opening laboratory of Regional Eco-Meteorology in Northeast, China Meteorological Administration/Meteorological Academician Workstation of Heilongjiang Province/Heilongjiang Institute of Meteorological Sciences, Harbin 150030
    2Heilongjiang Meteorological Observatory, Harbin 150030
  • Received:2019-07-15 Revised:2019-11-14 Online:2020-01-25 Published:2020-01-22
  • Contact: Ma Guozhong E-mail:noaa_1113@126.com

Abstract:

To discuss the effects of agro-meteorological disasters on soybean yield in Heilongjiang. Based on the data of agro-meteorological disasters and soybean yield in Heilongjiang from 1974 to 2016, we analyzed the sequential variation characteristics of agro-meteorological disasters and soybean yield with the mathematical statistics method, and established the mathematical model based on the gray correlation analysis, constructed the disaster rate with the disaster-affected range and the disaster intensity, and divided the research period into two stages from 1982-1998 and 1999-2016. The results showed that: the agro-meteorological disasters had a negative impact on soybean yield in Heilongjiang; in the view of the disaster-affected range and the disaster intensity perspective, the drought disaster was the key agro-meteorological disasters to affect the soybean yield in Heilongjiang during 1982-1998 (phase 1); the flood had a great impact on disaster-affected range, and the effects of wind hail on the disaster intensity were great during 1999-2016 (phase 2). In conclusion, the most serious period for soybean yield is phase 1 (during 1982-1998); 4 types of disasters have a greater impact on the total yield and yield per unit area of soybean; on the second stage from 1999 to 2016, the impact of 4 types of disasters on the yield per unit ares is greater than that on the total yield of soybean.

Key words: meteorological disaster, soybean, disaster-affected range, disaster intensity, grey correlation analysis

CLC Number: