Welcome to Journal of Agriculture,

Journal of Agriculture ›› 2020, Vol. 10 ›› Issue (11): 37-42.doi: 10.11923/j.issn.2095-4050.cjas20191000250

Special Issue: 玉米 农业气象

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Grey Correlation Analysis of Summer Corn Yield and Main Meteorological Factors

Yang Ning(), Kong Linggang, Zhen Tiejun, Xia Zhenzhen, Yang Hui, Wang Luocai, Zheng Guoxi   

  1. Zaozhuang Agricultural and Mechanical Technology Promotion Center, Zaozhuang 277800, Shandong, China
  • Received:2019-10-31 Revised:2020-03-27 Online:2020-11-20 Published:2020-11-18

Abstract:

To better analyze the influence of main meteorological factors on summer maize yield, we used grey correlation analysis method to study their grey correlation from 2011 to 2018 in Zaozhuang City, Shandong Province. The results showed that the grey correlation between summer corn yield and major meteorological factors followed an order of September temperature (0.9562) > June to September temperature (0.9449) > June temperature (0.9312) > July temperature (0.9283) > August temperature (0.9157) > June to September light hours (0.8578) > July light hours (0.8393) > September light hours (0.8283) > June light hours (0.8212) > August light hours (0.7803) > June to September precipitation (0.7623) > September precipitation (0.6783) > August precipitation (0.6239) > June precipitation (0.5842) > July precipitation (0.5409). The temperature was the main factor, followed by light hours, and then was the precipitation. By analyzing the grey correlation degree between summer maize yield and main meteorological factors, the study could provide certain references for summer maize planting areas in huang-huai-hai region.

Key words: Zaozhuang City, Summer Corn, Yield, Meteorological Factors, Grey Relativity Analysis

CLC Number: