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Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (28): 158-164.doi: 10.11924/j.issn.1000-6850.casb20191100858

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Grey Correlation Analysis of the Influence Factors of Grain Yield in Shaanxi: Empirical Research Based on Panel Data

Song Xifang(), Yao Hairong, Zhang Xiaofei, Zhang Jianguo, Chen Ni, Chang Xiaojian, Zhang Chenyang   

  1. Xi’an Agricultural Technology Extension Center, Xi’an 710061
  • Received:2019-11-19 Revised:2020-09-01 Online:2020-10-05 Published:2020-09-23

Abstract:

The grain yield from 1999 to 2017 in Shaanxi was divided into two stages and 10 influence factors of grain yield were analyzed dynamically with grey correlation analysis method, and the data processing was realized by SAS statistical software, aiming to provide data support for improving grain productivity and enhancing grain security in Shaanxi. The results showed that the most important factor affecting the grain yield in Shaanxi was the grain planting area. The effect of effective irrigation area and rural employment on grain yield was gradually enhanced. It was imperative to reduce the amount of pesticides and fertilizers and increase their efficiency. On the macro level, natural factors were still the first to influence grain output, the impact of scientific and technological factors was increased, and the last was policy factor. The important measures to ensure food security in Shaanxi are improving the quality of cultivated land, stabilizing the sown area of grain crops, reducing the amount and increasing the efficiency of pesticides and fertilizers, and promoting green grain production.

Key words: gain yield, influence factors, grey correlation analysis, Shaanxi Province, SAS

CLC Number: