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采用灰色关联度的方法,研究了吉林省不同生态区气象因子对玉米产量的影响。结果表明:在中部地区,日照时数和积温与玉米产量的关联度最为密切;在东部地区,玉米抽雄吐丝后的积温和日照时数与玉米产量的关联度最为密切;在西部地区,降水与玉米产量的关联度最为密切。在中东部地区,积温增加会带来产量的增加,而在西部地区,积温增加产量反而减少。因此,在生产上,应合理选用品种,并采取相应的栽培技术措施,以便充分利用自然资源。
Using the method of gray relational degree, the influence of meteorological factors on maize yield in different ecotopes in Jilin Province was studied. The results showed that in the central region, the correlation between sunshine duration and accumulated temperature was the most closely related to the corn yield. In the eastern region, the correlation between accumulated temperature and sunshine hours after mandarin pollination and maize yield was the most significant. In the western region, The correlation with corn production is most closely related. In the eastern region, an increase in accumulated temperature will result in an increase in output, while in the western region, the increase in accumulated temperature will actually decrease. Therefore, in terms of production, we should make rational use of the varieties and take corresponding cultivation techniques to make full use of natural resources.