Climate Suitability Variation of Maize Under Climate Change in Wengniute of Inner Mongolia

doi:10.11923/j.issn.2095-4050.cjas2021-0190

Abstract

Abstract:

To reveal the effects of climate change on different growth stages of maize is of great significance to improving maize planting layout, breeding new maize varieties and ensuring high and stable yield of maize. Based on the daily meteorological data from 1981 to 2018 in Wengniute Banner of Chifeng City in Inner Mongolia, and combined with the climate suitability index of maize growth, the climate suitability model of maize in Wengniute Banner was used to calculate and analyze the suitability of light, temperature, precipitation and comprehensive climate of maize and their variation characteristics during the whole growth period and at main growth stages. The results showed that during the whole growth period of maize from 1981 to 2018, the suitability of light, temperature and precipitation was 0.72, 0.94 and 0.60 respectively, and the comprehensive climate suitability was 0.74, indicating that the climatic conditions were relatively suitable for maize planting. Under the background of climate change, temperature suitability of maize decreased significantly from seedling emergence to jointing. Light suitability increased significantly from jointing to flowering. From flowering to milky ripeness stage, light suitability increased significantly, precipitation suitability and comprehensive climate suitability decreased significantly. On the whole, the suitability of light and temperature of maize in Wengniute Banner is high and relatively stable, while the low and unstable precipitation suitability is the main limiting factor affecting maize growth and development in the study area.

Key words: maize, climate change, precipitation suitability, temperature suitability, light suitability

ZHANG Yingjie, WANG Haimei, LI Xinyang. Climate Suitability Variation of Maize Under Climate Change in Wengniute of Inner Mongolia[J]. Journal of Agriculture, 2023, 13(2): 83-88.

Figures/Tables 4

References 37

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