Research on Climate Suitability for Soybean Cultivation in Hulunbuir Area from 1991 to 2022

doi:10.11924/j.issn.1000-6850.casb2025-0656

Abstract

Abstract:

This study utilized meteorological data and soybean growth period data from 1992 to 2022 to construct a climate suitability model. Employing methods such as linear trend analysis, natural break point method, and inverse distance weighting interpolation, the temporal and spatial variations in soybean planting climate suitability were analyzed. Additionally, a zoning study of suitable areas for soybean planting was conducted. The results indicated that under the background of climate change, the overall comprehensive climate suitability for soybean planting in Hulunbuir region showed a fluctuating upward trend with a slight decline in the later period. Among them, the temperature and precipitation suitability showed a fluctuating upward trend, while the sunshine suitability showed a fluctuating upward trend in the early period and a fluctuating downward trend in the later period. Spatially, the distribution of light, temperature, water and comprehensive suitability was significantly different. The high-value area of comprehensive suitability was located in the east, followed by the west, and the central area had the lowest comprehensive suitability. The temperature suitability decreased from the east and west sides to the middle. The precipitation suitability decreased from east to west. The sunshine suitability showed an opposite spatial distribution trend to the precipitation suitability, increasing from east to west. Overall, the southeastern part of Hulunbuir City had relatively suitable climate conditions for soybean planting, mainly including most of Molidawa Daur Autonomous Banner, Arong County, the eastern part of Zhalantun City, and the southeastern part of Oroqen Autonomous Banner.

Key words: Hulunbuir, soybeans, climate, suitability, zoning, growth period, evaluation model

YOU Si, JIANG Huyuan, YOU Wei, LIN Cong. Research on Climate Suitability for Soybean Cultivation in Hulunbuir Area from 1991 to 2022[J]. Chinese Agricultural Science Bulletin, 2025, 41(36): 119-131.

Figures/Tables 17

References 26

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发育期	时间
播种—出苗	5月11—30日
出苗—分枝	5月31日—7月10日
分枝—开花	7月11—16日
开花—鼓粒	7月17日—8月21日
鼓粒—成熟	8月22日—9月20日

发育期	时间
播种—出苗	5月11—30日
出苗—分枝	5月31日—7月10日
分枝—开花	7月11—16日
开花—鼓粒	7月17日—8月21日
鼓粒—成熟	8月22日—9月20日

发育期	理论需水量
播种—出苗	26.9
出苗—分枝	95.7
分枝—开花	18.9
开花—鼓粒	222.3
鼓粒—成熟	186.2

发育期	理论需水量
播种—出苗	26.9
出苗—分枝	95.7
分枝—开花	18.9
开花—鼓粒	222.3
鼓粒—成熟	186.2

发育期	日最适日照时数/h	b
播种—出苗	9.37	5.05
出苗—分枝	9.03	4.87
分枝—开花	8.75	4.72
开花—鼓粒	8.31	4.48
鼓粒—成熟	7.75	4.18