Spatio-temporal Variation Characteristics of Climate Resources during the Soybean Growing Season in Hulunbuir Region
Soybean is one of the important crops in China which occupies an important position in agricultural production.In order to analyze the effects of climate change on soybean planting pattern in Hulunbuir,the spatio-temporal variation characteristics of climate resources during the soybean growing season from 1992 to 2022 in Hulunbuir were analyzed,by using linear trend method,natural breakpoint method,inverse distance weight interpolation and other methods.The results could provide theoretical basis for developing soybean planting and guiding soybean production in cold and cool areas.The results showed as follows:From 1992 to 2022,the average temperature showed a declining trend during the sowing-emergence period of soybean,with a climate trend rate of-0.02 ℃·(10a)-1,while the temperature increased during the other four growth periods.The temperature was inversely proportional to the distance from the Greater Hinggan Mountains.The precipitation during the branching-flowering period showed a decreasing trend,with a climate tendency rate of-4.42 mm·(10a)-1,while it gradually increased over time during the other growth periods.The precipitation distribution gradually increased from west to east.The sunshine duration showed an increasing trend in the flowering-grain period,with a climate tendency rate of 17.5 h·(10a)-1,while it gradually decreased over time during the other growth periods.
万方数据
维普
