建平县日照时数变化特征分析及对农业生产的影响

Analysis of Variation Characteristics of Sunshine Hours in Jianping County and Its Impact on Agricultural Production

选择建平县1971—2021年逐月日照时数观测数据,利用线性趋势的数理统计方法对建平县日照时数变化特征展开分析,并探究了日照时数变化对农业生产的影响。结果表明:近51年建平县日照时数总体呈减少的变化趋势,线性倾向率为-28.203 h/10年;21世纪以来,建平县日照时数整体上呈减少趋势,尤其是近10年来减少趋势较显著。建平县3—10月各个月份的日照时数均呈减少变化趋势。建平县春、夏、秋三季日照时数均表现为减少的变化规律。建平县日照时数的减少会对当地谷子、玉米、小麦等粮食作物,以及豆角、番茄、黄瓜、西葫芦、草莓、西瓜、甜瓜等设施作物的健康生长造成不利影响,会影响作物的正常光合作用,使得作物产量和品质下降。

Based on the monthly sunshine hours observation data of Jianping County from 1971 to 2021, this paper first analyzes the variation characteristics of sunshine hours in Jianping County by using the mathematical statistical method of linear trend, and explores the impact of sunshine hours on agricultural production. The results show that the sunshine hours in Jianping County have a decreasing trend in the past 51 years, and the linear tendency rate is-28.203 h/10 years;Since the 21st century, the sunshine hours in Jianping County have shown a decreasing trend as a whole, especially in the past decade. The sunshine hours of Jianping County from March to October showed a decreasing trend. The sunshine hours in spring, summer and autumn in Jianping County showed a decreasing law.The reduction of sunshine hours in Jianping County will adversely affect the healthy growth of local grain crops such as millet, corn and wheat, as well as facility crops such as beans,tomatoes, cucumbers, zucchini, strawberries,watermelons and melons, affect the normal photosynthesis of crops, and reduce crop yield and quality.