寿阳县土壤墒情特征分析及其对农业生产的影响

目的]研究寿阳县土壤墒情特征变化及其对农业生产的影响。方法]根据我国北方旱作区的实际情况,选取典型旱作区的山西寿阳县为研究对象,主要选用寿阳气象局农气观测站和国家旱农寿阳试验站的土壤墒情资料,采用多种分析方法,对寿阳县土壤墒情特征进行分析,找出该县土壤墒情时空变化规律。结果]土壤墒情的时间变化受降水分布影响较大,有明显的季节变化规律,冬、春、夏季墒情较差,秋季墒情较好;空间上,不同土层间土壤水分变化差异较大,土壤水分垂直变化表现为愈接近地表由于受外界气候的影响较大,变异系数则较大,而随着土层的加深变异系数逐渐减小。结论]根据该县土壤墒情时空变化规律,分析其对当地农业生产的影响,更好地指导农业生产实践,优化种植结构,增强农业抵御自然灾害的能力,提高农民科学生产的积极性。

Analysis on the Characteristics of Soil Moisture and its Impact on Agricultural Production in Shouyang County

Objective] The research aimed to study the characteristics of soil moisture and its impact on agricultural production in Shouyang county.Method]According to the actual situation of the dry farming areas of northern China,Shouyang county as a typical case of arid farming area was analyzed by using soil moisture data of agricultural weather station of Shouyang Bureau of Meteorology and National arid agricultural experiment station of Shouyang,the soil moisture characteristics of Shouyang county was analyzed by using variety analysis method,the temporal and spatial variance of soil moisture in Shouyang county is identified.Result]The time variation of soil moisture effect by the distribution of precipitation and have significant seasonal variation,the soil moisture of winter,spring and summer are relatively poor,autumn soil moisture is fairly good.Spatial difference,soil moisture change difference is bigger among the different soil layer,the vertical change of soil moisture more close to the surface due to the impact of external climate,coefficient of variation is bigger,and gradually decreases as the coefficient of variation of soil depth.Conclusion]According to the temporal and spatial variance of soil moisture in Shouyang county,the effect of soil moisture on local agricultural production is estimated to guide actual agricultural production,optimize the structure of farming,enhance the ability agriculture resisting natural calamities,improve farmer’s enthusiasm for scientific agricultural production.