河北滨海区土壤质地状况及与盐碱关系研究

为了掌握滨海区土壤质地分布及不同质地盐碱状况,为滨海区作物合理布局提供数据支撑,通过定点取样及软件分析、作图的方法,明确了河北滨海11县区农用地土壤以轻壤最多,达到249 229.38 hm2,占总农用地面积的35.0%,主要分布于沧州滨海县区的黄骅大部、海兴西部区域;沙壤质次之,主要分布于冀东滨海区的秦皇岛市三区、抚宁中东部、滦南西部,唐海东南部及乐亭姜各庄滨海区域,面积204 858.91 hm2,占总农用地面积的28.7%,粘质及重壤质主要分布于汉沽、芦台及丰南、唐海南部沿海,面积119 913.71 hm2,占总农用地面积的16.8%。从不同质地盐碱分析看,盐分高低次序为重壤质、中壤质、粘质、轻壤质、沙壤质、砂质。

Present Status of Soil Texture and Its Relationship with Salt Content in Coastal Areas of Hebei

In order to provide data support for rational crop distribution,the sampling and software analysis were used to make clear of soil texture distribution and saline status in 11 coastal counties of Hebei Province.The results showed that the area of light loam was the largest as 249 229.38 hm2,about 35.0% of the total agricultural land areas;it distributed mainly in most of Huanghua and western area of Haixing.Sandy loam was the second one,and mainly distributed in three districts of Qinhuangdao,east-central Funing,western Luannan,southeast Tanghai and Jianggezhuang area of Leting.The area of sandy loam was 204 858.91 hm2,about 28.7% of total agricultural land areas.Clay and heavy soil mainly distributed in Hangu,Lutai and southern coastal areas of Fengnan and Tanghai,whose area was 119 913.71 hm2,about 16.8% of total agricultural land areas.Based on the analysis of different texture soil,a descending order of soil salt content was heavy soil,loamy,clay,light loam,sand loam,sandy.