摘要
以1290个土地样品分析数据为依据,对冀西北农牧交错带张北县土壤养分时空变异与生产特性进行了分析研究,结果表明:张北县土壤pH值为8.23,土壤有机质和全氮含量分别20.4g/kg和1.05g/kg,土壤碱解氮、速效磷和速效钾含量分别为80.5mg/kg、20.6mg/kg和181.1mg/kg,和80年代相比均有明显地提高;土壤养分空间分布规律为东南部坝头区高于中部平原区,中部平原区高于西北部丘陵区。随着人类生产活动对土壤性质影响的提高,土壤养分的时空变异性增加,根据张北全县及不同分区的土壤养分时空分异提出适宜的农业生产发展建议。提高土壤有机质和氮含量仍是张北县土壤肥力提高的前提基础,保证土壤中磷和钾的稳定供应对保持土壤肥力、作物高产也是十分必要的。
In this study,Zhangbei County in agro-pasturage ecotone of northwest Hebei Province was taken as the research site,its spatial and temporal variability of soil nutrient and production characteristics were analyzed.Results showed that soil pH value is 8.23,organic matter and total nitrogen content are 20.4 g/kg and 1.05 g/kg respectively,alkaline nitrogen,available phosphorus and available potassium content are 80.5 mg/kg,20.6 mg/kg and 181.1 mg/kg respectively,soil nutrient content is higher higher than that in 80＇s,soil nutrient content in southeastern batou zones is higher than that in central plain zones,and soil nutrient content in central plain zones is higher than that in northwestern hilly zones.With the influence of human activity on soil properties,spatial and temporal variability of soil nutrient increase,and according to soil nutrient status of Zhangbei County and different zones,development proposes for agriculture production were recommended.Increasing soil organic matter and nitrogen content is the basis for improvement of soil fertility,it is also necessary to ensure soil phosphorus and potassium steady supply for maintaining soil fertility and increasing crop yield.
出处
《干旱区资源与环境》
CSSCI
CSCD
北大核心
2014年第3期86-90,共5页
Journal of Arid Land Resources and Environment
基金
河北省科学技术研究与发展计划项目(06220901D-1)资助
关键词
土壤养分
时空变异
生产特性
农牧交错带
张北县
soil nutrient
spatial and temporal variability
production characteristics
agro-pasturage ecotone
Zhangbei County
