高级检索+

河北典型县域设施菜地土壤质量调查及其差异分析

Soil Quality Investigation and Spatial Variation of Protected Vegetable Fields in Typical Counties of Hebei Province

  • 摘要: 以河北省内已具有一定设施蔬菜生产规模的肃宁、饶阳、永清、定州、永年、乐亭、青县7个县的土壤作为研究对象,采用实地调研和田间取样的方法,研究了各项土壤理化及养分指标,以期了解河北省主要长年种植设施蔬菜地区的土壤质量情况。结果表明:取样的7个地区0~20 cm土层的土壤pH范围为6.55~8.42,电导率范围为0.68~1.93 mS·cm-1,总体呈中性或碱性,且均有不同程度盐渍化。各地设施蔬菜土壤有效养分状况差异较大且分布不平衡,并且土壤养分随土层深度的增加而降低。由此可知,河北省设施蔬菜土壤经过长期种植与过量施肥,导致土壤中残留养分均有着不同程度的积累,设施蔬菜土壤质量下降现象较为明显。综上可知,生产中应适量减少化肥用量,同时提高肥料利用率,降低对土壤质量的影响,减少养分损失。

     

    Abstract: The soil samples in Suning, Raoyang, Yongqing, Dingzhou, Yongnian, Laoting and Qingxian country, which have a certain scale of vegetable production in Hebei Province, were taken as the research objects.The soil physicochemical and nutrient indicators were studied by methods of field investigation and field sampling, in order to understand the soil quality in the main vegetable growing areas in Hebei Province.The results showed that the soil pH in 0-20 cm soil layer in 7 areas was 6.55-8.42,and the conductivity was 0.68-1.93 mS·cm-1.The soil was neutral or alkaline, and all of them were salinized to varying degrees.The soil available nutrients in greenhouses varied greatly and distributed unevenly, and the soil nutrients decreased with the increase of soil depth.It could be concluded that after long-term planting and excessive fertilization, the residual nutrients in the soil of protected vegetables in Hebei Province had accumulated to varying degrees, and the soil quality of protected vegetables had decreased obviously.Therefore, the amount of chemical fertilizer should be reduced appropriately in production, and the fertilizer utilization rate should be improved, so as to reduce the impact on soil quality and the loss of nutrients.

     

/

返回文章
返回