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.