粤东沿海第一重山土壤理化性质调查与分析

Investigation and analysis on soil physical and chemical properties in coastland of eastern Guangdong Province

为摸清粤东沿海第一重山土壤理化性质,全面了解土壤状况,在汕头市沿海第一重山的典型区域选取12个标准地进行土壤取样,对土壤容重、含水量、孔隙度等物理性状和pH、有机质、氮磷钾养分等化学性状进行分析。结果表明,粤东沿海第一重山的土壤紧实,容重大,土壤总孔隙度和毛管孔隙度低,通气性差,物理性状较差。粤东沿海第一重山的土壤呈强酸性,有机质、有效磷、速效钾、全氮和全磷含量低,土壤化学性状较差。针对粤东沿海第一重山土壤贫瘠,且盐雾频繁、风大和干旱等生境特点,人工造林后需定期抚育,同时增施土壤改良剂、磷肥和有机肥以改良土壤环境。

In order to find out the physical and chemical properties of soil in the first mountain in coastland of eastern Guangdong Province,and comprehensively understand the soil condition,twelve standard sites were selected for soil sampling in typical areas in the first mountain in coastland of Shantou.The physical properties such as soil bulk density,water content,porosity,and the chemical properties such as pH,organic matter,nitrogen,phosphorus,potassium nutrients were analyzed.The results showed that the soil in the first mountain in coastland of eastern Guangdong Province was compact and bulky,with large bulk density,low total soil porosity and capillary porosity,poor ventilation.The soil was strongly acidic,low organic matter,available phosphorus,fast-acting potassium,total nitrogen,total phosphorus.In view of the characteristics of the first mountain in coastland of eastern Guangdong Province,such as poor soil,frequent salt spray,strong wind and drought,regular tending should be done after afforestation.At the same time,soil amendments,phosphate fertilizer and organic fertilizer should be added to improve the soil environment.