韶关市武江区江湾镇土壤养分现状调查与分析

Investigation and Analysis of Soil Nutrients in Jiangwan Town of Wujiang District of Shaoguan City

为调查韶关市武江区江湾镇耕地土壤主要养分状况,指导该镇农户合理种植经济作物、科学施肥及改良土壤.实地取样和测定了江湾镇6个行政村9个农田、6个林地土壤的p H、有机质、全氮、碱解氮、有效磷、速效钾等6项指标,并对其土壤肥力进行综合评价.结果表明,江湾镇土壤p H普遍呈弱酸至酸性;养分状况:农田土壤有机质、全氮、碱解氮、有效磷及林地土壤全氮含量普遍处于中等水平,个别处于缺乏水平;林地土壤有机质、碱解氮含量普遍处于中等或缺乏水平,有效磷含量差异明显;农田和林地土壤速效钾含量都处于缺乏状态.根据江湾镇耕地的养分状况,提出了一系列的土壤改良措施,以期提高土壤肥力和肥料利用率,达到农作物增产及提高品质目的.

This paper investigates the main nutrient status of cultivated soil in Jiangwan Town, Wujiang District, Shaoguan City, and provides the basis for rationalizing the farmers1 planting of economic crops, scientific fertilization and improved soil. The soil pH, organic matter, available potassium, available phosphorus, total nitrogen and alkali - hydrolyzable nitrogen were measured and measured in nine farmland of Jiangwan town, and the soil fertility was evaluated comprehensively. The results showed that soil pH in Jiangwan town was weakly acidic to acidic. Nutrient status： soil organic matter, total nitrogen, available phosphorus, total nitrogen, alkali-hydrolyzed nitrogen and soil total nitrogen content were generaQy rich or medium level. Soil organic matter, The content of available N was generally moderate or lacking level, and the available phosphorus content was obviously different. The available potassium content in farmland and forest land was in a state of lack of According to the nutrient status of cultivated land in Jiangwan town, a series of soil improvement measures were put forward in order to improve the soil fertility and fertilizer utilization rate, to achieve crop yield and improve quality.