随县澴潭镇油茶园土壤养分现状及评价

Evaluation of Soil Nutrient Status of Camellia Oleifera Orchard in Huantan Town of Sui County

针对随县澴潭镇油茶种植中土壤养分不均、油茶产量不稳等问题,研究其土壤养分和土壤肥力状况,为油茶土壤养分诊断及科学施肥提供依据。采集随县典型油茶园0~40 cm土层样品,测定土壤pH值、有机质、全氮、速效磷、速效钾、有效硼及有效锰的含量,与全国第二次土壤普查分级标准进行比对评价,并对土壤pH值和养分含量进行相关性分析。结果表明:①土壤pH值总体上偏酸性。②土壤有机质含量中等,全氮含量较缺乏,速效磷、速效钾、有效硼含量极缺乏,有效锰含量非常充足。③土壤pH值与土壤有机质、全氮、速效磷、速效钾、和有效锰含量均呈显著正相关关系。综上所述,建议适当增施磷、钾肥及硼肥,并密切关注土壤pH值的动态变化。

Aiming at problems of unbalanced soil nutrients and unstable yield of Camellia oleifera in Sui County,the status of soil nutrients and soil fertility were studied and evaluated to provide the basis for scientific fertilization and soil nutrient diagnosis.0~40 cm soil samples were collected to analyze soil pH and the contents of organic matter,total nitrogen,available phosphorus,available potassium,available boron and available manganese.Soil fertility was compared and evaluated with soil nutrient classification standard of the second national soil survey.Correlation analysis of pH soil nutrient content in C.Oleifera orchard was conducted.The results showed that:①Soil pH was slightly acidic.②The soil organic matter content reached the intermediate level.The soil total nitrogen content was in the deficient level.The contents of available phosphorus,available potassium and available boron in soil were extremely low.The soil available manganese content was abundant.③Soil pH was significantly positively correlated with the content of organic matter,total nitrogen,available phosphorus,available potassium,and available manganese in soil.In conclusion,phosphorus,potassium and boron feitilizer should be added appropriately and the variation characteristic of soil pH should be given close concern.