洞庭湖区5个茶叶基地土壤的养分状况与肥力质量评价

Soil nutrient status and assessment for fertility quality of 5 tea bases of Dongting Lake region in Hunan province

通过野外采样和室内测定,研究了湖南省洞庭湖区5个茶叶基地茶园土壤的pH值和有机质、全N、全P、全K,有效N、有效P、有效K、缓效K含量,并运用模糊综合评判法对这5个茶叶基地土壤的肥力质量进行了综合评价.结果表明,洞庭湖区5个茶叶基地土壤的pH值偏低;全N、全P含量偏低;有机质、有效N、有效P、有效K含量中等;全K、缓效K含量较高.雪峰山茶场、君山茶场的肥力质量等级为中上等;金井茶场、金华茶场和羊鹿茶场的肥力质量等级为中下等.

Taking the nine indices, i.e., soil pH, organic matter, total N, P and K, available N, P and K, slowly available K, as assessment parameters, by use of fuzzy comprehensive assessment, soil fertility quality was evaluated comprehensively for 5 tea bases of Dongting Lake region in Hunan province through field sampling and laboratory analysis. The results showed that contents of soil pH, total N and P contents were all low, contents of organic matter, and available N, P and K were middle, contents of total K and slowly available K were high, the soil fertility quality of the tea gardens Xuefengshan mountain and Junshan mountain were in the second grade, and that in the tea gardens of Jinjing, Jinhua and Yanglu were in the third grade.