广东从化猴耳环栽培基地土壤肥力综合评价

Integrated Evaluation on Soil Fertility in Cultivation Base of Pithecellobium clypearia in Conghua of Guangdong Province

目的:对广东从化猴耳环栽培基地土壤肥力进行综合评价。方法:对基地4个坡向0～20cm和20～40cm的土壤样品进行理化性状测定和分析,并采用改进的内梅罗综合指数对土壤肥力进行了综台评价。结果:土壤pH偏低,有机质含量贫乏,全氮、全磷和全钾含量低。有效氮和有效钾含量丰富,有效磷含量较低,矿质元素含量偏低。东坡和西坡的有效氮,有效钾与有机质含量比南坡和北坡高。结论:所有样品的土壤综合肥力系数均低于0.9,土壤肥力处于贫瘠水平。

Objective： Investigation the status of soil fertility of the cultivation base of Pithecellobium clypearia Benth. Methods： The physical and chemical properties of the 0 ~ 20 cm and 20 -40 cm soil from four slope were measured and analyzed, and the modified Nemoro index method was used to evaluate the soil fertility. Results： The results showed that soil pH, total N＇ Pand K contents were all low, and the organic matter was poor. The available N and K were rich, while the available Pand mineral element were low. The available N, K and the organic matter of the east and west slope were richer than those of the south and north. Conclusion： The comprehensive coefficient of the soil fertility of all samples was below 0.9 and the soil was at the barren level.