贵州农业科学2025，Vol.53Issue(7)：39-47,9.DOI:10.3969/j.issn.1001-3601.2025.07.005
贵州罗甸不同海拔火龙果园土壤养分分析与综合肥力评价
Analysis and Evaluation on Soil Nutrients and Comprehensive Fertility of Pitaya Orchards at Different Altitudes in Luodian,Guizhou
摘要
Abstract
[Objective]The current status in soil comprehensive fertility of pitaya orchards in Luodian County,Guizhou Province was investigated to provide the theoretical support for scientific fertilization and promotion of yield and quality of pitaya in local area.[Method]The pH,organic matter,total potassium,total nitrogen,total phosphorus,available potassium,available nitrogen and available phosphorus of 45 surface soil samples(0-20 cm)collected from pitaya orchards at＜450 m(Class A),450-550 m(Class B)and＞550 m(Class C)were analyzed by membership function analysis,correlation analysis,and soil fertility index method to analyze the soil fertility grade and soil nutrient status of pitaya orchards at three different altitudes in Luodian County.[Result]The soil pH showed an increasing first and then declining trend with increase of altitude.The soil pH of Class A and Class B was 6.08 and 6.57,which was suitable for planting pitaya.But the soil pH of Class C was 4.51 with strongly acidic,which was extremely lower than the suitable pH(6.0-7.5)range for planting pitaya.The average content of soil organic matter,total nitrogen and available nitrogen showed declining trend with increase of altitude.The average content of total potassium and available potassium showed an increasing trend with increase of altitude.The total potassium content in Class A was lower than Class B and Class C significantly,which indicated there was a potential risk of potassium deficiency for planting pitaya.[Conclusion]The soil comprehensive fertility of pitaya orchards at different altitudes in Luodian County is at medium level and the membership degree of total potassium is 0.19-0.38.The soil potassium content is the major factor influencing soil fertility in Luodian County.关键词
火龙果园/土壤肥力/pH/土壤养分等级/化学计量分析/罗甸Key words
pitaya orchard/soil fertility/pH/soil nutrient grade/stoichiometric analysis/Luodian分类
农业科技引用本文复制引用
官甲训,杨启豪,苏州,欧子艳,周玮,范菲菲,朱大雁,韦小芳,柴冠群..贵州罗甸不同海拔火龙果园土壤养分分析与综合肥力评价[J].贵州农业科学,2025,53(7):39-47,9.基金项目
贵州省黔南州科学技术局项目"酸性富硒土壤控酸活硒技术研究与示范"(黔南科合[2025]05号) （黔南科合[2025]05号）
佛山市铁人环保科技有限公司项目"根-叶协同调控火龙果等水果富硒技术研究与示范"(佛山铁人[2023]号) （佛山铁人[2023]号）
