摘要
在野外调查、取样和室内分析相结合的基础上,选择土壤pH、有机质及土壤主要的大中微量元素等测定项目作为评价指标,采用灰色关联度分析法对海南中西部25个代表性荔枝园的土壤肥力状况进行了综合评价。结果表明:按照等距法分级,参评荔枝园土壤肥力状况可分为三级:一级果园6个,占到参评果园总数的24%,二级果园5个,占参评果园总数20%,三级果园数量最多为14个,占果园总数56%;总体上海南中西部荔枝园的肥力状况较差,土壤养分较为贫瘠,且果园间的土壤养分含量差异较大。灰色关联度分析法可用于定量分析荔枝园土壤综合质量状况,从而摸清了区域尺度的土壤肥力分布,进而为荔枝园土壤合理利用和改良提供科学依据。
On the basis of investigation,sampling and laboratory analysis,soil pH,organic matter and soil medium and large trace elements determined as the evaluation indices.Through the grey correlation theory,the soil fertility status in 25 representatives of the central and western Hainan lychee orchard was quantitatively analysised.At the same time,a comprehensive evaluation of sorting and grading was made.The results showed that in accordance with the classification of the equidistance method,participants lychee garden soil fertility status could be divided into three levels：six to grade one,five to grade two,fourteen to grade three.Overall fertility status of the central and western Hainan litchi orchard is poor,barren soil nutrient.The soil fertility status of Litchi orchard is related to soil parent material and topography.The gray correlation theory can not only provide a scientific basis for rational utilization and optimize fertilization programs of lychee garden soil in the region,but also improve the litchi production.
出处
《热带作物学报》
CSCD
北大核心
2013年第10期1883-1887,共5页
Chinese Journal of Tropical Crops
基金
中央级科研院所基本科研业务费项目(No.1630032013018)
海南省自然科学基金项目(No.312054)
关键词
荔枝园
灰色关联度
土壤肥力
Lychee orchard
Grey system theory
Soil fertility
