海南荔枝园土壤磷淋溶研究  

Leaching Pattern of Phosphorus in Litchi Orchard Soil in Hainan

作　　者：戴俊 郝立冬 付登强[2] 刘德福 DAI Jun;HAO Lidong;FU Dengqiang;LIU Defu(Qionghai Tropical Crops Service Center,Qionghai 571400,China;Coconut Research Institute of Chinese Academy of Tropical Agricultural Sciences,Wenchang 571339,China;School of Agronomy and Life Sciences,Zhaotong University,Zhaotong 657000,China)

机构地区：[1]琼海市热带作物服务中心,海南琼海571400 [2]中国热带农业科学院椰子研究所,海南文昌571339 [3]昭通学院农学与生命科学学院,云南昭通657000

出　　处：《昭通学院学报》2024年第5期98-101,共4页Journal of Zhaotong University

摘　　要：选择海南东北部4种不同母质土壤的荔枝园,通过采样调查与室内分析,比较研究了荔枝园土壤养分状况、土壤磷淋出量与溶出量、地表径流磷含量等,旨在了解不同荔枝园土壤磷淋溶特性,为荔枝园施肥管理与农业面源污染防控提供参考。研究结果表明,荔枝园土壤有效磷呈不同程度积累,不同母质荔枝园土壤有效磷积累顺序为:浅海沉积物>滨海沉积物>花岗岩>玄武岩;不同母质荔枝园土壤磷淋出量、溶出量和径流磷浓度与土壤有效磷含量一致;4个荔枝园径流总磷浓度(0.062~0.548 mg/L)均超过0.02mg/L,存在导致水体富营养化的风险,尤其是浅海沉积物和滨海沉积物发育的,有效磷含量高、含砂量大的荔枝园土壤磷淋溶风险极高。In order to understand the phosphorus leaching characteristics of different litchi orchards,and provide reference for fertilization management and agricultural non-point source pollution prevention and control of litchi orchards.Four kinds of litchi orchards with different soil parent materials in northeastern Hainan were selected.Through sampling investigation and indoor analysis,the soil nutrient status,soil phosphorus leaching and dissolution,surface runoff phosphorus content,etc.of litchi orchards were compared and studied.The results showed that soil available phosphorus in litchi orchard accumulated differently,and the sequence of soil available phosphorus accumulation in litchi orchard of different parent materials was:shallow sea sediment>coastal sediment>granite>basalt.The amount of leaching phosphorus,dissolved phosphorus and the concentration of phosphorus in runoff from different parent materials were consistent with the content of soil available phosphorus.The total phosphorus concentration in the runoff of the four litchi orchards exceeded 0.02 mg/L,which led to the risk of water bodies,especially the soils originated from shallow sea sediments and coastal sediments.The risk of phosphorus leaching in the soil of litchi orchards with high available phosphorus content and large sand content was extremely high.

关 键 词：荔枝 土壤 磷 淋溶 海南 

分 类 号：S667.1[农业科学—果树学]