摘要
于2010年和2011年在江西省安远县和寻乌县这两大赣南甜橙生产县,共采集181个红壤枳砧甜橙园的土壤样品和叶片样品,进行营养元素含量测定,并对土壤和叶片相应营养元素含量进行相关性分析,为评价测土配方施肥是否适宜红壤甜橙园提供依据。结果表明:土壤碱解氮、交换性钙、交换性镁、有效铁和有效锌的丰缺状况在甜橙叶片对应营养元素丰缺水平上能得到一定程度的反映;土壤有效钾、有效磷、有效铜和有效硼的状况则难以在甜橙叶片对应营养元素丰缺水平上得到反映。相关性分析结果显示,只有2010年安远县甜橙园土壤有效Zn含量与叶片Zn含量呈显著正相关(P<0.05),其余土壤有效营养元素含量与叶片对应营养元素含量之间均无显著相关性。表明测土配方施肥不适宜红壤甜橙园,建议实行以叶片营养诊断为主、土壤诊断为辅的配方施肥策略。
Both soil and leaf samples were collected from 181 red soil orchards of sweet orange grafted on trifoliate orange [Poncirus trifoliata （L.） ] rootstocks in Anyuan and Xunwu, the two biggest citrus production counties in southern Jiangxi Province of China, and then analyzed for their nutrient element contents in 2010 and 2011. The aim was to realize relationship between soil and leaf nutrient elements and to provide the possibilities of formulated fertilization based on soil testing in sweet orange orchards in red soil areas. The results showed that the contents of available soil nutrient elements suchas nitrogen （N）, calcium （Ca）, iron （Fe）, magnesium （Mg） and zinc （Zn） in orchard soils could reflect, to some extent, the contents of corresponding nutrients in citrus leaves. A significant positive correlation （P 〈 0.05 ） was found between the contents of available Zn in soils and Zn contents in leaves in Anyuan county in 2010. However, the contents of soil available potassium （K）, phosphorus （P）, copper （Cu） and boron （B） correlated nonsignificantly with the contents of the corresponding nutrients in leaves.Therefore, formulated fertilization by soil testing is not suitable for sweet orange orchards in red soil areas. It is suggested that formulated fertilization should be mainly based on leaf diagnosis and supplemented by soil testing.
出处
《园艺学报》
CAS
CSCD
北大核心
2013年第4期623-632,共10页
Acta Horticulturae Sinica
基金
现代农业(柑橘)产业技术体系建设专项
国家自然科学基金项目(31201587)
国家公益性行业(农业)科研专项(200903023)
重庆市科技攻关计划项目(cstc2012gg-yyjsB80007)
关键词
甜橙
果园
土壤营养元素
叶片营养元素
相关性
., sweet orange
orchard
soil nutrient element
leaf nutrient element
correlation
