海南省琼中县橡胶园土壤磷素空间变异特征及磷肥分区管理分析
发布时间:
热带作物学报2014,35(2):369—374
Chinese Journal of Tropical Crops
海南省琼中县橡胶园土壤磷素空间
变异特征及磷肥分区管理分析
覃怀德,吴炳孙,吴 敏,韦家少,何 鹏 ,王大鹏,高 乐
中国热带农业科学院橡胶研究所.海南儋州 571737
摘 要 运用地统计学和GIS相结合对琼中县橡胶同土壤磷素营养进行了空间变异特征及分区管理研究。结果 表明.琼中县胶园各土层土壤全磷和有效磷含量的最大相关距离是17.23~52.09 km,全磷含量以大块状变异为
主,有效磷含量各等级的分布为大、小块状交叉分布;琼中县橡胶园O~20 em土层、20~40 am土层全磷含量处
于第五等级的极低水平的比例分别为91.22%和82.8 .0~20 cm土层有效磷含量多数处于中等偏上水平,而 20 4O cm土层有效磷含量处于第5等级及以下的极低水平的比例为60.6%:应用空间叠加方法.进行了橡胶园 土壤磷素管理分区.琼中县胶园可分为11个管理分区.在胶园施肥管理中应根据不同管理分区的特点采取不同 的磷素营养管理措施 关键词
橡胶园;土壤磷素:空间变异;分区管理
文献标识码 A
中图分类号 S158.3
Spatial Variability and Regionalized Management
of Soil Phosphorus Nutrients in the Rubber
Plantation in Qiongzhong county
QIN Huaide,wU Bingsun,wU Min,WEI Jiashao,
HE Peng ,WANG Dapeng,GA0 Le
Rubber Research h titute, A rAS.Danzhou,Hainan 571 3 7
hina
Abstract Geostatistics combined with GIS were applied to analyze the spatial variability and regionalized
management of soil phosphorus(P)in Qiongzhong County.The results showed that the maximum correlative distance
of Total P,available P in content in different soil layers were between 1 7.23 km and 52.09 km.Spatial variability
of total P was large block scale,and spatial variability of available P was large block scale and small lock scale.
Percentage of total P in soi1(0—20 am)and s0il(20—4O cm)under ifve level was 91.22%and 82.8%.Available P in s0il (O一20 em)distributed mainly in medium to high level,but percentage ofavailable P in s