西双版纳东风农场近20年橡胶园养分变化观察  

The Nutrients Dynamic of Natural Rubber Plantations in 20 Years in Dongfeng Farm of Xishuang-banna

作　　者：杨丽萍[1] 李春丽[1] 黎小清[1] 丁华平[1] 杨春霞[1] 

机构地区：[1]云南省热带作物科学研究所,云南景洪666100

出　　处：《热带农业科技》2015年第1期1-4,共4页Tropical Agricultural Science & Technology

基　　金：云南省科技创新强省计划项目(2009AB001);国家科技支撑计划项目(2011BAD30B00)

摘　　要：1987、1998、2008年对西双版纳东风农场胶园土壤和橡胶叶片的三次营养普查结果表明:1987-2008年的20年间,胶园土壤有机质、速效钾下降明显,分别降低39.24%和38.99%;胶树叶片N、P、K、Mg养分含量分别降低10.73%、14.29%、17.50%、22.22%;Ca则呈增加趋势,增加了59.76%。比较营养元素丰缺的样品比例,橡胶树叶片缺N、P、K、Mg样品比例分别增加27.12%、30.35%、11.94%、36.64%,而Ca丰富样品比例增加72.08%。东风农场胶树营养表现为缺N(38.22%)、缺P(31.55%)、缺K(12.74%)、缺Mg(51.74%);而Ca表现丰富(78.38%)。Investigations on nutrients of soil and leaves of rubber plantations in Dongfeng Farm were carried out in 1987, 1998, and 2008, respectively. The results showed that the OM, AK in rubber soil had significantly decreased in twen- ty years, which had decreased by 39.24% and 38.99%, respectively. And the contents of N, P, K, Mg in rubber leaves de- creased by 10.73%, 14.29%, 17.50% and 22.22%, respectively. While Ca content increased by 59.76%. Samples of defi- cient N, P, K, Mg in rubber leaves increased by 27.12%, 30.35%, 11.94% and36.64%, respectively. While Ca rich samples in- creased by 72.08%. The current nutritional status of rubber plantations in Dongfeng farm showed nitrogen deficien- cy （38.22%）, phosphorus deficiency （31.55%）, potassium deficiency（12.74%）, magnesium deficiency（51.74%） and calci- um rich（78.38% ）.

关 键 词：橡胶树 土壤 叶片 养分变化 西双版纳 

分 类 号：S794.1[农业科学—林木遗传育种]