脲醛缓释肥料棒对橡胶苗生长和养分吸收的影响  

Effects of Urea Formaldehyde Slow Release Fertilizer Rod on Growth and Nutrient Absorption of Rubber Tree Seedlings

作　　者：刘海林[1] 杨凯[1] 杨红竹[1] 林清火[1] 罗微[1] 茶正早[1] LIU Hai-lin;YANG Kai;YANG Hong-zhu;LIN Qing-huo;LUO Wei;CHA Zheng-zao(Rubber Research Institute,Chinese Academy of Tropical Agricultural Sciences/Key Laboratory of Biology and Genetic Resources of Rubber Tree,Ministry of Agriculture and Rural Affairs/Soil and Fertilizer Research Center,Chinese Academy of Tropical Agricultural Sciences,Hainan Haikou 571101,China)

机构地区：[1]中国热带农业科学院橡胶研究所/农业农村部橡胶树生物学与遗传资源利用重点实验室/中国热带农业科学院土壤肥料研究中心,海南海口571101

出　　处：《西南农业学报》2021年第12期2679-2684,共6页Southwest China Journal of Agricultural Sciences

基　　金：中国热带农业科学院基本科研业务费专项资金(1630022017005);国家重点研发计划(2020YFD1000600);现代农业产业技术体系建设专项资金项目(CARS-33)。

摘　　要：【目的】研究脲醛缓释肥料棒对橡胶苗生长和养分吸收的影响,为脲醛缓释肥料棒在橡胶树上应用提供理论依据。【方法】以脲醛氮占总氮的0%、25%、50%、75%的脲醛缓释肥料棒为试验肥料,采用橡胶苗盆栽试验,测定橡胶苗的株高、茎粗、生物量及氮磷钾吸收量。【结果】脲醛氮占总氮50%的脲醛缓释肥料棒处理橡胶苗株高和茎粗均为最大,分别为149.32 cm和17.96 mm,但与常规肥料处理差异不显著。随着脲醛氮占肥料总氮比例的增加,橡胶苗全株生物量、氮磷钾吸收量以及肥料利用率均表现为先增后减,脲醛氮占总氮50%的脲醛缓释肥料棒处理全株生物量、氮磷钾吸收量以及肥料利用率均为最大。【结论】脲醛缓释肥料中脲醛氮占总氮50%时最有利于橡胶苗生长和橡胶苗养分吸收。【Objective】The present paper aimed to study the effect of urea-formaldehyde slow-release fertilizer rods on the growth and nutrient absorption of rubber seedlings,and provide a theoretical basis for the application of urea-formaldehyde slow-release fertilizer rods on rubber trees.【Method】Using urea-formaldehyde slow-release fertilizer with 0%,25%,50%,and 75%of total nitrogen as the test fertilizer,the pot experiment of rubber tree seedlings was carried out to study the effects of different urea-formaldehyde slow-release fertilizer rods on the growth and nutrient absorption of rubber tree seedlings.【Result】When the urea-formaldehyde slow-release fertilizer rod with 50%urea-formaldehyde nitrogen was applied,the plant height and stem diameter of the rubber seedlings were the largest,which were 149.32 cm and 17.96 mm,respectively.But it was not significantly different from conventional fertilizer treatment.With the increase of the proportion of urea-formaldehyde nitrogen,the whole plant biomass,nitrogen absorption,phosphorus absorption,potassium absorption and fertilizer use efficiency of the rubber tree seedlings all showed as increased first and then decreased.When the urea-formaldehyde slow-release fertilizer rod with 50%urea-formaldehyde nitrogen was applied,the whole plant biomass,nitrogen absorption,phosphorus absorption,potassium absorption and fertilizer use efficiency of the rubber tree seedlings were the largest.【Conclusion】It is most beneficial to the growth of rubber seedlings and nutrient absorption of rubber tree seedlings when the urea-formaldehyde slow-release fertilizer rod with 50%urea-formaldehyde nitrogen.

关 键 词：脲醛缓释肥料棒 橡胶苗 生长 养分吸收 

分 类 号：S14[农业科学—肥料学]