摘要
【目的】采用不同缓释氮肥在橡胶幼苗上的施用试验,以期为在橡胶树缓释氮肥研制及应用上提供理论依据。【方法】以橡胶苗为试验材料,选择4种缓释氮肥进行肥效试验,研究分析不同缓释氮肥在对橡胶苗各部位生物量和养分累积吸收量的影响。【结果】与施用尿素相比,除DMPP-尿素外,缓释氮肥可以显著增加橡胶苗根茎叶生物量及总生物量。各处理的总生物量为肥料棒(146.64 g)>腐植酸-脲醛(142.36 g)>包膜尿素(124.14 g)>DMPP-尿素(91.90 g)>尿素(80.21 g)>不施肥(30.50 g),腐植酸-脲醛与肥料棒处理的总生物量显著高于其它各处理,但两者间无显著差异。肥料棒处理橡胶苗各部位氮素累积总量和钾素累积总量均显著大于其他处理,其次为腐植酸-脲醛处理,而包膜尿素、腐植酸-脲醛及肥料棒处理间橡胶苗各部位磷素累积总量差异不显著。【结论】腐植酸-脲醛及肥料棒在橡胶苗上应用效果较好。
【Objective】The aim of this study was to provide a theoretical basis for the development and application of slow release nitrogen fertilizer for rubber trees through a rubber seedling fertilizer experiment.【Method】Four different slow-release nitrogen fertilizers were applied to rubber seedlings, and their effects on biomass and nutrient accumulation for each part of the rubber seedlings were investigated.【Result】Compared with urea application, in addition to DMPP-urea, slow-released fertilizer could increase the biomass of roots, leaves and total biomass of rubber seedlings. The average biomass of the six treatments was ranked from large to small: Fertilizer rods(146.64 g)>humic acid-urea aldehyde(142.36 g)>coated urea(124.14 g)>DMPP-urea(91.90 g)>urea(80.21 g)>CK(30.50 g), and there were no significant difference between humic acid-urea aldehyde and fertilizer rods and significantly higher than other treatments. The total nitrogen accumulation and potassium accumulation of fertilizer rods were significantly higher than that of other treatments, then the treatment of humic acid-urea aldehyde. However, there was no significant difference in the total phosphorus accumulation of coated urea, humic acid-urea aldehyde and fertilizer rod treatment.【Conclusion】The application of humic acid-urea aldehyde and fertilizer rod on rubber seedlings is better.
作者
贝美容
倪维茜
林清火
茶正早
刘海林
罗微
BEI Mei-rong;NI Wei-qian;LIN Qing-huo;CHA Zheng-zao;LIU Hai-lin;LUO Wei(Rubber Research Institute,Chinese Academy of Tropical Agriculture Sciences/Key Laboratory of Biology and Genetic Resources of Rubber Tree,Ministry of Agriculture and Rural Affairs/State Key Laboratory Incubation Base for Cultivation&Physiology of Tropical Crops/Soil and Fertilizer Research Center,Chinese Academy of Tropical Agricultural Sciences,Hainan Haikou 571101,China;College of Forestry,Hainan University,Hainan Haikou 570228,China)
出处
《西南农业学报》
CSCD
北大核心
2020年第12期2867-2871,共5页
Southwest China Journal of Agricultural Sciences
基金
海南省财政科技计划资助(ZDYF2018240)
中国热带农业科学院基本科研业务费专项资金(1630022017007,1630022017005)。
关键词
缓释氮肥
橡胶苗
生物量
养分积累量
Slow-released nitrogen
Rubber seedlings
Biomass
Nutrient accumulation
