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不同施肥方式对红楠生长及营养特性的影响

徐嘉科1,陈闻2**,王晶2,费行海2   

  1. (1浙江省舟山市岱山县东沙镇人民政府, 浙江舟山 316200; 2浙江省舟山市林业科学研究院, 浙江舟山 316000)
  • 出版日期:2015-05-10 发布日期:2015-05-10

Effects of different fertilization strategies on growth and nutrition characteristics of Machilus thunbergii.

XU Jia-ke1, CHEN Wen2**, WANG Jing2, FEI Xing-hai2   

  1. (1Dongsha Town People’s Government, Daishan County, Zhoushan 316200, Zhejiang, China; 2Zhoushan Forestry Academy,  Zhoushan 316000, Zhejiang, China)
  • Online:2015-05-10 Published:2015-05-10

摘要:

为了解不同施肥方式对红楠(Machilus thunbergii)苗木生长及营养特性的影响,设置了5种不同施肥方式的田间试验,即不施肥(CK)、一次性施肥(DF)、线性施肥(LF)、平均施肥(AF)以及指数施肥(EF)。结果表明:红楠苗木的苗高、地径生长量及生物量按以下顺序递减:EF>AF>LF>DF>CK。EF的苗高和地径显著高于DF和CK(P<0.05),总生物量显著高于其余4种处理(P<0.05),而AF、LF和DF三者之间没有显著差异。EF处理的苗木各器官氮、磷、钾养分含量均要高于其余4种处理,而AF、LF和DF三者之间的养分含量差异性并不显著。与DF、LF和AF相比,EF的施肥效率分别提高了0.89、1.42和1.73倍。
 
 

关键词: 气候资源, 时空变化, 极端灾害, 冬种作物, 气象灾害, 气候变化

Abstract: A field experiment was conducted in a nursery of Zhoushan Forestry Institute in 2013 to compare the effects of different fertilization strategies \[i.e. no fertilization (CK), onetime fertilization (DF), linear fertilization (LF), average fertilization (AF) and exponential fertilization (EF)\] on growth and nutritional characteristics of M. thunbergii seedlings. The results showed that the treatment effect on plant height, ground diameter and biomass followed the order of EF>AF>LF>DF>CK. The height and basal diameter in EF treatment were significantly higher than in DF and CK (P<0.05), the total biomass and the nutrient contents in EF treatment were higher than in the other four treatments, but there was no significant difference between AF, LF and DF. As compared to DF, LF and AF, fertilizer efficiency by EF increased by 0.89, 1.42 and 1.73 times, respectively.

Key words: meteorological disaster, extreme disaster, climate resource, climate change, spatio-temporal change, winter planting