摘要
以N、P、K、Mg、Z(Zeolite沸石)为苗期施肥因素,采用L8(41×24)正交设计,P为4个水平,其余2个水平,不施肥作对照,共9个处理,研究不同施肥处理对柚木苗生长和干物质质量的影响。方差分析结果表明:不同施肥处理间7个月生柚木的生长及干物质质量差异极显著,处理5(P1Z2N1K1Mg2)的生长指标和各项干物质质量指标是8个施肥处理中最好的,与其余的施肥处理呈显著或极显著差异。与对照相比,7个月生的柚木苗高、地径、总干物质质量、根干物质质量、茎干物质质量和叶干物质质量分别是对照的3.58、2.74、11.78、11.29、10.24、17.79、8.15倍。沸石促进了柚木苗生长和各项干物质质量的形成,添加沸石的7个月生的柚木苗高、地径、总干物质质量、根干物质质量、茎干物质质量和叶干物质质量分别是不添加沸石的2.10、1.69、4.02、3.17、2.94、2.60倍。不同P水平间的苗木生长和干物质质量的差异也极显著,低P水平对柚木苗生长和干物质质量的影响要优于高P水平,容器苗培育P肥最佳施肥量为基质质量的0.7%。添加Mg也对柚木苗生长和干物质质量的形成起促进作用。
The triM,designed by orthogonal design with a Ls（4^1×2^4） of N, P, K, Mg and Zeolite（Z） for2, 4, 2, 2, 2 levels respectively, was to research the effects of different fertilizer treatments on the growth and dry biomass of seedlings of Tectona grandis. The results of variance analysis of fertilizer trial of Tectona grandis in seedling stage showed that there were high significant difference among different fertilizer treatments on the growths and dry biomass in 7 months, treatment 5 （P1Z2N1K1Mg2） of which was the best treatment among 8 fertilizer treatments on growth and each dry biomass, and had high significant or significant difference with other 7 fertilizer treatments. Compared with the contrast （ no fertilizer treatment）, treatment 5 on seedling height, ground diameter, total dry biomass, root dry biomass, stem dry biomass and leaf dry biomass at 7 months were 3.58, 2.74, 11.78, 11.29, 10.24, 17.79 and 8.15 times that of the contrast respectively. Zeolite can promote the growth of seedling stock of T. grand/s and the formation of biomass of each organ. Treatments with zeolite on seedling height, ground diameter, total dry biomass, root dry biomass, stem dry biomass and leaf dry biomass at 7 months were 2.10, 1.69, 4.02, 3.17, 2.94 and 2.60 times that of treatments without zeolite. There are also high sig- nificant differences on growths and dry biomass of seedlings among different P levels, the low P levels of which were superior to the high P levels on growths and dry biomasses of seedlings. The best application of P fertilizer in containerized seedling stock culture was 0.7% of weight of medium. Treatment added Mg could also promote the growth of seedling stocksand increase the biomass of seedling stocks. This trial will provided scientific references for field fertilizer application in the future.
出处
《林业科学研究》
CSCD
北大核心
2005年第5期535-540,共6页
Forest Research
基金
国家"十五"攻关科技计划(2002BA515B0203)
(2004BA515B0203)子课题
关键词
柚木
苗期
施肥
生长
干物质质量
Tectona grandis
seedling stage
fertilization
growth
dry biomass
