摘要
为研究沸石与N、P、K和Ca配比对柚木幼林早期生长的影响,采用裂区设计,沸石为主区,以N、P、K和石灰为4个因素,各个因素3水平,正交设计L_9(3~4)的通过9个施肥处理为副区,进行施肥试验。结果表明:造林后18个月,沸石处理间柚木树高生长差异显著,施用沸石显著提高柚木高生长;施肥处理间树高和胸径生长差异极显著,最佳施肥为处理4(N2P1K2Ca3),即每公顷施N 200 kg、P 300 kg和K 200 kg以及每株施石灰1 kg,其柚木树高和胸径分别是最差处理的1.66和2.07倍;4个因素不同水平间主要以P三水平(100、200、300 kg/hm^2)间差异极显著,高P水平(300 kg/hm^2)柚木树高和胸径生长分别是低P水平(100 kg/hm^2)的1.51和1.61倍。P施肥对柚木早期生长影响效果极显著,而K肥对霜冻后的柚木生长恢复影响显著。
In order to study effects of applying zeolite, N, P, K and Ca on the early growth of teak （Tectona grandis L. f.） young plantation, the fertilizer trial, used by split plot design with two levels of zeolite as whole-plots and nine fertilizer proportions designed by orthogonal design with a L9（34） of N, P, K, Ca as sub-plots, was conducted. The trial results at 18 month-old after planting showed that there were significant differences on the growth of tree height between zeolites. Zeolite applied could obviously increase the growth of teak. There were high significant differences on the growths of height and DBH among nine fertilizer proportions, of which best fertilizer proportion （N2PIKzCa3） with applying 200 kg, 300 kg and 200 kg/hm2 of N, P and K respectively and 1 kg/tree of lime, was 1.66 times and 2.07 times on the growths of height and DBH at 18 month-old respectively than that of the worse fertilizer proportion. Differences among 3 levels for each factor of N, P, K and Ca mainly reflected in 3 levels （100, 200, 300 kg/hm2） of P, which had high significant differences on the growths of height and DBH of teak. The growth of height and DBH at 18 month-old of teak for high level P with 300 kg/hm2 applied was respectively 1.51 times and 1.61 times than that of low level P with 100kg/hm2 applied. P fertilized had high significant effect on the early growth of for teak young plantation and K fertilizer applied had significant effect on the recovery of teak growth after the frost.
出处
《中南林业科技大学学报》
CAS
CSCD
北大核心
2017年第4期14-20,共7页
Journal of Central South University of Forestry & Technology
基金
“十二五”国家科技支撑项目“柚木和西南桦珍贵用材林定向培育技术研究与示范”(2012BAD21B01)
关键词
柚木幼林
早期生长
沸石
肥料配比
teak young plantation
early growth
zeolite
fertilizer proportion
