林业科学Issue(5)：153-158,6.DOI:10.11707/j.1001-7488.20150518
南洋楹造林密度与施肥均匀设计试验
Stand Density of Paraserianthes falcataria and the Fertilization Test with a Uniform Design
摘要
Abstract
Objective]This study is to investigate the effect of planting density and fertilization on the early growth of Paraserianthes falcataria. A density-fertilization cultivation mode was established based on revealing the correlation and regression model between main cultivation factors and individual volume,volume per hm2 ,to reasonably coordinate the technical elements of the varieties,the,site,and the fertilization and provide a theoretical basis for fast-growing and high-yield plantation of P. falcataria.[Method]A uniform design combined with randomized complete block design was applied to study on high efficiency cultivation of P. falcataria. With the uniform design U6 (64),both the planting densities and fertilizing levels were analyzed in the trials. The Stepwise analysis was used to select the optimum regression model and determine the main cultivation factors. The Uniform Design Version 3. 00 was used to fit stand yield and fertilizer amount regression model. The Rsreg was used to obtain the optimum amount of fertilizer. [Result]There were highly significant differences in average height,average diameter at breast height,individual volume and volume per hm2 in different trials. Planting density was the most important factor for the growth of P. falcataria,and the optimum planting density was 3 m × 3 m by considering gain both better individual volume and better volume per hm2 . The quadratic regression model between individual volume and fertilizing amount was obtained: Y3 = 6. 54E-2 +5. 29E-8X2 2 +3. 47E-5X3 -4. 27E-5X4 ,the multiple correlation coefficient was 0. 948 0,with significant correlation. The result showed that the optimal choice was Ca(H2PO4)2·H2O 274 g + CO(NH2)2 48 g + compound fertilizer 250 g,and the fertilization through the regression equation could acquire theoretical individual volume and volume per hm2 of 0. 0604 m3 and 47. 290 5 m3 ,respectively,which was 36. 3% and 143. 7% higher than the lowest one in the trail. [Conclusion] The fast-growing character embodied in the early growth of P. falcataria with positive response to different planting density and fertilization,therefore we can better explore the elite and land potential by intensive cultivation method. This study established the best planting density and fertiliz ation combination model of P. falcataria with the uniform experimental design method,and hence could reveal the influence of indicators and regularity,optimize the fitting design precise and high efficiency from the trial times as few as possible.关键词
南洋楹/造林密度/施肥/单株材积/蓄积量/均匀设计Key words
Paraserianthes falcataria/planting density/fertilization/individual volume/volume per hm2/uniform design分类
农业科技引用本文复制引用
晏姝,胡德活,韦如萍,王润辉,郑会全,曾建雄,雷松林..南洋楹造林密度与施肥均匀设计试验[J].林业科学,2015,(5):153-158,6.基金项目
广东省林业科技创新专项资金项目“南洋楹良种选育和高效栽培技术研究与示范”(2009KJCX005－1，2011KJCX012－01) （2009KJCX005－1，2011KJCX012－01）
林业公益性行业科研专项经费项目“南洋楹种子园营建与快繁技术研究”(200704024)。 （200704024）
