模拟不同施肥处理对芳樟树高和地径的影响  

Effects of simulated different fertilization treatments on tree height and base diameter of Cinnamomum camphora var.1 inaloolifera Fujita.

作　　者：冯瑜[1] 张国防[1] 李左荣[1] 

机构地区：[1]福建农林大学林学院,福建福州350002

出　　处：《中南林业科技大学学报》2015年第6期34-39,共6页Journal of Central South University of Forestry & Technology

基　　金：福建省林业厅种苗科技攻关项目(k85130001);科技部农业成果转化项目(1C4005002);福建省五新项目(FKY018001)

摘　　要：为探讨不同施肥处理对芳樟Cinnamomum camphora var.1inaloolifera Fujita.树高和地径的影响。运用三元二次通用旋转组合设计,对不同的施肥处理对芳樟的树高和地径的影响开展研究;结合各个指标值建立数学模型,对其拟合方程进行最优求解,确定芳樟最优生长的施肥配比。显著性分析结果显示:N和K施用量对树高和地径有显著影响,P施用量对树高和地径极显著。建立N、P和K施用量与芳樟树高和地径数学模型的回归方程,据此计算出最优树高可达到43.16 cm,与之对应的N,P和K的施肥量分别为3.64,5.00,3.07g。最优地径可达到6.34 mm,与之对应的N,P和K的施肥量分别为:3.01,3.01,2.7g。研究结果显示:不同的芳樟树高和地径最佳N、P和K施肥配比不完全相同,树高生长对N、P、K需求量均较大,对P的需求尤为明显,地径生长对N、P、K需求均较大。因此在实际的芳樟林培育生产中,可以根据不同的生产需求或阶段选择需要的最优施肥方案,而达到施肥功效最大化的目的。The ternary quadratic general rotary unitized design was applied to study the effects simulated different fertilization treatments of on tree height and base diameter of Cinnamomum camphora var. linaloolifera Fujita. The mathematic model was built based on the integration of all index values. The best solution was calculated for simulated equation systems in order to determine the best fertilization proportion. The significance analysis indicated the fertilization amount of N and K had significant effects on tree height and base diameter while the effect from fertilization amount of P was more remarkable. The regression equations of the mathematic models of N, P and K fertilization proportion versus the height and ground diameter of C. camphora var. linaloolifera Fujita were established. According to the regression equations, the predicted optimal tree height will be up to 43.16 cm with the fertilization amount of N, P and K of 3.64 g, 5.00 g and 3.07 g respectively, the predicted optimal base diameter will be 6.34 mm with the fertilization amount of N, P and K of 3.01 g, 3.01g and 2.70 g respectively. The results indicate that the fertilization proportions of N, P and K are not identical for optimization of tree height and ground diameter. Tree height growth will have larger demand of N, P, K, demand for P will be particularly evident, diameter growth also will have larger demand of N, P, K. Therefore, in the actual production of C camphora var. linaloolifera Fujita forests, the optimal fertilization program should be selected according to different production needs or stage selection requirements, thus obtaining the purpose of maximizing the effectiveness of fertilization.

关 键 词：芳樟 施肥处理 树高 地径 三元二次回归正交旋转组合设计 

分 类 号：S792.23[农业科学—林木遗传育种]