摘要
以1 a生爪哇木棉营养袋播种苗为研究对象,采用L25(53)正交试验设计,研究不同施肥配比对爪哇木棉苗期生长的影响.结果表明:爪哇木棉苗木高生长最优肥料配比组合为N3P5K2,地径生长最优组合为N2P4K5,主根长最高为N2P4K5,而I级侧根数最高为N3P5K2;通过4个生长指标主成分分析及标准化计算,确定最优施肥组合为N2P5K1,即尿素肥10.87 g/m2+过磷酸钙肥388.89 g/m2+硫酸钾肥0 g/m2.苗期施肥有利于幼苗的生长,能够有效促进侧根伸长和数量的增加,从促进苗木质量及经济价值考虑,爪哇木棉苗期施肥效益显著.
One year old nutrition bag seedlings of Ceiba pentandra were used to study the effect on seedling growth of different fertilizer ratios with L25（53） orthogonal experimental design.The best high-growth portfolio of Ceiba pentandra seedlings is N3P5K2,the highest main root length is N2P4K5,and the highest number of I-level lateral roots is N3P5K2.By the principal component analysis and standardized computing of four growth index,to determine the optimum fertilizer combination is N2P5K1,namely,Urea 10.87g/m^2,SSP 388.89g/m^2,Potassium 0g/m^2.Seedling fertilization is good for the growth,and can effectively promote elongation and number of lateral roots,considered seedling quality and economic value;the efficiency of Ceiba pentandra seedling fertilizer is significant.
出处
《林业调查规划》
2012年第1期119-123,共5页
Forest Inventory and Planning
基金
林业公益性行业专项(201104034)资助
国家级科技成果推广项目([2011]35号)资助
关键词
爪哇木棉
施肥配比
生长指标
最优组合
Ceiba pentandra
fertilizer ratios
growth index
optimum combination
