摘要
采用旋转设计,建立了壤土类型上泡桐高干壮苗函数模型;剖析了各项栽培措施对苗高和地径的贡献及互作效应;优化出1×1.2m 株行距、3月底前后埋根,种根粗度1.5～2.5cm、追施尿素50～55kg/亩和基施钙镁磷肥75～85kg/亩的高干壮苗(H>4.5m,D>6.0cm)培育措施组合,为泡桐高干壮苗培育提供了较多定量信息。
The authors set up the mathematical models of height and diameter of Paulo-wnia nurserystock on loam soil by applying rotational regression design,and si-ft the optimum combination(for H over 4.5 m and D over 6cm)in all dimens-ional factors——spacing 1×1.2m;planting dete,around the end of March;dia-meter of root cutting,1.5-2.5cm;carbamide,50-55 kg/mu;calcium magnesi-um phosphate,75-85 kg/mu.The study provides abundant information forhigh-stiong nurserystock cultivation.
出处
《河南农业大学学报》
CAS
CSCD
1990年第1期1-10,共10页
Journal of Henan Agricultural University
关键词
泡桐
高干壮苗
培育
数学模型
Paulownia
high-strong nurserystock
rotational regression design
mathematical models
cultural factors
