摘要
嫩枝扦插是快速培育林木苗木的重要技术手段之一,而建立肥料效应模型是目前国内外实现施肥定量化的主要途径,采用正交回归试验设计对四翅滨藜嫩枝扦插苗根系干物质与N、P、K不同施肥水平的效应进行研究,结果表明在该土壤条件下,四翅滨藜嫩枝扦插苗在N 227.0~257.6kg/hm2,P180.78~216.56kg/hm2,K 61.61~176.80kg/hm2时,地下部分干生物量达到140g以上,可大大提高埋根造林的质量。
The softwood cuttings is one of the important methods for fast propogation of forest nursery stock.Establishment of a model on the effect of fertilizers is the important way to quantifying fertilizer application home and abroad.An orthogonal regression design with three factors（N,P and K）and five levels were adopted to find the effects of N,P and K fertilizers on the rooting dry matter from the softwood cuttings of Atyipiex canexcens.The results showed that P fertilizer was the most important factor of the three factors on the dry matter of the softwood cuttings;the best combination of N,P and K fertilizers on the dry matter of the softwood cuttings of Atyipiex canexcens was N 227.0-257.6kg/hm2,P 180.78-216.56kg/hm2,K 61.61-176.80kg/hm2,the underground dry biomass achieved140 g above,which may enhance greatly the quality of the afforestation.
出处
《陕西林业科技》
2014年第6期6-9,13,共5页
Shaanxi Forest Science and Technology
基金
国家林业局项目"黄土高原半干旱地区优良树种快速繁育技术示范推广"(2011-36)
关键词
四翅滨藜
N、P、K
正交回归
Atyipiex canexcens
N,P and K fertilizers
orthogonal regression design
