摘要
以日本落叶松容器播种苗为对象,对其施不同配方控释肥,进行育苗基质营养元素含量及苗木生长量、生物量、营养元素含量测定分析,采用模糊数学隶属值法选出落叶松育苗的专用配方控释肥。结果表明:配方2控释肥基质碱解氮、有效磷、有效钾及pH值均能够满足日本落叶松生长营养及环境酸碱性要求;隶属值综合评价显示配方2控释肥效果最好,明显优于对照(高价进口美国控释肥爱贝施)。因此,配方2控释肥的施用能够提高苗木质量,使日本落叶松设施育苗工序得以简化,避免不当施肥对环境的污染,可作为落叶松温室育苗专用肥。
One-year-old seedlings of Japanese larch cultivated in net containers were treated with different formulations of controlled-release fertilizers. The aim of this study was to select a high mineral nutrition- efficiency formulation of controlled-release fertilizers under the condition of cultivation environment based on the growth characteristics of seedlings and the dynamics of mineral nutrition in seedlings and in the media. The selection of formulation was performed using fuzzy mathematics method. The results were as follows: The mineral nutrition availability of formulation 2 satisfied the growth requirements of larch seedlings and the pH of the substrate dropped into the most suitable value for this kind of seedlings. The seedlings treated with formulation 2 fertilizer displayed higher growth characteristics and mineral nutrition absorption efficiency according to the values of subject function compared with that of other fertilizers, including CK, which was expensively imported from the US. Therefore, formulation 2 should be popularized instead of CK because it brought about the seedlings' highest growth indexes and nutrition uptake efficiencies. The use of formulation 2 would improve the quality of seedlings, make the process more efficient and reduce environmental pollution from toxic fertilizers.
出处
《北京林业大学学报》
CAS
CSCD
北大核心
2012年第6期47-54,共8页
Journal of Beijing Forestry University
基金
林业公益性行业科研专项经费项目(201104027)
关键词
日本落叶松
容器苗
控释肥
营养元素
吸收效率
Larix kampferi Sarg.
container seedling
controlled-release fertilizer
mineral nutrition
absorption efficiency