森林与环境学报2016，Vol.36Issue(4)：429-433,5.DOI:10.13324/j.cnki.jfcf.2016.04.008
杉木种子园土壤养分限制因子的研究
Nutrient limit factors of soil in the Cunninghamia lanceolata seed orchard
摘要
Abstract
To investigate the soil nutrient status and adsorption characteristics of Cunninghamia lanceolata seed orchard, the characters of soil nutrient adsorption were observed and the nutrient limit factors were discovered by potting experiment and by the system diagnosis method of soil nutrient status. The results showed that the content of P was 6.8 mg•L-1 that was a little more than the critical value of P in a third generation C. lanceolata seed orchard. The contents of Ca and Mg were 99. 9 and 14. 9 mg•L-1 , respectively, that was far below the critical value of Ca and Mg in the United States International Agricultural Service Center. The content of B, Cu, Mn, Zn and S were 0. 78, 2. 6, 11. 1, 2. 5 and 67. 7 mg•L-1 , which was rich. The soil adsorption rate of phosphorus was 53.9% which was the highest. According to the result of potted experiment, the order of nutrient deficiency in the Chinese fir seed orchard soil was P>Ca>N>Mg and the trace elements were in surplus. Therefore P, Ca fertilizer should be increased when applying N fertilizer and the use efficiency of N, P fertilizer will be improved so as to realize soil nutrient balance during the third generation Chinese fir seed orchard management.关键词
种子园/系统研究法/土壤养分Key words
seed orchard/systematic approach/soil nutrient分类
农业科技引用本文复制引用
李燕燕,许鲁平,郑双全,孟庆银,张子文,樊后保..杉木种子园土壤养分限制因子的研究[J].森林与环境学报,2016,36(4):429-433,5.基金项目
江西省高校科技落地计划( KJLD12097)；江西省高校“十二五”水土保持与荒漠化防治重点学科培育基金；三明市科技项目(2012－N－20)。 （ KJLD12097）
