摘要
2005~2006年连续2 a对日本栗(Castanea crenata)叶片中N、P、K、Ca、Mg矿质营养元索含量及其年周期变化进行了研究。结果表明:日本栗叶片中N、P、K、Ca、Mg元素的含量在年周期内呈规律性变化,且各元素间存在一定相关性;不同树龄日本栗叶片N、P、K、Mg元素含量差异极显著;利用叶分析指导施肥时,采取叶样的时期应在生长季前期,即叶片速生期;生长季前期叶片内N、P、K含量与当年结苞数存在极显著正相关,但并不是决定当年结苞数的唯一影响因素。
The contents of mineral nutrients(N,P,K,Ca and Mg) and annual dynamic changes in the leaves of Castanea crenata Sieb.et Zucc.were studied in 2005 and 2006.The results showed that some regulaties exhibited in the contents of the nutrients,and there existed correlation among the nutrients,and significant differences were found among the trees with different ages.While instructing the fertilizer application with the method of leaf analysis,the period of picking leaves was the earlier period of growth season-le...
出处
《西北林学院学报》
CSCD
北大核心
2008年第4期14-17,共4页
Journal of Northwest Forestry University
基金
国家农业科技成果转化资金项目:加工用日本栗品种中试与示范(04EFN212100051)
关键词
日本栗
叶片
矿质营养元素
年动态变化
Castanea crenata
leaf
mineral nutrition
annual dynamic change
