不同营养条件对黎蒴栲幼苗根系生长的影响  

Effects of Root Growth of Castanopsis fissa Seedlings under Different Nutrition Conditions

作　　者：孙丽静[1,2] 官莉莉 王正[2] 余娜[2] 陈红跃[2] 

机构地区：[1]广东科贸职业学院,广东广州510430 [2]华南农业大学,广东广州510642 [3]广东省西江林业局良洞迳林场,广东云浮527400

出　　处：《广东园林》2010年第3期64-67,共4页Guangdong Landscape Architecture

基　　金：广州市林业局科技攻关项目"短轮伐期黎朔栲工业原料林培育技术研究"(4400-H05098);广东省科技攻关项目(2003C201019)

摘　　要：对黎蒴栲实生幼苗,研究了不同梯度的N、P、K配比施肥对根系生长的影响。结果表明:(1)N、P、K配比影响根系的生长,在5个处理中,以每株施N0.1125g和K2O0.0500g处理最有利于I级侧根(>5cm)数量和根系活力的增加。(2)在不同的生长时期(9、10、11、12月),根系的活力也不同,各处理根系活力最大值都出现在11月。The root growth ofCastanopsis fissa seedlings influenced by different gradients of N, P and K fertilization was studied. The results showed that the combination of N, P and K fertilization had great influence on root growth. The treatments of N and K2O applied 0.1125 g and 0.0500 g per strain could greatly increase the number of grad I lateral roots （〉5 cm） as well as the roots activities. Roots activities were different in various growth periods from September to December. The maximum root activity appeared in November in all treatments.

关 键 词：黎蒴栲幼苗 营养条件 根系生长 

分 类 号：S792.99[农业科学—林木遗传育种]