不同营养条件对黎蒴栲苗木形态指标的影响-广东林业科技.doc

不同营养条件对黎蒴栲幼苗形态指标的影响* 孙丽静1，2 陈海军3 余 娜2 王 正2 陈红跃2 （1.广东科贸职业学院 广东广州 510430；2.华南农业大学；3.广东省西江林业局） 摘要 采用均匀设计对黎蒴栲实生幼苗进行不同梯度的N、P、K配比施肥试验，探讨不同营养条件对黎蒴栲幼苗苗高、地径、冠幅的影响。结果表明：1）不同营养条件对黎蒴栲幼苗的形态指标有很明显的影响。T5（N: 0.0750 g/株、P2O5:0.3500 g/株）施肥处理的苗高、地径、冠幅较大，其次为T4（N 0.1125 g/株、K2O 0.0500 g/株）、T3（P2O5 0.1750 g/株、K2O 0.1000 g/株）施肥处理，T1（N 0.0.1500 g/株、P2O5 0.2625 g/株、K2O 0.1500 g/株）、T2（N: 0.0375 g/株、P2O5 0.0875 g/株、K2O 0.2000 g/株）施肥处理和对照则较差。2）N、P、K对黎蒴栲幼苗生长的影响效应各不相同。氮肥可促进黎蒴栲幼苗的生长，但过多的钾肥则不利于黎蒴栲幼苗的生长。 关键词 黎蒴栲 营养条件 形态指标 Effects of nutrition conditions on morphologic Characteristics of Castanopsis fissa Seedlings Sun Lijing1，2 Chen Haijun3 Yu Na1 Wang Zheng1 Chen Hongyue2 (1.Guangdong Vocational College of Science and Trade，Guangzhou，510430；2. South China Agricultural University；3. Xijiang Forestry Bureau of Guangdong Province) Abstuact The uniform design was applied to the test of 5 different gradients of nitrogen, phosphorus and potassium（the treatments were T1、T2、T3、T4 and T5） in the fertilization of Castanopsis fissa seedlings. The height, diameter, crown width influenced by different nutrition conditions in the fertilization of Castanopsis fissa seedlings were studied. The results were summarized as follows: (1) Nutrition conditions had enormous influence on morphologic characteristics(the height, diameter and crown width) of Castanopsis fissa seedlings. The effects of T5（N 0.0750 g/ plant、P2O5 0.3500 g/ plant）was better than that of T4（N 0.1125 g/ plant、K2O 0.0500 g/ plant）and T3（P2O5: 0.1750 g/ plant、K2O: 0.1000 g/ plant）, but the effects of T1（N 0.0.1500 g/ plant、P2O5: 0.2625 g/ plant、K2O 0.1500 g/ plant）, T2（N 0.0375 g/ plant、P2O5 0.0875 g/ plant、K2O: 0.2000 g/ plant） and CK were worse. (2) The growth effects *基金项目：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）。 第一作者简介：孙丽静（1981-）sunnylijing2004@163.com。 通信作者简介：陈红跃（1964-）chenyue@。 on Castanopsis fissa seedlings of nitrogen, phosphorus and potassium were different. Nit