长期施用不同肥料对红哺鸡竹林叶片碳、氮、磷化学计量特征的影响  

Stoichiometry of C,N and P in Phyllostachys iridescens leaves under long-term application of different fertilizers

作　　者：郭子武[1] 虞敏之 郑连喜 杨清平[1] 李迎春[1] 陈双林[1] 

机构地区：[1]中国林业科学研究院亚热带林业研究所,浙江富阳311400 [2]游县林业局,浙江龙游324400

出　　处：《生态学杂志》2011年第12期2667-2671,共5页Chinese Journal of Ecology

基　　金：杭州市科研院所专项(20090332N01);国家林业公益性行业科研专项(201004008);浙江省林业科技推广项目(2011B01)资助

摘　　要：为了给笋用竹林土壤合理补充养分提供科学依据,以红哺鸡竹(Phyllostachys iridescens)为对象,开展了长期施用不同肥料(生物有机肥、复合肥、菜籽饼肥和不施肥(对照))竹林2年生立竹叶片C、N、P化学计量学特征的研究。结果表明:叶片C、N、P含量分别为514.26～582.77、18.25～30.20、1.20～1.75mg·g-1,施肥竹林均极显著或显著高于对照竹林,以施菜籽饼肥竹林叶片C含量最高,施生物有机肥竹林叶片N、P含量最高;叶片C:N、C:P分别为18.71～35.02、304.41～458.52,总体上施肥竹林较对照竹林极显著降低,施肥竹林N、P养分利用效率显著降低;叶片N:P为15.28～17.12,相对稳定,施肥竹林与对照竹林无显著差异;叶片N、P含量呈极显著正相关,N含量与N:P相关性不显著,而P含量与N:P呈极显著负相关。A field experiment was conducted to study the leaf C,N and P stoichiometry of 2-year-old Phyllostachys iridescens individuals under long-term application of bio-organic fertilizer,compound fertilizer and rapeseed cake fertilizer,aimed to provide scientific basis for the rational supplement of soil nutrients in bamboo-shoot-use P.iridescens stand.In all treatments,the leaf C,N and P concentrations were 514.26-582.77 mg·g-1,18.25-30.20 mg·g-1,and 1.20-1.75 mg·g-1,respectively.Fertilization increased the leaf C,N,and P concentrations significantly.The leaf C concentration was the highest under the application of rapeseed cake fertilizer,and the leaf N and P concentrations were the highest under the application of bio-organic fertilizer.The leaf C：N and C：P ratios in all treatments were 18.71-35.02 and 304.41-458.52,respectively,and fertilization decreased these ratios significantly,being most obvious under the application of bio-organic fertilizer.The leaf N：P ratio ranged from 15.28 to 17.12,and no significant difference was observed among all treatments.There was a significant positive correlation between leaf N and P,no correlation between leaf N and N：P,and a significant negative correlation between leaf P and N：P.

关 键 词：红哺鸡竹 施肥 化学计量学 养分利用效率 

分 类 号：S795[农业科学—林木遗传育种]