雷林1号桉叶片营养诊断研究  

A Study on Foliar Nutrient Diagnosis in Eucalyptus leizhouensis No. 1

作　　者：李淑仪[1] 林书蓉[1] 廖观荣 蓝佩玲 

机构地区：[1]广东省科学院土壤研究所,副研究员广州510650

出　　处：《林业科学研究》1997年第1期13-18,共6页Forest Research

基　　金：广东省科学院青年科学基金资助项目(1990~1994年)的部分内容

摘　　要：对雷林1号桉叶片营养诊断的采样时间、诊断方法,用临界值法和诊断施肥综合法(DRIS)诊断雷林1号桉施肥“中试”区的营养状况。结果表明:雷林1号桉叶片营养诊断的最佳采样时间是8月龄,其N、P、K临界浓度(g/kg)为 17.2、1.3、4.9,DRIS参数为 K/P、P/N和N/K。The sampling time of leaf of Eucalyptus leizhouensis No. 1 for nutrient diag- nosis and the method of nutrient diagnosis were discussed. The nutrition status of the fertil- ized eucalyptus in medium-expanded experiment plots were diagnosed by using diagnosis of critical value and diagnosis recommendation of integrated system(DRIS). The results showed that the optimal leaf sampling time in nutrient diagnosis was at 8-month-old for E. leizhouen- sis No. 1 ,the diagnosis critical value (g/kg of N、P and K was respectively 17. 2,1. 3 and 4. 9 and the diagnosis parameter of DRIS was K/P,P/N and N/K.

关 键 词：桉树 雷林1号桉 诊断 采样时间 叶片 

分 类 号：S792.390.6[农业科学—林木遗传育种]