南京林业大学学报(自然科学版) ›› 1990, Vol. 33 ›› Issue (02): 16-21.doi: 10.3969/j.jssn.1000-2006.1990.02.003

• 研究论文 • 上一篇    下一篇

湿地松容器苗的营养效应及其诊断初探

吴国南;黄宝龙   

  1. 南京林业大学林学系;南京林业大学林学系
  • 出版日期:1990-06-18 发布日期:1990-04-18

THE EFFECTS OF NUTRITIONS ON THE CONTAINER SLASH PINE SEEDLINGS AND DIAGNOSIS

Wu Guonan Huang Baolong   

  1. Department of Forestry
  • Online:1990-06-18 Published:1990-04-18

摘要: <正>本文用正交设计研究氮、磷、钾对一年生湿地松容器苗的生长和生理效应,并作营养诊断。结果表明。(1)氮、磷、钾的不同用量和配比显著影响苗木的生长和生理指标。(2)二次函数分析求得的适宜施肥量为:氮0.161~0.189g/株;磷0.215~0.348g/株。(3)氮、磷、钾的不同用量和配比明显影响苗木务器官体内的养分元素浓度,其适宜浓度为氮1.26~1.83%;磷0.18~0.28%;钾0.89~1.43%。(4)利用生长生理诊断和DRIS法对苗木作营养诊断可以判断苗木的需肥要求,证明有较高的确诊率。

Abstract: An orthogonal design was adopted in this trail to study the effects of nitrogen, phosphorus, potassium on the movphological and physiological characters of 1-year-old container slash pine (Pinue elliottii) seedlings, and the nutritional diagnosis was made in two ways. The results show that. (1) The different propertions of nitrogen, phosphorus and potassium have great influen-ces on both of the characters, and there are obvious variations between the treatments. (2) The reasonal fertilization amounts for individual seedling analysed in quadraic function are as follows: nitrogen 0.161-0.189; phosphorus 0.315?.358; potassium 0.120-0.240. (3) The different proportions of nutritional elements in leaf, shoot and root. Its reasonal concentrations in leaf are nitrogen 1.26-1.83%; Phosphorus 0.18-0.28%; potassium 0.894.43%. (4) The nutritional state could be evaluated by both morphological, physiological characters diagnosis and DRIS, and the feitilization requirement of seedling could be determined accurately.