NUTRITION OF GREVILLEA ROBUSTA
NUTRITION OF GREVILLEA ROBUSTA
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DOI：
10.1071/bt9660151
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发表时间：
1966-01-01
影响因子：
1.1
通讯作者：
KERAITIS, K
中科院分区：
文献类型：
--
作者：
MOORE, CWE;KERAITIS, K
实生苗G.将robusta生长在温室中，其中日/夜温度方案控制在约25/20[degree]C。研究了养分缺乏和钾氮互作的影响。缺素症状时，观察到每个主要元素，和微量元素锰和硼，从营养液中省略，并在一般省略有显着影响的高度，茎基直径，茎重，叶重，根重，数量和重量的分支。缺锌、铜和钼对这些特征没有影响，也没有观察到缺乏症状。除茎基粗外，所有性状均表现出显著的增氮增钾效应，钾氮互作效应显著。钾和氮缺乏症状的发展不仅取决于特定营养素的绝对水平，而且还取决于两种营养素的平衡。这在缺钾的情况下尤其明显。
Seedlings of G. robusta were grown in perlite in glasshouse in which the day/night temperature regime was controlled at approximately 25/20[degree]C. The effects of nutrient deficiencies and of potassium X nitrogen interactions were examined. Deficiency symptoms were observed when each major element, and the minor elements manganese and boron, were omitted from the nutrient solution, and in general omissions had significant effects on height, basal stem diameter, stem weight, leaf weight, root weight, and number and weight of branches. Omissions of zinc, copper, and molybdenum had no effect on these characteristics, and no deficiency symptoms were observed. Significant effects of increasing nitrogen and increasing potassium were obtained for all characters measured, and except for basal stem diameter there were significant potassium X nitrogen interactions. The development of deficiency symptoms for potassium and nitrogen is dependent not only on the absolute level of the particular nutrient but also on the balance of both nutrients. This was particularly evident in the case of potassium deficiency.