RELATIVE ACCUMULATION OF MACRONUTRIENT IONS IN DIFFERENT PARTS OF CUCUMBER (CUCUMIS-SATIVUS)

被引：5

作者：

MORARD, P

BENAVIDES, B

机构：

[1] Laboratoire de Physiologie Végétale Appliquée, Ecole Nationale Supérieure Agronomique, F-31 076 Toulouse Cédex, 145, avenue de Muret

来源：

SCIENTIA HORTICULTURAE | 1990年 / 44卷 / 1-2期

关键词：

cucumber; macronutrients; root absorption; senescence; shoot translocation;

D O I：

10.1016/0304-4238(90)90013-5

中图分类号：

S6 [园艺];

学科分类号：

0902 ;

摘要：

Absorption selectivity towards macroelements in cucumber was characterized using plots where the proportions between the elements, expressed as equivalent fractions, were compared. The selectivity was highly positive towards K+, slightly positive towards SO2- 4 and H2PO- 4, and negative towards Ca2+, whereas there was no selectivity towards Mg2+. NO- 3 absorption was characterized by a selectivity reversal in relation to its proportion in the nutrient solution. This method also allowed the compartmentalization in the plant, the translocations between the various organs and the redistributions during senescence to be studied. © 1990.

引用

页码：17 / 30

页数：14

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