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首页> 外文期刊>Journal of Plant Nutrition >Nutrient distribution and stem length in flowering stems of protea plants.
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Nutrient distribution and stem length in flowering stems of protea plants.

机译:普tea茶花茎中的养分分布和茎长。

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摘要

A study of nutrient distribution in the flowering stem of proteas was carried out in commercial protea plantations of each of the cultivars 'Scarlett Ribbon', 'High Gold', 'Veldfire', and 'Sunrise' of Leucospermum cordifolium, and of the species L. patersonii located in a subtropical zone (La Palma Island, Canarian Archipelago). Flowering stems were cut into different parts: flower bud, leaves from half proximal stem to the flower bud, leaves from half distal stem to the flower bud, half proximal stem to the flower bud, and half distal stem to the flower bud. Nutrient content of the different parts of the flowering stems of the cultivar and the species gave significant differences in some cases, depending on the nutrient and the cultivar. Occasional dissimilarities among the levels of nitrogen (N), phosphorus (P), potassium (K), magnesium (Mg), sodium (Na), copper (Cu), iron (Fe), manganese (Mn), and zinc (Zn) were determined in comparisons among half proximal stems and half distal stems, independent of the cultivar. The same trend was observed when nutrient contents of the leaves from the half distal and the half proximal stems were compared. Phosphorus exhibited the lowest concentrations of all macronutrients in the different organs. Flower buds presented the smallest levels of macro-and micronutrients, while the leaves of the half distal and half proximal stems showed the highest values. The influence of nutrients of leaves from the half proximal stems on the stems length varied among cultivars.
机译:在商业化的普tea茶种植园中研究了普tea茶的栽培品种“斯卡利特丝带”,“高金”,“野火”和“日出”,以及种L patersonii位于亚热带地区(加那利群岛拉帕尔玛岛)。将花梗切成不同的部分:花蕾,从近端一半到花蕾的叶子,从远端茎到一半花蕾的叶子,近端茎到花蕾的一半,远端花蕾的一半。在某些情况下,根据养分和品种的不同,品种和品种花茎不同部位的营养含量也存在显着差异。氮(N),磷(P),钾(K),镁(Mg),钠(Na),铜(Cu),铁(Fe),锰(Mn)和锌(Zn)的水平之间偶尔存在差异通过比较半个近侧茎和半个远侧茎来确定),而与品种无关。当比较来自远端的一半和近端的一半的叶片的营养成分时,观察到了相同的趋势。磷在不同器官中的所有常量营养素含量最低。花芽中的微量元素和微量营养素含量最低,而远端的一半和近端的一半则显示出最高的值。不同品种近端茎的叶片养分对茎长的影响各不相同。

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