Nutritional status of commercial apple orchards in the Åland Islands

IF 1.7 4区 农林科学 Q2 AGRONOMY Acta Agriculturae Scandinavica Section B-Soil and Plant Science Pub Date : 1998-06-01 DOI:10.1080/09064719809362486
R. Dris, R. Niskanen
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引用次数: 8

Abstract

Soil, leaf and fruit samples were collected from nine apple orchards in the Aland Islands during 1993–95. Early, intermediate and late apple cultivars were studied. Leaves were sampled three times during fruit development. In the experimental orchards, mean soil pH was 7.0 and the concentrations of extractable nutrients (mg l−1 soil) were: P 30; K 216; Ca 6000; Mg 180. The mean values of nutrients in the leaves (% DM) were: N 2.2; P 0.22; K 1.7; Ca 1.7; Mg 0.22, and in the fruit (mg 100 g−1 FW): N 47; P 10; K 125; Ca 5; Mg 5. During the sampling period (22 July‐26 August), N, P and K in the leaves decreased and Ca increased. Nutrient levels in the leaves were satisfactory, but N, P and K concentrations in the fruit were low. There were significant linear correlations between the corresponding fruit and leaf nutrients, positive for N, P, K and Mg and negative for Ca. Leaf Mg and fruit K correlated significantly with the corresponding soil nutrients. P and Ca in leaves and fruits correlated with soil pH mor...
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Åland群岛商业苹果园的营养状况
在1993 - 1995年期间,从奥兰群岛的九个苹果园收集了土壤、叶子和果实样本。对早、中、晚苹果品种进行了研究。在果实发育过程中对叶片取样三次。试验果园土壤pH平均值为7.0,可提取养分(mg l−1土壤)浓度为:p30;K 216;Ca 6000;180毫克。叶片中养分的平均值(% DM)为:N 2.2;P 0.22;K 1.7;Ca 1.7;Mg 0.22,果实中(Mg 100 g−1 FW): n47;P 10;K 125;Ca 5;5毫克。在取样期内(7月22日~ 8月26日),叶片中N、P、K含量降低,Ca含量增加。叶片的营养水平较好,但果实的氮、磷、钾含量较低。相应的果实养分与叶片养分呈显著的线性相关,N、P、K、Mg为正,Ca为负。叶片Mg和果实K与相应的土壤养分呈显著相关。叶片和果实中磷、钙含量与土壤pH值的相关性更大。
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来源期刊
CiteScore
4.40
自引率
0.00%
发文量
56
审稿时长
2.3 months
期刊介绍: Acta Agriculturæ Scandinavica Section B publishes original research in applied soil and plant science with special attention given to to crop production in agri- and horticultural systems. We welcome manuscripts dealing with: Climate smart and sustainable crop production systems Water and nutrient efficiency Soil conservation and productivity Precise agriculture systems Applications of bio- and nanotechnology Digitalisation and robotics Soil-plant interactions Acta Agriculturæ Scandinavica, Section B – Soil & Plant Science forms part of a series of titles published on behalf of the Nordic Association of Agricultural Science (NJF). The series also includes Section A - Animal Science .
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