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Position: Home > Articles > STUDIES ON THE TIME OF APPLYING NITROGEN FERTILIZER TO APPLE TREES Acta Horticulturae Sinica 1981 (1) 27-32

苹果树氮肥施用时期的研究

作者：

李士榜

单位：

辽宁省果树科学研究所

摘要：

本文阐明了苹果树施用氮肥的适宜时期,认为苹果树施用氮肥的最大肥效时期是在花芽分化前(6月中旬)。此时施用氮肥增产效果最大,对提高果实产量和树体营养水平都起到良好的作用。

译名：

STUDIES ON THE TIME OF APPLYING NITROGEN FERTILIZER TO APPLE TREES

作者：

Li Shibang ( Pomology Institute of Liaoning Province )

摘要：

Studies were carried out on the influence of the time of applying nitrogen fertilizers on the yield aud quality of fruits of the apple cultivar ' Rails ' in order to find out the best time for applying nitrogen fertilizer. The experimental results showed that: 1) Application of nitrogen fertilizer once a year before flower bud initiation gave yield increa-ses up to 34.7% over the control; application twice a year after flower drop and during fruit swel-ling gave yield increase to 32.7%; application once before the opening of the flowers gave yield inc-reases up to 14.6%. Under the conditions of these experiments, application of nitrogen fertilizer before flower bud initiation appears to be the most favorable time,so far as increasing yield is con-cerned. 2) The influence of the time of nitrogen supply on the sugars and titrable aeids of fruits was not significant. However, application of nitrogen fertilizers after mid-June increased markedly the nitrogen level of the tree.

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苹果树氮肥施用时期的研究

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