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某些营养元素对柑桔冻害有不同程度的影响.Lawless 报道柑桔缺镁和铜能显著提高植株对寒冷的敏感性。后期施氮肥会引起过度生长和延迟进入休眠而降低抗寒能力。Spencer 发现受冻前施用大量磷肥的桔树比不施磷肥植株受冻更重。Smith 等在几种肥料中对大约4000株树作了观察.结论是桔树营养状况还未达到缺素水平时,营养状态对桔树
Some nutrients have different degrees of citrus frost damage.Lawless citrus deficiency of magnesium and copper can significantly improve the plant’s sensitivity to cold. Post-application of nitrogen can cause over-growth and delay into dormancy and reduce cold tolerance. Spencer found that citrus trees that used large amounts of phosphate before freezing had more severe cold than those that did not. Smith et al observed about 4,000 trees in several fertilizers and concluded that when the nutritional status of orange trees had not yet reached the level of deficiency,