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一、引言土壤矿质元素缺乏或不足引起的植株营养缺乏,会影响植株生命过程,导致叶片褪色、生长迟缓以及叶和茎变形。每种养分缺乏都会产生一种特有的病症。然而,不同植物对矿质养分的需要量有所不同,不同作物的缺乏病症不一定总是相同。在症状显现前,也许已造成了相当大的产量损失。但尽管如此,为了施适量的矿质养分以防止进一步损失,识别症状可能仍有很大的实用价值。本文是关于腰果幼苗的若干大量和微量元素缺乏症状的报告。
I. INTRODUCTION Lack of nutrition in plants due to lack or deficiency of mineral elements in soil can affect the life process of plants, resulting in discoloration of leaves, retardation of growth, and deformation of leaves and stems. Each lack of nutrients will produce a unique condition. However, the requirements of different plants for mineral nutrients vary and the lack of disease for different crops does not always have to be the same. It may have caused considerable yield loss before the symptoms appear. Nonetheless, in order to apply the appropriate amount of mineral nutrients to prevent further losses, the identification of symptoms may still have great practical value. This article is a report on a number of large and trace element deficient symptoms of cashew seedlings.