前言每年都因为安久梨的一些生理失调。如苜蓿青、黑底(Black end)和木栓斑病等,使梨的生产上遭受一定的损失。应用某些栽培措施减少失调的发生,可有效的提高产量增加收入。本文讨论了失调与缺钙的关系,有木栓斑病的,有黑底的和有菖蓿青的梨果实中的钙均较正常果为低,后一种失调是在果实顶端或萼洼处有绿色条纹或斑点,並在萼洼处有许多凹陷的小木栓斑点。 Preface Every year because of Angola pear some physiological disorders. Such as alfalfa green, black end (Black end) and wood bolt blotch disease, so that the production of pear suffered some losses. Apply some cultivation measures to reduce the occurrence of disorders, which can effectively increase production and increase income. This article discusses the relationship between disorders and calcium deficiency. The calcium in diseased leaves of halibut, black and gladiolus is lower than that of normal fruit, the latter being at the top of the fruit or in the calyx depression There are green stripes or spots, and in the calyx depression has many hollow spots of small wooden bolt.