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在美国阿拉巴马州李子生产中的缺硼已不是一个新问题。缺硼症状,首先于1963年在阿拉巴马州中部的 Ozark Premier 李子上被发现。现今对李树施硼肥,已成为该州李子丰收的必要措施。李子果实上的缺硼症状,表现在果面上有褐色凹陷状,可以看到单个的小斑点,严重时遍及整个果实.凹陷区下面的褐色果肉组织硬化。缺硼果实通常较早出现红色,不久即脱落.另一种缺硼果实症状,是在果肉里能形成果胶囊,可以从少数果实发展到整个果树。严重缺硼时植株的营养生长受到
The lack of boron in plum production in Alabama is no longer a new problem. The symptoms of boron deficiency were first discovered in 1963 in Ozark Premier plums in central Alabama. Nowadays, applying boron fertilizer to plum trees has become a necessary measure for plum harvest in this state. The lack of Boron fruit symptoms, manifested in the surface of the brown sunken shape, you can see a single small spots, severe throughout the whole fruit. Depression area below the brown flesh tissue hardening. The boron-deficient fruit usually appears red earlier and soon falls off.Another problem with boron-deficient fruit is the formation of pectic capsules in the flesh, which can grow from a few fruits to the entire fruit tree. The vegetative growth of the plant is severely affected by boron deficiency