葡萄生长发育至少需要40种以上的营养元素,除碳、氢、氧外,所需较多的大量元素有氮、磷、钾、钙、镁等,需要量很少的微量元素有铁、硼、锌、锰、铜等。以上二类元素都直接参与了葡萄的生理活动,其功能各异,彼此不可替代,缺乏其中任何一种,都会出现缺素症。 1.缺氮症与矫治葡萄缺氮,植株瘦弱,枝蔓短而细,皮层呈红褐色,很早即停止生长;叶片小而薄,呈黄 Grape growth and development at least 40 kinds of nutrients required, in addition to carbon, hydrogen, oxygen, the more elements needed more nitrogen, phosphorus, potassium, calcium, magnesium, trace elements with little iron and boron , Zinc, manganese, copper and so on. The above two kinds of elements are directly involved in the physiological activities of grapes, its function is different, each other irreplaceable, the lack of any one, there will be lack of disease. 1. Nitrogen deficiency and correction of grape nitrogen deficiency, plant thin, short and thin branches, cortex reddish brown, very early to stop growth; leaves small and thin, yellow