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锌肥(上)一、锌在植物体内的含量、分布和生理作用植物体内的锌主要集中在幼嫩部位.缺锌时,植物体内的锌大部分可重新分配,优先输送给根尖、生长点以及顶端第一片叶,下部叶片含量逐减.施锌与不施锌作物比较,中部叶片中锌的含量差异较大,以此为缺锌诊断的取样部位.植物各部位的含锌量是不同的,水稻根中(73.3ppm)多于茎叶(35.3ppm),茎叶中多于种子(19.5ppm).
Zinc fertilizer (a), zinc in the plant content, distribution and physiological role of plant zinc in the body mainly concentrated in young parts.Zinc deficiency, the plant most of the zinc can be redistributed, give priority to the root tip, growth Point and top of the first leaf, the lower leaf content decreased.Zinc and zinc-deficient crops, the central leaf zinc content greater difference, as a zinc-deficient diagnosis of sampling sites.Zinc content of various parts of the plant Are more different in rice roots (73.3 ppm) than in stems and leaves (35.3 ppm) and in stem leaves more than seeds (19.5 ppm).