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本文研究了山葡萄对晚秋叶施~(15)N-尿素的吸收、运转、贮藏及再分配利用的特点。结果表明,山葡萄幼树晚秋叶施尿素后可很快被叶吸收并运到树体各部分,Ndff从叶运到根中(距离40cm)只需48小时,且运到根中后即部分形成蛋白质。休眠期80.02％的Ndff贮藏在根中,特别是细根,52.39％Ndff以蛋白态形式贮藏。翌春葡萄开始生长后,Ndff较总N优先用于新梢和叶片等新生器官的生长。不同时期,Ndff％最高的器官不同,一般生长活跃器官的Ndff％高。次年秋季,叶中Ndff仍可部分回流到树体内,第3年春天仍有小量Ndff重新分配到新生器官。Ndff可被山葡萄重复利用3年。
This paper studied the grapevine on late autumn leaves Shi ~ (15) N-urea absorption, operation, storage and redistribution of the characteristics. The results showed that the leaves of young grape could be quickly absorbed by the leaves and transported to the parts of the tree after applying urea in late autumn. The Ndff was only 48 hours transported from the leaf to the root (distance 40cm) protein. Ndff stored in the roots at 80.02% dormancy, especially fine roots, and 52.39% Ndff stored in protein form. After the next spring grapes began to grow, Ndff than the total N priority for new shoots and leaves and other new organ growth. Different periods, Ndff% of the highest organs are different, the average growth of active organs Ndff% high. In the following autumn, Ndff could still be partly returned to the tree in the leaves, and a small amount of Ndff was still redistributed to new organs in the third spring. Ndff can be reused for 3 years in mountain grapes.