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果树碳素营养的特点果树和其它植物一样,树体干重的90—95％来自光合作用。从植物生理学的角度来看,树休根、茎、叶、花、果、种子都是产量,或称生物产量,果树的果实或种子为经济产量。由于果树是多年生植物,光合产物不仅要保证获得当年的经济产量,还要供应枝、根、茎的生长和贮备。特别是落叶果树,早春的萌芽、开花、产果、果实的初期发育以及枝叶的初期生长,都
Characteristics of Fruit Tree Carbon Nutrition Fruit trees, like other plants, account for 90-95% of the dry weight of the tree stems from photosynthesis. From the point of view of plant physiology, the roots, stems, leaves, flowers, fruits and seeds of trees are yield, or biological yield, and the fruits or seeds of fruit trees are economic output. Since fruit trees are perennials, photosynthetic products should not only ensure the economic output of that year but also supply the growth and reserve of branches, roots and stems. In particular, deciduous fruit trees, buds in early spring, flowering, fruit and fruit, the initial development of fruits and leaves and the initial growth, are