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苹果产量形成与其他作物一样,主要是光合产物的积累。光合产物的积累首先取决于叶片进行的光合作用过程。叶的发生,叶片和叶幕的形成特性及其光合功能对光合产物的积累和分配有重要意义。望月武雄曾指出苹果枝条上叶片面积的变異因分布节他不同发生有规律的变化,农业技术措施对后期形成叶的面积大小影响较大,但未说明与叶发生的关系。薛尔盖耶夫等指出叶片光合强度与叶龄有关;德拉加夫采夫指出苹果叶片光合强度在一日内有二个高峯;也均未说明植株整体的光合性能与需光范围。本课题的研究目的卽在于,研究各类植株叶发生特性,叶及叶幕形成,叶幕结构与叶幕生产的性能,为拟定控制花芽形成、开花、座果,克服大小年等农业技术措施提供依据。
The formation of apple yields is the same as that of other crops, mainly the accumulation of photosynthetic products. The accumulation of photosynthetic products first depends on the photosynthetic process carried out by the leaves. The occurrence of leaves, the forming characteristics of leaves and leaf curtains and their photosynthetic functions have important implications for the accumulation and distribution of photosynthetic products. Mochizuki Mochizuki has pointed out that the variation of leaf area on apple branches varies regularly due to different distribution stages. Agricultural techniques have a greater impact on the area of late-formed leaves, but they do not explain the relationship with leaf emergence. Shirgayev pointed out that the leaf photosynthetic intensity is related to the leaf age; Draganov said that the photosynthetic intensity of apple leaves had two peaks in one day; and neither did the photosynthetic performance and the light demand range of the whole plant. The purpose of this research is to study the occurrence characteristics of leaves, the formation of leaf and leaf curtain, the structure of leaf curtain and the performance of leaf curtain production. In order to formulate the agricultural technical measures to control flower bud formation, flowering, fruit set, Provide evidence.