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苹果供试砧木的根系吸收活动,叶器官的光合活性和植株的生物学产量以及吸收的无机元素在形成生物学产量上的利用效果,都有重大差异。根的吸收活动和植株的生物学产量存在着复杂的关系。试验各年的无机元素间的比例,对每种类型的砧木来说,都是稳定的和有特点的。执行着吸收、合成和分配功能的根系,大多数情况下,是一种通过它影响植株产量的器官。因此,把大量工作投在植株根系的研究上,并且,植株根营养的遗传型特性研究得不够,虽然在制定基于品种生物学特性的无机养分划分法时,它是很重要的。
There were significant differences in the root absorption activities of apple rootstocks tested, the photosynthetic activity of leaf organs and the biological yield of the plants as well as the utilization of absorbed inorganic elements in the formation of biological yield. There is a complex relationship between root absorption and plant biological yield. The ratio of inorganic elements tested for each year is stable and characteristic for each type of rootstock. The roots that carry out the functions of absorption, synthesis and distribution are, in most cases, organs through which the yield of the plant is affected. Therefore, a great deal of work has been devoted to the study of plant roots, and the genetic character of plant root nutrition has not been well studied, although it is important in the development of an inorganic nutrient division based on the biological characteristics of the species.