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1962—1964年应用放射性示踪原子的方法,研究茶树磷肥吸收运转规律,初步确定幼令茶树根部标记磷~(32)以7—9月吸收较多,其中又以7月为多,为幼年茶树施用磷肥提供了新的依据。通过叶片标记证明,茶树叶片同样具有强烈吸收磷~(32)的能力,因此茶树根外追肥具有重要的生产和实践意义。试验还进一步证明,留叶采摘可以提高磷~(32)的吸收强度,因而在茶树栽培技术上,控制一定数量的叶片是十分值得注意的问题。
From 1962 to 1964, the law of radioactive tracer atom was used to study the absorption and movement of phosphate fertilizer in tea plantation. It was initially determined that phosphorus (32) in the root of young tea plantlet was absorbed more in July-September, of which more was in July and juvenile Tea tree phosphate fertilizer provides a new basis. Leaf marker proved that tea leaves also have a strong ability to absorb phosphorus (32), so tea tree top dressing has important production and practical significance. The test further proves that leave-leaf picking can improve the absorption intensity of phosphorus ~ (32), and controlling the number of leaves in tea cultivation technique is a very important issue.