[J].Northern Horticulture,2018,42(03):205-207.[doi:10.11937/bfyy.20172470]
树龄与相对树龄研究
- 文献标志码:
- A
- 摘要:
- 园艺界中有一种普遍说法,“从多年生果树上取接穗,使苗木提前进入结果期”。这是对树龄的本质属性未能客观、准确把握所致的误导,此法不但不能使苗木提前进入结果期,反而大大增加了感染腐烂病的机率。因此果树相对龄是亟待解决的原始理论课题。多年来,以大量不同树龄果树为试材,用嫁接、中断等方法,验证了树的各部位年龄各不相同、相对龄的客观存在性、寻求到果树某部位中断后的内部生命规律。相对龄是与实际龄相对比较而存在之龄,顾名思义相对龄是实际年龄在一定程度上折扣后的年龄,三者间关系可用N=M-X表示(N:相对龄,M:实际龄,X:折扣龄,M-1≥X≥1)。该理论可应用于果树某部位中断后重新利用价值的评估、嫁接部位科学确定、接穗来源合理确定等诸多方面。
参考文献/References:
[1]高新.果树嫁接新技术[M].北京:金盾出版社,2003.
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备注/Memo
作者简介:张昌龙(1938-),男,本科,特级教师,现主要从事果树嫁接与玉米螟生活规律及白蜡蚧生物学特性与综合防治等工作。E-mail:zhangyh2070@sina.com.