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在果树的叶面上应用的的吸收和转移到水果中
Hitoshi Kawabata1, Masumi Yanai1, Yuichi Takaku1,2
1Department of Radioecology, Institute for Environmental Sciences, 1-7 Rokkasho, Aomori 039-3212, Japan.
Radiation protection dosimetry
|November 14, 2024
概括
-137 (Cs) 应用于果树的叶子迅速转移到水果上. 吸收率和转移率因水果生长阶段而异,模型显示需要进一步研究.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 植物生理学 植物生理学
背景情况:
- 了解果树中的 (Cs) 离子行为对于食品安全和环境管理至关重要.
- 植物中的吸收和转移可能受到各种因素的影响,包括植物物种,生长阶段和应用方法.
研究的目的:
- 为了研究稳定的-137 (Cs+) 离子从叶面转移到不同水果发育阶段的梅叶类果树 (Malus domestica"Alps Otome") 的果实.
- 确定Cs在收获时转移到水果中的比例,并分析水果生长阶段对Cs吸收和转移的影响.
主要方法:
- 稳定的Cs+离子被滴滴地应用到2-3岁的果树的叶面上,在三个不同的果实生长阶段:产前,早期发育和晚期发育.
- 在叶子,树枝和果实中测量的度,测量时间,直到收获.
- 构建一个隔间模型来描述Cs转移动态.
主要成果:
- 大多数应用的Cs从叶面迅速转移到叶子中,然后通过树枝转移到果实上.
- 收获时转移到水果中的Cs的平均比例在11%到30%之间,没有直接依赖于水果生长阶段.
- 与产前阶段相比,在早期和晚期的水果发育阶段,Cs从叶子表面的吸收速度更快.
结论:
- 转移到果的过程是通过叶子的吸收和随后通过树枝的移动.
- 虽然Cs转移率随着水果的发育而变化,但到收获时到达水果的总比重是显著的.
- 目前的区间模型需要改进,这表明需要进一步研究,以充分阐明果树中的Cs转移机制.
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