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铁皮石斛的生态栽培、逆境多糖合成与鲜汁流变学
从景天酸代谢、水汽压差控水、生长分化平衡到夜间核心体温调节的植物生理与生物物理学
Ecological Cultivation, Stress-Induced Polysaccharide Synthesis and Fresh-Extract Rheology of Dendrobium officinale: CAM Photosynthesis, VPD Water Control, Growth-Differentiation Balance and Nocturnal Core-Body-Temperature Regulation
DOI10.5281/zenodo.23729740摘要
铁皮石斛的品质主要看茎中乙酰化葡甘露聚糖的含量，而浇水、施肥、夜温和防病的决定同时影响产量与品质。本书用植物生理学和物理学考察这些决定：铁皮石斛作为 C3–CAM 中间型植物在夜间固碳的证据；用泰滕斯公式计算饱和水汽压差（VPD）与露点，并用叶片能量平衡说明夜间气流如何防止结露、在不喷药的情况下降低病害风险；生长–分化平衡假说与一个碳收支模型，显示低氮、干湿循环和凉爽夜晚提高多糖占比、但可能降低产量与每丛多糖总量，以及「仿野生附树栽培多糖更低」等调查结果；兰科菌根、树皮与砾石基质的持水曲线和氧扩散，以及肥料盐分对根区水势的影响；奥斯特瓦尔德–德瓦勒幂律与多糖溶出动力学；核心体温、远端皮肤升温与睡眠的证据，以及一个双室体温模型，说明一杯热饮的热量太小、不足以改变受调节的核心体温；哈根–泊肃叶定律与柑橘黄龙病的筛孔堵塞和热处理证据。
八章与《神农本草经》、寇宗奭《本草衍义》和赵学敏《本草纲目拾遗》并读，并指出「九大仙草」等说法找不到出处；最后给出种植者每周四步核查（VPD 湿润小时数、排出液 EC、昼夜温差、多糖），以及一项比较铁皮石斛鲜条煎煮液与温度、黏度匹配的黄原胶安慰剂的预注册双盲交叉试验（主要结局为多导睡眠图慢波睡眠，次要结局为远端–近端皮肤温差；36 人完成，判定规则写成代码）。书中以标注框区分已发表的证据、可运行的 Python 计算（14 段程序，全部核对）、原典与作者的假说。健康提示：本书不是医疗建议，不声称铁皮石斛能治疗失眠或任何疾病。
关键词：铁皮石斛；葡甘露聚糖；景天酸代谢；饱和水汽压差；露点；叶面湿润；生长分化平衡假说；兰科菌根；基质通气；幂律流体；流变学；核心体温；慢波睡眠；哈根泊肃叶定律；柑橘黄龙病
Abstract
The quality of Dendrobium officinale is judged chiefly by the acetylated glucomannan in its stems, and the grower's decisions about water, fertiliser, night temperature and disease control shape both yield and quality. This book examines those decisions with plant physiology and physics: the evidence that D. officinale is a C3–CAM intermediate that fixes part of its carbon at night; vapour-pressure deficit and dew point from the Tetens formula, and a leaf energy balance showing how night-time air movement prevents dew and lowers disease risk without sprays; the growth–differentiation balance hypothesis and a carbon budget showing that low nitrogen, drying cycles and cool nights raise the polysaccharide share but can lower yield and total polysaccharide, beside surveys finding less polysaccharide in tree-grown "wild-like" stems; orchid mycorrhiza, the water retention and oxygen diffusion of bark and gravel media, and the effect of fertiliser salts on root-zone water potential; the Ostwald–de Waele power law and the kinetics of polysaccharide release; the evidence linking core temperature and distal skin warming to sleep, with a two-compartment model showing that the heat in a warm drink is too small to change a regulated core temperature; and the Hagen–Poiseuille law with the evidence on sieve-pore plugging and heat treatment in citrus greening.
The eight chapters are read beside the Shennong Bencao Jing, Kou Zongshi's Bencao Yanyi and Zhao Xuemin's Bencao Gangmu Shiyi, noting claims such as the "nine immortal herbs" that have no traceable source, and end with a four-step weekly check for growers (VPD wet hours, drainage EC, day–night difference, polysaccharide) and a pre-registered double-blind crossover trial comparing a fresh-stem decoction with a xanthan placebo matched for temperature and viscosity, with slow-wave sleep by polysomnography as the primary outcome and the distal–proximal skin temperature gradient as a secondary outcome (36 completers, with the decision rule written as code). Marked boxes separate published evidence, runnable Python calculations (14 programs, all checked), classical sources and the author's hypotheses. Health notice: this book is not medical advice and does not claim that D. officinale treats insomnia or any disease.
Keywords: Dendrobium officinale; glucomannan; crassulacean acid metabolism; vapour pressure deficit; dew point; leaf wetness; growth-differentiation balance hypothesis; orchid mycorrhiza; substrate aeration; power-law fluid; rheology; core body temperature; slow-wave sleep; Hagen-Poiseuille; huanglongbing
目录 · Contents
- 序：温室里的崖壁兰花English 中文Preface: A Cliff Orchid in a Greenhouse
- 第一章 崖壁生境的物理学English 中文Chapter 1 The Physics of a Cliff Habitat
- 第二章 生长还是贮藏English 中文Chapter 2 Growth or Storage
- 第三章 根、真菌与基质English 中文Chapter 3 Roots, Fungi and Substrate
- 第四章 从鲜条到杯中English 中文Chapter 4 From Stem to Cup
- 第五章 体温与睡眠English 中文Chapter 5 Body Temperature and Sleep
- 第六章 植物中的管道English 中文Chapter 6 Pipes in Plants
- 第七章 原典English 中文Chapter 7 The Classics
- 第八章 实践与预注册试验English 中文Chapter 8 Practice and a Pre-registered Trial
How to cite · 引用
Fan, Y. (2026). Ecological Cultivation, Stress-Induced Polysaccharide Synthesis and Fresh-Extract Rheology of Dendrobium officinale: CAM Photosynthesis, VPD Water Control, Growth-Differentiation Balance and Nocturnal Core-Body-Temperature Regulation [铁皮石斛的生态栽培、逆境多糖合成与鲜汁流变学] (Version 1.0.0). 5D Library. https://doi.org/10.5281/zenodo.23729740
BibTeX
@book{fan2026dendrobium,
title = {{Ecological Cultivation, Stress-Induced Polysaccharide Synthesis and Fresh-Extract Rheology of Dendrobium officinale}: CAM Photosynthesis, VPD Water Control, Growth-Differentiation Balance and Nocturnal Core-Body-Temperature Regulation},
author = {Fan, Yafu},
year = {2026},
publisher = {5D Library},
edition = {Version 1.0.0},
doi = {10.5281/zenodo.23729740},
url = {https://doi.org/10.5281/zenodo.23729740},
note = {Chinese title: 铁皮石斛的生态栽培、逆境多糖合成与鲜汁流变学}
}
| DOI | https://doi.org/10.5281/zenodo.23729740 |
|---|---|
| DOI（全部版本 all versions） | https://doi.org/10.5281/zenodo.23729739 |
| ORCID | https://orcid.org/0009-0004-3519-1203 |
| 5D Library ID | 5DL-B-012 |
| 版本 Version | 1.0.0 · 中英双语版 Bilingual edition |
| 出版日期 Date | 2026-10-28 |
| 网址 Online | https://5dlibrary.com/books/dendrobium-cultivation-thermodynamics/ |
| SHA-256 · dendrobium-cultivation-thermodynamics_bilingual_v1.0.0.pdf | 750bdfa2cd63f1a262d69b17fb7e16ea9adf444e16d8591ae7d97406cb4516a7 |
| SHA-256 · dendrobium-cultivation-thermodynamics_en_v1.0.0.pdf | 7a0bdca06426e79f5d263be6bcf8be50d95ad56ff2a3414c9748e5c197be5f00 |
| SHA-256 · dendrobium-cultivation-thermodynamics_zh_v1.0.0.pdf | 17807343075d15c6e7483856854c6ed66109bda4926c7bb36b2cb2f1d4afcf71 |
| Licence · 许可 | Licensed under Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0). https://creativecommons.org/licenses/by-nc-nd/4.0/ |
Disclosure. The author runs dendrobiumofficinale.com, a business that sources and supplies Dendrobium officinale, and uses this book in discussions with plantations about cultivation and standards partnerships, and so has a direct commercial interest in its subject and in the result of the Chapter 8 trial. The book names no plantation, brand or product and makes no health claim for any product; the trial is designed to be run and analysed by researchers independent of the author's business; all the code and the study protocol are published openly for anyone to check.