| 核桃伤流研究述评 |
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| 引用本文： | 裴东. 核桃伤流研究述评[J]. 林业科学, 2010, 46(3) |
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| 作者姓名： | 裴东 |
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| 作者单位： | 中国林业科学研究院林业研究所,北京,100091 |
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| 基金项目： | 国家科技支撑项目(2006BAD18B0203);;国家自然科学基金项目(30671436) |
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| 摘 要： | 核桃属是极容易产生伤流的树种之一。核桃伤流不仅是重要的生物学现象,也影响到修剪、嫁接等一些农艺措施的效果和成败。核桃属有别于多数其他树种,除了春季伤流外还存在秋季伤流和土壤结冻期间的冬季伤流,甚至在生长季也可以发生伤流。核桃秋季和春季伤流源于根压,而冬季伤流源于茎压。根压伤流主要取决于根系活力等,而茎压伤流是非结冰条件下冻-融循环引起枝干可溶性物质含量提高、压强增大造成的,茎压伤流还与木质部栓塞修复密切相关。2种伤流组分也有较大不同。文中对国内外核桃伤流的研究进行梳理和归纳,对一些重要结果进行评述,以期对核桃伤流发生机制有较全面和系统的认识,为改进和优化农艺措施提供理论指导。文中也就需进一步研究的问题进行讨论,提出初步的意见和建议。
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| 关 键 词： | 核桃 伤流 根压 茎压 |
A Research Review on Walnut Xylem Exudation |
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| Pei Dong. A Research Review on Walnut Xylem Exudation[J]. Scientia Silvae Sinicae, 2010, 46(3) |
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| Authors: | Pei Dong |
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| Affiliation: | Research Institute of Forestry/a>;CAF Beijing 100091 |
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| Abstract: | Walnut is a tree species that exudation occurs frequently. Walnut exudation is not only an important biological phenomenon,also related to the effect of pruning and the success of grafting. Therefore,it has received more attention over years and a series of researches have been conducted. Different from most other tree species that exudation occurs normally in spring,walnut exudation can happen in spring,autumn,winter and even in growth season of summer. It was found that spring exudation was generated from... |
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| Keywords: | Juglans regia exudation root pressure stem pressure |
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