干旱胁迫对不同基质网袋桢楠幼苗生长及生物量的影响

doi:10.7525/j.issn.1673-5102.2018.01.010

植物研究 ›› 2018, Vol. 38 ›› Issue (1): 81-90.doi: 10.7525/j.issn.1673-5102.2018.01.010

干旱胁迫对不同基质网袋桢楠幼苗生长及生物量的影响

姚小兰¹, 周琳^1,4, 冯茂松¹, 郝建锋^1,2, 饶远林¹, 姚俊宇¹, 齐锦秋^1,3

1. 四川农业大学林学院, 成都 611130;
2. 水土保持与荒漠化防治实验室, 成都 611130;
3. 木材工业与家具工程重点实验室, 成都 611130;
4. 凉山州林业调查规划设计院西昌 615000

收稿日期:2017-06-07 出版日期:2018-01-15 发布日期:2018-01-06
通讯作者: 齐锦秋,E-mail:1092477321@qq.com E-mail:1092477321@qq.com
作者简介:姚小兰(1993—)女,硕士,主要从事森林生态学研究.
基金资助:
2015年科技厅苗子工程项目（035Z1305）；四川省教育厅一般项目（自然科学，15ZB0020）；国家自然科学基金（31370628）；四川农业大学双支计划（03571838）

Effects of Drought Stress on the Growth and Biomass of Phoebe zhennan'seedling in Different Substrates Net Container

YAO Xiao-Lan¹, ZHOU Lin^1,4, FENG Mao-Song¹, HAO Jian-Feng^1,2, RAO Yuan-Lin¹, YAO Jun-Yu¹, QI Jin-Qiu^1,3

1. College of Forestry, Sichuan Agricultural University, Chengdu 611130;
2. Key Laboratory for Soil and Water Conservation and Desertification Control, Chengdu 611130;
3. Wood Industry and Furniture Engineering Sichuan Provincial Colleges and Universities Key Laboratory, Chengdu 611130;
4. Liangshan Forestry Survey and Planning Institute, Xichang 615000

Received:2017-06-07 Online:2018-01-15 Published:2018-01-06
Supported by:
This work was supported by the Seedling Program in 2015 science and Technology Department (035Z1305); General Project of Department of Education in Sichuan Province (Natural Science,15ZB0020);National Natural Science Foundation of China (31370628);Double Support Plan in Sichuan Agricultural(03571838)

摘要/Abstract

摘要： 探讨不同育苗基质下桢楠（Phoebe zhennan）苗木对周期性干旱胁迫的适应能力及生存对策，为筛选抗旱育苗基质提供参考。以耕作土、森林腐殖土、泥炭土、蛭石为原料，按体积比配制成5种育苗基质，T1：耕作土=10（传统桢楠育苗）、T2：森林腐殖土=10、T3：耕作土：森林腐殖土：泥炭土：蛭石=4：3：2：1、T4：耕作土：森林腐殖土：泥炭土：蛭石=3：2：4：1、T5：耕作土：森林腐殖土：泥炭土：蛭石=2：1：6：1，采用随机区组设置干旱胁迫梯度，分析不同胁迫水平对桢楠幼苗生长的影响。结果表明：（1）配比基质的理化性质与苗木生长密切相关，正常浇水时，基质处理苗生长质量均优于传统育苗，但重度胁迫下，仅T3、T4处理苗木生长较好；（2）随着干旱胁迫程度的增加，各基质配比桢楠苗木株高、基径、叶面积、叶面积指数、地上生物量、地下生物量等生长指标均受到抑制，但受影响程度存在差异；（3）各基质处理苗木质量隶属函数值T3 > T4=T1 > T2 > T5，T3基质配比最优，所育苗木生长优良，耐旱抗旱性强，显著提高造林成效。表明适宜的基质配比能够协调植物生长所需的水、肥、气、热，有利于植物在逆境中生存。

关键词: 基质网袋育苗, 干旱胁迫, 桢楠, 苗木生长

Abstract: Adaptability and survival strategy of Phoebe zhennan in different substrates under periodic drought stress were studied to provide a reference for substrate selection of seedling cultivation to combat drought stress. According to the volume ratio, the seedlings of P.zhennan were cultured on five different substrates: T1: cultivated soil=10, T2: forest humus=10, T3: cultivated soil：forest humus：peat soil：pearlite=4：3：2：1, T4: cultivated soil：forest humus：peat soil：pearlite=3：2：4：1, T5: cultivated soil：forest humus：peat soil：pearlite=2：1：6：1. The drought stress gradients were designed randomly to study the effects of drought stress on the growth of P.zhennan seedling. The results were: (1)The physical and chemical properties of different substrates composition were closely related to the seedling growth and the seedling exhibited better growth performance in the substrates than traditional seedlings, but only T3 and T4 had better growth under heavy stress. (2)Along with the increase of the drought stress, the seedling height, basal diameter, leaf area, leaf area index, above ground biomass and underground biomass were aggravated, but the degree of influence was different. (3)The membership function value of the seedling quality was T3 >T4=T1 >T2 >T5, and T3 had the best quality and a strong tolerance of seedling to adapt to drought stress, improving the effectiveness of afforestation significantly. The suitable ratio of light substrates could coordinate the water, fertilizer, gas and heat, being propitious to the growth of the seedling in adversity.

Key words: cultivation seedling in substrates net container, drought stress, Phoebe zhennan, seedling growth

中图分类号:

S792.24

姚小兰, 周琳, 冯茂松, 郝建锋, 饶远林, 姚俊宇, 齐锦秋. 干旱胁迫对不同基质网袋桢楠幼苗生长及生物量的影响[J]. 植物研究, 2018, 38(1): 81-90.

YAO Xiao-Lan, ZHOU Lin, FENG Mao-Song, HAO Jian-Feng, RAO Yuan-Lin, YAO Jun-Yu, QI Jin-Qiu. Effects of Drought Stress on the Growth and Biomass of Phoebe zhennan'seedling in Different Substrates Net Container[J]. Bulletin of Botanical Research, 2018, 38(1): 81-90.

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干旱胁迫对不同基质网袋桢楠幼苗生长及生物量的影响

Effects of Drought Stress on the Growth and Biomass of Phoebe zhennan'seedling in Different Substrates Net Container

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