ISWC OpenIR  > 水保所知识产出(1956---)
黄土塬区降水变化对冬小麦叶片形态和生物量的影响
倪盼盼1,3; 朱元骏1,2; 崔亚强2
2016
Source Publication水土保持研究
Volume23Issue:6Pages:116-121
Abstract

明确降水变化对冬小麦叶片形态和生物量的影响,有助于了解冬小麦在水分环境变化条件下形态和产量上
的响应。试验采用人工遮雨棚和自流滴灌系统来实时人工干预降水,研究了黄土塬区三种降水条件:正常降水(CK)、
降水减少1/3(R-1/3)和降水增加1/3(R+1/3)下冬小麦不同生育期的叶片形态、生物量及株高变化。结果表明:降水增
加,叶长相对变化较大,叶面积增加;降水减少,叶宽相对变化较大,叶面积减少。但叶形系数((叶长×叶最大宽)/叶
面积)不受降水变化的影响,仅和冬小麦的生育期有关。降水增加,冬小麦的叶片、生物量以及株高均保持稳定的生长
优势;降水减少,冬小麦叶片、生物量以及株高的生长呈现“先促后抑”的现象。不同降水处理的冬小麦生物量和叶面
积均呈明显的线性正相关,减少降水处理的冬小麦生物量对叶面积变化最敏感。总之,在黄土塬区冬小麦通过叶片
形态、叶面积和生长速率的改变来影响光合产物积累和产量形成,以适应不同的水分环境。

Other Abstract

Determining the effects of rainfall change on winter wheat leaf morphology and biomass can help understand
the responses of winter wheat morphology and yield to water environment change in the loess tableland.
We took a real-time rainfall control technique composing of artificial rainfall-shields and gravitational
trickle irrigation system to investigate the effects of three rainfall treatments such as normal rainfall(CK),
rainfall reducing 1/3 (R-1/3),and rainfall increasing 1/3 (R+1/3)on leaf morphology,biomass and stem
length of winter wheat in the different growth periods in the loess tableland.The results indicated that the
leaf length relatively changed more and the leaf area increased in the treatment of R+1/3.While in the treatment
of R-1/3,the leaf width relatively changed more and the leaf area decreased.The leaf shape index[(leaf
length×leaf maximum width)/leaf area]was hardly affected by rainfall change and yet mainly depended on
the growth period of winter wheat.In the treatment of R+1/3,winter wheat leaves,biomass and stem length
all kept stable growth superiority in the whole growth period.While in the treatment of R-1/3,they were all
promoted in the beginning period and restrained in the later period.Winter wheat biomass and leaf area were
positively linearly correlated under different rainfall conditions.Winter wheat biomass was the most sensitive
to the changes of leaf area in the treatment of R-1/3.Generally,winter wheat can change its leaf shape,leaf
area and growth speed to affect photosynthate accumulation and yield so as to adapt different water environments
in the loess tableland.

Keyword降水变化 叶片形态 生物量 冬小麦 黄土塬区
Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8619
Collection水保所知识产出(1956---)
Affiliation1.中国科学院水利部水土保持研究所
2.西北农林科技大学黄土高原土壤侵蚀与旱地农业国家重点实验室
3.中国科学院大学
First Author Affilication中国科学院水利部水土保持研究所
Recommended Citation
GB/T 7714
倪盼盼,朱元骏,崔亚强. 黄土塬区降水变化对冬小麦叶片形态和生物量的影响[J]. 水土保持研究,2016,23(6):116-121.
APA 倪盼盼,朱元骏,&崔亚强.(2016).黄土塬区降水变化对冬小麦叶片形态和生物量的影响.水土保持研究,23(6),116-121.
MLA 倪盼盼,et al."黄土塬区降水变化对冬小麦叶片形态和生物量的影响".水土保持研究 23.6(2016):116-121.
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