|本期目录/Table of Contents|

土壤水分含量对草草坪生理生态特征影响的研究(PDF)

《内蒙古大学学报(自然科学版)》[ISSN:1000-9035/CN:22-1262/O4]

期数:
2015年06期
页码:
595-599
栏目:
研究论文
出版日期:
2015-11-20

文章信息/Info

Title:
Effects of Different Soil Moisture Content on the Eco-physiological Characteristics of Koeleria cristata Turf
作者:
贺娇 王艳荣 张峰 周澎 王利东 赵远
内蒙古大学生命科学学院, 呼和浩特 010021
Author(s):
HE Jiao WANG Yan-rong ZHANG Feng ZHOU Peng WANG Li-dong ZHAO Yuan
School of Life Science, Inner Mongolia University, Hohhot 010021, China
关键词:
草草坪土壤水分含量生理生态学特征
Keywords:
Koeleria cristata turfsoil water contenteco-physiological characteristics
分类号:
Q145+.1
DOI:
-
文献标识码:
-
摘要:
在2012年6-9月期间,以草地早熟禾草坪为对照,研究了3种土壤水分含量对草草坪生态生理特征的影响,结论如下:1)草最大草群高度低于20cm,平均分蘖数为63个/株,草屑量和根系量分别为草地早熟禾草坪的75.06%和58.54%,表现出明显的低高度、密丛生和对土壤营养物质低消耗的特点;2)同一水分处理下草叶片含水量、游离脯氨酸含量都分别低于草地早熟禾,草日均蒸腾速率是草地早熟禾的75.16%,日均水分利用率为草地早熟禾1.32倍,草草坪群落日平均蒸散率比草地早熟禾草坪低24%左右;3)40%FC处理下草草坪的株高、分蘖数、盖度、地下生物量都分别显著低于60%FC和80%FC水分处理,但各个生理指标在三个水分处理间均没有显著差异.
Abstract:
The effect of soil moisture on the eco-physiological characteristics of Koeleria cristata (K.cristata) turf was studied during June to September in 2012,while Poa pratensis (P.pratensis) turf was used as control.The results indicated that:1) The grass height of K.cristata was below 20cm,while its average tiller number was 63 per plant.Moreover,K.cristata’s grass clipping production and root biomass were only 75.06% and 58.54% of P.pratensis’s respectively,indicating that it had the characteristics of low height,densely cluster and low soil nutrition consumption.2) The leaf water content,free proline content of K.cristata were significant lower than P.pratensis,while the average daily transpiration rate and the average water utilization efficiency of K.cristata were 75.16% and 1.32 times of P.pratensis under the same soil moisture.The daily evapotranspiration rate of K.cristata turf was 24% lower than P.pratensis turf.3) The grass height,tiller number,coverage rate,underground biomass of K.cristata turf under 40% field water-holding capacity (FC) were significantly lower than that under 60% and 80%FC in water treatment,but those physiological parameters had no significant differences among the three treatments.

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备注/Memo

备注/Memo:
收稿日期:2014-10-23;改回日期:2015-08-21。
基金项目:内蒙古大学草地生态学重点实验室资助项目
作者简介:贺娇(1990-),女,内蒙古乌兰察布人,2012级硕士研究生.
通讯作者:王艳荣(1964-),女,内蒙古呼伦贝尔人,教授,博士.研究方向为植被生态学.E-mail:15047805305@163.com.
更新日期/Last Update: 1900-01-01