中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
黄土丘陵区白羊草与达乌里胡枝子混播的光合生理日变化研究

文献类型:期刊论文

作者王京 ; 徐炳成 ; 高志娟 ; 段东平 ; 牛富荣 ; 徐伟洲
刊名草 地 学 报
出版日期2012
卷号20期号:04页码:629-635
关键词白羊草 words:Bothriochloa ischaemum 达乌里胡枝子 Lespedeza davurica 混播比例 Mixed sowing ratios 光合生理 Photosynthetic physiology 生态替代法
其他题名Photosynthetic Diurnal Changes of Bothriochloa ischaemum Mixed Sowing
中文摘要采用生态替代法,按照白羊草(Bothriochloa ischaemum,B)和达乌里胡枝子(Lespedeza davurica,D)行比设置了7种混播比例组合(即0∶10,2∶8,4∶6,5∶5,6∶4,8∶2和10∶0),比较研究了白羊草在不同混播比例组合下的光合生理日变化特征。结果表明:不同混播比例组合下,白羊草光合速率日变化均呈双峰曲线,具有明显的光合"午休"现象,峰值分别出现在10:00和16:00左右,峰谷出现在12:00左右;除B4D6比例下白羊草蒸腾速率日变化呈双峰曲线外,其他比例下均呈单峰曲线;各混播比例组合下白羊草叶片水分利用效率日变化均呈双峰曲线,峰值和峰谷出现时间与光合速率一致。相比其他组合比例,白羊草在B8D2和B6D4比例下均具有较高的Pn日均值,较低的Tr日均值和较高的WUEL日均值,说明这2种组合比例有利于改善其光合作用,提高其叶片水分利用效率。
英文摘要ield experiments were conducted using a replacement series design in which Bothriochloa ischaemum(
B)and Lespedeza davurica(D)were sowed at row ratios of 0∶10,2∶8,4∶6,5∶5,6∶4,8∶2
and 10∶0in the same plot.The photosynthetic diurnal change characteristics of B.ischaemumin different
mixed sowing ratios were investigated and compared.Results indicated that the diurnal changes of net photosynthetic
 rate of B.ischaemumpresented a double-peak pattern cure under different mixed sowing ratios,
showing obvious photosynthesis midday depression phenomenon.Peak values appeared at 10:00and
16:00,respectively,while the lowest value appeared at 12:00.Except at B4D6ratio,in which the transpiration
 rate diurnal changes of B.ischaemumpresented a double-peak pattern cure,the curves had only one
peak at the other mixed sowing ratios.Diurnal change of leaf instantaneous water use efficiency presented
a double-peak pattern cure at all mixed sowing ratios,and the peak and lowest values appeared at the same
time as photosynthetic rate.Compared with other ratios,B.ischaemum had higher daily average photosynthetic
 rate,higher daily average leaf water use efficiency and lower daily average transpiration rate at
B8D2and B6D4ratios,which indicated that these two mixed sowing rations are beneficial to improve the
photosynthesis and leaf water use efficiency of B.ischaemum.
语种中文
公开日期2014-08-27
源URL[http://ir.iswc.ac.cn/handle/361005/5434]  
专题水土保持研究所_水保所知识产出(1956-2013)
推荐引用方式
GB/T 7714
王京,徐炳成,高志娟,等. 黄土丘陵区白羊草与达乌里胡枝子混播的光合生理日变化研究[J]. 草 地 学 报,2012,20(04):629-635.
APA 王京,徐炳成,高志娟,段东平,牛富荣,&徐伟洲.(2012).黄土丘陵区白羊草与达乌里胡枝子混播的光合生理日变化研究.草 地 学 报,20(04),629-635.
MLA 王京,et al."黄土丘陵区白羊草与达乌里胡枝子混播的光合生理日变化研究".草 地 学 报 20.04(2012):629-635.

入库方式: OAI收割

来源:水土保持研究所

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