@article{MAKHILLJAVA201312154217,
title = {Analysis and Study on Photosynthetic Physiological Characteristics of 4 Grass Species in Karst Rocky Desertification Area},
journal = {Journal of Animal and Veterinary Advances},
volume = {12},
number = {15},
pages = {1299-1306},
year = {2013},
issn = {1680-5593},
doi = {javaa.2013.1299.1306},
url = {https://makhillpublications.co/view-article.php?issn=1680-5593&doi=javaa.2013.1299.1306},
author = {Jin Hua,Yong Kuan,Kang Ning,Pan Di,Yuan Su and},
keywords = {Karst,rocky desertfication,Poaceae,net photosynthetic rate,transpiration rate,water use efficiency,diurnal variation},
abstract = {This study studies the net photosynthesis rate, transpiration
rate and water-use efficiency of four forage grasses as Bromus cartharticus
Vahl and Festuca elata ex E., Dactylis glomerata L. and perennial
Lolium perenne L. on fine days in Bijie Salaxi Karst rocky desertification
control area of Guizhou Normal University. The results showed that the average
daily water use efficiency ranks: (from high to low) Festuca elatal ex.
E., Bromus cartharticus Vahl, Dactylis glomerata and perennial
Lolium perenne L. In detail, the average daily photosynthetic and transpiration
rates of Festuca elatal ex E. are 6.234.53 (μ moL/(m2
sec)) and 6.23 (mol/(m2 sec)), respectively which belongs to high
photosynthesis, high transpiration type. On the contrary, Bromus cartharticus
Vahl, Dactylis glomerata L. and perennial Lolium perenne L.
belong to low photosynthesis, low transpiration type. The average daily photosynthetic
and transpiration rates are 4.87, 4.71, 4.53 (μmol/(m2 sec))
and 4.29, 4.42, 4.83 (mol/(m2 sec)), respectively. Net photosynthesis
rate, transpiration rate and water use efficiency should be considered when
researchers plant artificial pasture in Karst rocky desertification area. Meanwhile,
different pasture allocation measures can not only reduce transpiration and
water loss but also increase water use efficiency. These measures could ease
the current situation of water shortage in Karst rocky desertification area.
Both of changing the current planting situation of single sowing grass and conducting
the mixture sowing between leguminous forage and herbage with high and low photosynthetic
rate and transpiration rate are helpful for the diversity of biological populations
in Karst rocky desertification area and improving the production potential of
herbage.}
}