关键词: 土温升高, 湿草甸小叶章, 生理生态, 石墨烯, 植物, 毒理, 激素, 基因, 胁迫

Abstract: By using improved heating cables, a field experiment was conducted to
study the effects of 1 ℃〖KG-*2〗-〖KG-*7〗30 ℃ soil warming on the growth and phys
iological characters of Deyeuxia angustifolia. Soil warming obviously promoted t
he growth of D. angustifolia. Under flooded condition, the plant height incr
eased by 182%, leaf area increased by 3732%, root volume increased by 2467
%, total root absorbing area increased by 60%, and tillers number increased by 2
581%; under un-flooded condition, the plant height increased by 1209%, leaf
 area increased by 329%, root volume increased by 3626%, total root absorbin
g area increased by 3747%, an
d tillers number increased by 3277%. The responses of D. angustifolia phys
iolog
ical indices to soil warming were more obvious under flooded than under un-floo
d
ed condition. Under flooded condition, the total chlorophyll content and root so
luble protein content increased by 98% and 2388%, while the leaf soluble pro
te
in and soluble carbon contents and root soluble carbon content decreased by 25
0
2%, 2292%, and 3523%, respectively. 1 ℃〖KG-*2〗-〖KG-*7〗30 ℃ soil warming pro
moted the growth of
D. angustifolia, but the responses of its physiological characters to the so
il warming varied with water conditions.

Key words: soil warming, Deyeuxia angustifolia, eco-physiology, plant, hormone, gene., toxicology, graphene, stress