Foliar absorption of rainfall water can greatly improve water condition and meet water needs for plants in arid and semi-arid areas, and the characteristics analysis of direct foliar rainwater absorption have an important significance for the adaptive strategies research of plant water physiology ecology. To research the foliar absorption characteristics of rainfall water in Horqin Sandy Land, three common plants (Artemisia halodendron, Caragana microphylla and Salsola collina) were selected to study the characteristics of foliar absorption by the control experiments of natural rainfall, foliar water-exclusion and root water-exclusion, and the dynamics of plant water potential before and after rainfall were measured by the pressure chamber method. The results showed that:(1) compared with before rainfall, the plant water potential of A. halodendron, C. microphylla and S. collina approximately increased 66.7%, 59.5% and 87.9% after the rain, respectively, and the plant water potential in second day increased 73.2%, 86.7% and 90.6%, respectively. (2) No significant difference of water potential in stem and leaves of A. halodendron and S. collina were detected between the rainwater-exclusion experiments of different position, but water potential in stem and leaves of C. microphylla had significant difference. (3) Our results suggested that the common plants of A. halodendron, C. microphylla and S. collina in Horqin Sandy Land all have the function of direct foliar rainwater adsorption, and that C. microphylla is more able to adapt the survival environment in Horqin Sandy Land compared with A. halodendron and S. collina.
Chelmeg
,
Liu Xinping
,
He Yuhui
,
Wang Mingming
,
Wei Shuilian
,
Li Yulin
,
Sun Shanshan
. Characteristics on Direct Foliar Rainwater Absorption of Several Common Plants in Horqin Sandy Land[J]. Journal of Desert Research, 2018
, 38(5)
: 1017
-1023
.
DOI: 10.7522/j.issn.1000-694X.2018.00069
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