关键词: 地温极值, 覆膜, 裸地, 棉花, 玉米

Abstract: As an exotic invasive species, Spartina alterniflora Loisel strongly disturbs the structure and function of native ecosystems, but at the same time, it is also a potential bio-energy source due to its high standing biomass. To develop this bioenergy source is an efficient and useful way in fully utilizing the resource of S. alterniflora while control its crazy expansion, being of both ecological and economic significances. In this paper, the utilization potential of S. alterniflora as a bio-energy source, including the superiority of its biomass resources at both temporal and spatial scales, its highefficient photosynthetic mechanisms and high productivity, its high energy storage and higher contents of carbohydrate, protein and fat, and the unoccupying of crop land, etc., was summarized, and the present situations about the exploitation and utilization of S. alterniflorawere introduced. It was pointed out that the exploitation and utilization of S. alternifloral as a bio-energy source would have a promising prospect.

Key words: Soil temperature extremum, Plastic mulch, Bare soil, Cotton, Maize