【摘要】 互花米草（Spartinaallerniflora)是禾本科多年生高秆型草本植物，原产北美洲大西洋海岸，70年代末引人我国．本文在大量试验基础上，对互花米草在华南热带海滩的生长适应性、生物量和收获量及其在促淤造陆、改良土壤等方面作了较为详尽的论述，并对互花米草的抗污染作用和作为饲料、饵料等的经济作用也进行了定量分析，认为互花米草在华南热带海滩具有广阔的开发应用前景．更多还原

【Abstract】 Spartina alterniflora, a dominant and tall-stalk plant of Agrostidoideae, is originallydistributed in the resularly flooded intertidal zones along the Atlantic coast from Newfoundland tocentral Florida and Gulf coast. It was introduced to China in 1979.Spartina alterniflora can grow in a wide range of substrates from coarse sand in silty caly, butbest in silty beach between the elevations of 0. 5～1.5m. In South China tropical beach, it cangrow well but can not result. Under general conditions it Can be transplanted each season in SouthChina.Biomass of the two- year-old grassland is measured, and the results are as follows:biomass above the ground 1 337g (dw) /m2, that underground 1 135g (dw) /m2 and total2 472g (dw) /m2. Harvesting experiment shows that in South China tropical beach it is Possibleto harvest three tinies each year and produce total fresh grass 71 000 kg/hm2. a.A comparison between the silting effect of Spartina beach and that of the adjacent barrenflats shows that in one year the former is usually 200%～250% of the latter. And thephysicochemical properties of soil of Spartina beach is better than those of the natural beach.Moreover, Spartina alterniflora is useful to resist ocean Pollution, and can be used as feed forlivestock, poultry and fish.更多还原