The fifth part is the water hyacinth protection and the integrated utilization.

第五部分是水葫芦的防治及其综合利用。

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A water plant with a showy purple flower, the water Hyacinth, was a native of the Amazon Basin and is now seen as the most important nuisance aquatic plant worldwide.

一种开艳丽紫色花朵的水生植物，即水葫芦，本来生长于亚马逊河流域，现在却成为全世界最令人烦恼的水生植物。

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The water hyacinth damage is belonged to one example introducing outside species damage , this plant is already widespread and uncurbed , "green is called contaminating a crime culprit ".

水葫芦的危害属于引进外来物种危害的一例，这种植物已经泛滥成灾，被称为“绿色污染元凶”。

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Pushing back the greens a bit, I made room in the lower part of the arrangement for hits of the saturated blue of fragrant hyacinth and the lighter blue of the smaller grape hyacinth to reflect the tonal shifts in color of the sky and water in this idyllic scene.

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The Aswan high dam, for example, is often cited as a cautionary example, a quixotic construction that now reduces the mighty Nile to a dribble before it trickles to the sea, leaving behind an explosion of water hyacinth, outbreaks of bilharzia, polluted irrigation channels and a build-up of sediment inland that would otherwise compensate for coastal erosion from Egypt to Lebanon.

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Water hyacinth grows into a thick bed of waxy leaves and violet flowers that cover the surface of the lake.

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