| 摘要 |
An agricultural growth control device (2) includes an organic, biodegradable, layer (6) and an impermeable sheet (4) affixed to the underside of the organic layer to form a unitary ground collar (8). The ground collar defines at least one hole (10) to allow growth of a plant (P) therethrough while suppressing the growth of weeds or grass around the plant. The impermeable sheet is preferably formed from a slurry of cellulosic fiber and water and the organic layer is preferably formed from a slurry of fiber, water and finely chopped organic material, such as straw, manure, leaves or almond wood chips. The fiber and chopped organic material provide a semi-rigid mulch cover for suppressing weeds around the plant. The mulch cover is easily positioned around the plant and, once it is so disposed, will be relatively impervious to severe weather, such as heavy rainfall and winds. The chopped organic material, particularly almond wood chips, enhance the appearance of the mulch cover.
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