It looks nice, but why are you modelling individual blades? The more common approach is to create clumps of grass, render them to a texture, and then populate the field. You can get very nice results with 4-6 triangles instead of the 520 with your current arrangement. See http://www.crydev.net/viewtopic.php?f=315&t=100319 for a very nice tutorial - you've already done the hard part!
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