Mat for wrapping root balls of trees, e.g. in nurseries, comprises two layers of vegetable fiber, e.g. coconut fiber, with layer of plant growth medium, e.g. humus, between
摘要
<p>The mat for wrapping the root balls of trees, e.g. in nurseries, comprises two layers of vegetable fiber with a layer of plant growth medium between. The vegetable fiber is e.g. coconut fiber and the substrate is e.g. humus.</p>
