兰花毛蔓豆(Calopogonium Caer-uleum)是一种豆科攀缘植物,原产菲律宾。马来西亚从60种豆科植物的适应性试验中,证实了兰花毛蔓豆比其它品种耐荫蔽,且富含多种养分,尤以氮素为最。认为建立该种覆盖作物的胶园在头15年内可能无需施氮肥或施少量氮肥。对胶树生长的影响不甚明显,但对产量提高的作用却是令人鼓舞的。据印尼报导,种植兰花毛蔓豆的胶园比仅采取除净杂草的方法增产 Calopogonium Caer-uleum is a legume-climbing plant native to the Philippines. Malaysia from 60 kinds of legumes adaptability test, confirmed that Orchidaceae than other varieties shade shade, and rich in a variety of nutrients, especially nitrogen is the most. It is considered that there may be no need to apply nitrogen fertilizers or to apply a small amount of nitrogen fertilizer in the rubber plantations in which such cover crops are established in the first 15 years. The effect on gum tree growth is less pronounced, but the effect on yield enhancement is encouraging. According to reports from Indonesia, the rubber plantations that grow orchid mahogany beans have only increased yields by removing weeds