高州县长坡区高林乡塘尾村群众,1977年在油茶林内间种春砂仁10亩,投产后平均亩产砂仁50多公斤鲜果,最高年份亩产80公斤鲜果;茶油产量比未种前,平均亩产增加10％,获得油茶,砂仁双丰收。现在,全县在油茶林内间种砂仁三千多亩。高州油茶(Camellia vietnamensis)(又叫大果油茶),产量高、油质好,但由于坡地易水土流失,造成水肥不足,大小年显著。可是这种油茶有冠幅大,枝叶浓密,根系较深,枝下高(约2～2.5米),且落花落叶多的特点;而砂仁的生长需要适当荫蔽和水肥条件较好。二者结合种植后,林内地表二、三年便被覆益,降低地表径流,抑制杂草滋长,减少了水分蒸发。在培管砂仁的过程中,割下的枝叶和老苗、笋苗、 Gaozhou county slope Lin Gao Tang Village village, in 1977 in the Camellia oleifera forest Amomum villosum 10 acres, an average yield of more than 50 kg per acre yield fruit trees, the highest yield of 80 kg per year fresh fruit; tea production than non-seed Before the average yield increase of 10%, access to Camellia, Amomum double harvest. Now, the county grows more than 3,000 mu of linter in the tea tree. Camellia vietnamensis (also known as big-leaf tea) has high yield and good oil quality. However, due to the loss of soil and water from the slope, water and fertilizer are insufficient and the size of year and year is significant. However, this kind of Camellia has a large crown, dense foliage, deeper roots, branches high (about 2 to 2.5 meters), and falling flowers and more features; and the growth of Amomum need appropriate shade and better water and fertilizer conditions. After the combination of the two, the surface of the forest will be covered in two or three years, reducing surface runoff, inhibiting the growth of weeds and reducing the evaporation of water. In the process of training Amomum, cut off the branches and leaves, shoots,