本文的目的是想表明,豆科复盖的成本可能会比保持其他较差的复盖的成本大多少。这里不讨论种植豆科复盖作物的许多优点,但应记住,豆科植物对胶树的好处,除了那些显而易兄的以外,例如缩短胶树的幼龄期以及减少肥料用量等,还应考虑其他比较不明显的好处,尤其是:(1)在原生皮内正在生长乳管的时候,胶树能够继续不断地生长,这必然会使胶乳产量有所增加;至少在割原生 The purpose of this article is to show that the cost of covering legumes may be much less than the cost of keeping other poor covers. The advantages of planting leguminous crops are not discussed here. However, it should be borne in mind that the benefits of leguminous plants to gum trees, except those that are readily apparent, such as shortening the young age of gum trees and reducing the amount of fertilizer, Other less obvious benefits should also be considered, notably: (1) gum trees can continue to grow while the ducts are growing inside the primary hide, which will inevitably lead to an increase in latex production; at least during cut primary