橡胶树割面死皮具有经济』二的重要性,因为它使胶树丧失产胶能力。死皮树比附近的胶树生长快,并争夺阳光和养分。通常在老胶林突出的死皮问题已在幼龄高产树上或采用强度割制的地区逐渐增多。 在小胶园里,胶树割胶频率太大或用双割线割胶,都易引起死皮。胶园抚管不好,不是根据胶树对养分的需要进行合理施肥,这些因素都导致死皮的发生率高。 最近对总面积1437公顷989个小胶园调查,因死皮停割的胶树为12—32％。如果包括割线局部死皮的胶树和早期死皮现又复割的胶树在内,其发生率更高。 Rubber tree cutting dead skin has the economic importance of the second, because it makes gum trees lose gum production capacity. Dead skin trees grow faster than nearby gum trees and compete for sunshine and nutrients. The problem of dead skin, which is usually prominent in old rubber plantations, has been gradually increasing in young and high-yield trees or areas harvested by intensive cutting. In a small plastic garden, plastic trees tapping too often or double cut line tapping, are easy to cause dead skin. Rubber plantation is not good, not based on the needs of the tree gum nutrient fertilization, these factors lead to a high incidence of dead skin. A recent survey of 989 small rubber gardens with a total area of ​​1,437 hectares resulted in 12-32% of gum trees cut off due to dead skin. It is even more prevalent if the gum tree, which includes the cut-off local dead skin, and the gum tree where the early dead skin is re-cut.