墨江县是我省紫胶重点产区之一。一九七八年,这个县曾创造了年产原胶一百七十多万斤的历史最高纪录,占当年全省年产量的近三分之一。一九七九年比一九七八年原胶产量虽有下降,但原胶年产量仍达一百五十三万斤。从一九八○年以来,紫胶生产开始逐年下降。到一九八二年,原胶年产量下降到十五万九千多斤,不少紫胶老产区胶种 Mojiang County is one of the key producing areas of Lac in our province. In 1978, the county had created a record high of more than 1.7 million kilograms of raw rubber annually, accounting for nearly one-third of the province’s annual output. Although the output of raw rubber decreased from 1979 to 1978, the annual output of raw rubber still reached 1.35 million kg. Since 1980, shellac production began to decline year by year. By 1982, the annual output of raw rubber has dropped to more than 159,000 kilos, and many shellac varieties in the old producing areas