豫南大别山区属油茶分布的北界,现有油茶林50多万亩,其中老残林12.5万亩,亩丰产油不过2-3kg。1984年起,在新县等地进行了萌发更新试验,更新前为老残林,亩丰产油1—1.5kg,采用火烧更新复壮法。先将油茶老残林全部齐地伐倒,并点火烧掉,挖出杂灌树蔸,全面垦复整地,并实行林粮间作。更新当年有95％的树蔸萌发壮苗,第5年平均树 South Dabie Mountains in southern Henan is a distribution of Camellia north of the existing oil Camellia forest more than 500,000 mu, of which 125,000 mu of old residual forest, acres of oil yield, but 2-3kg. Since 1984, germination and renewal experiments have been carried out in Xinxian County and other places. Before the update, there was an old residual forest with a yield of 1-1.5kg of mu of oil and a fire-burning renewal and rejuvenation method. First all the old Camellia oleifera felled, and ignition burned, dug up shrubs and shrubs, a comprehensive land reclamation, and the implementation of intercropping forest. Update that year 95% of tree shrews germinate seedlings, the fifth year average tree