杉木人工林片伐后萌芽更新试验

An experiment on the reformed sprouts after the stretch cutting of the artificial forest of China fir

对林龄２７年的杉木人工林实行片伐后进行萌芽更新与实生苗补植相结合的更新造林试验，采用全面清理林地、全垦细致整地、补植实生苗及松土除草与选留健壮萌芽等技术措施，４年后的生长情况结果表明，第４年萌芽更新幼苗平均高为２．９７ｍ，比杉木速丰林第４年平均高生长量指标增长０．４７ｍ，比第４年补植的实生苗平均高增长０．９４ｍ；与同年营造世行贷款杉木速丰林投入造林成本相比，每公顷可降低４４．３４％。这将为大规模开展杉木人工林基地片伐更新造林，具有一定的指导意义。

This experiment was carried out after the stretch cutting of artificialforest of China fir of 27 years old.The reforestation adopts the method ofreformed sprouts and seedling replant. After four years of clearing the forestland,careful preparatin of soil,seedling replanting, loosening soil and weeding, selectingof strong sprouts.the growing state changed greatly:the average height of thereformed sprouts is 2.97m,0.47m higher than the fast-growing forest and0. 94m higher than the replanted seedling.Compared with the cost of the afforestation of the fast-growing forest,whichis loaned by the World Bank, every hectare is reduced by 44.34%.So it isinstructive to the reforestation of the artificial forest in large-scale after thestretch cutting.