1988年——1989年我们对易发生抽条的3年生以上红富士和金矮生幼树,采用凡士林加熟猪油涂抹枝干,3年平均越冬抽条率仅1％。具体方法:(1) 涂油制备,凡士林、熟猪油各1份,放入锅中加热拌匀备用;(2) 涂抹时间,于幼树落叶后至土壤封冻前进 From 1988 to 1989, we used the Vaseline Plus lard oil to apply branches of red Fujin and gold dwarf saplings over 3 years of age. The average 3 year wintering rate was only 1%. Specific methods: (1) Preparation of oil, petrolatum, lard each 1, into the pot heating mix ready; (2) smear time, after the leaves of young trees to freeze the soil forward