北方葡萄防寒可用新办法马万芳以前北方，因冬季寒冷，抗寒嫁接的葡萄冬季人工防寒，大都采用埋土加防寒物的办法，既费工费力又不经济。现可采用树叶加草帘，不用埋土的新防寒法。笔者用这种方法通过小范围的沟栽双行的密植探索试验，葡萄安全越冬无冻害。具体做法介绍如... North grapes cold available new approach Ma Wanfang In the past the north, due to the winter cold, cold Grape winter grafting cold, mostly using the method of embedding soil and prevent cold, both laborious and uneconomical. Can now use the leaves plus straw, do not buried the new cold method. I use this method through a small range of double-row ditches to explore the close planting, grape-free winter without frost damage. Specific practices introduced as ...