摘要: 以前的板栗嫁接多采用一年生实生苗作砧木嫁接,作者尝试了一种用板栗芽苗嫁拉的新方法,取得了较好的效果.用板栗芽苗砧嫁接可缩短板栗嫁接苗培育周期,节约育苗的地和时间,成活率高达95%,成本低,效益高,技术实用.关键词:板栗 嫁接 苗作砧木嫁接 种子 枝条采集 ...
PURPOSE:To keep the length of photosensitive material after cut always accurate by increasing the speed of a reference roller pair or a carrying roller pair arranged next to a cutter on the downstream side in the direction of carrying the photosensitive material, and granting the reference roller ...