自制果树伤口保护剂果树冬季修剪时，常在枝干上留下较大的伤口，为避免伤口感染病害，有利于愈合，必须涂抹保护剂。常用自制果树伤口保护剂有：１．牛粪灰浆。用新鲜牛粪１６份、熟石灰和草木灰各８份，细河沙１份，加水调制成浆糊状使用。２．固体接蜡。用松香４份，蜂... Homemade fruit tree wound protectant Fruit tree pruning in winter, often leaving a larger wound on the branches, in order to avoid wound infection disease, is conducive to healing, you must apply protective agent. Homemade fruit tree wound protectants are: 1. Cow dung mortar. With fresh cow dung 16 parts, 8 parts of slaked lime and ash, fine sand 1, add water to prepare a paste used. 2. Solid wax. 4 parts with rosin, bee ...