果树大枝锯口咋护理？果树修剪留下较大的伤口，要用波美５－１０度石硫合剂；或用１－２％硫酸铜液和４０％福美砷可湿性粉剂（或用５０％的退菌特可湿性粉剂５０倍液）以及波尔多液、煤焦油等消毒，然后涂抹保护剂，以防止伤口干枯及腐烂。伤口保护剂有以下三种：１．固... Fruit tree big mouth sawing care? Orchard pruning leaving a larger wound, to use Baume 5-10 degrees stone sulfur mixture; or with 1-2% copper sulfate solution and 40% arsenic arsenic WP (or with 50% of the DBT wettable powder 50 times) and Bordeaux mixture, coal tar and other disinfection, and then apply protective agent to prevent the wound dry and decay. Wound protectants have the following three: 1. solid...