“８４３”康复剂为２．１２％腐殖酸酮水剂，山西省阳泉化工厂生产，是防治果树腐烂病的理想药剂。１９９６年我们在农二师２３团林业工作站３支１１农１５１地果园做了应用试验。供试果园面积２ｈｍ２，供试树为苹果和梨（１９７４年定植），树势偏弱，腐烂病较重。主要用“ “843” rehabilitation agent is 2.12% humic acid ketone water agent, Shanxi Yangquan Chemical Factory production, is the ideal agent for the prevention and treatment of fruit tree rot disease. In 1996, we made application experiments in three orchards, 11 farms and 151 orchards, in the forestry workstations of the 23nd branch of the Agricultural Division. The test for the area of ​​2hm2 orchard, the test tree for apples and pears (1974 colonization), weak tree vigor, heavier rot disease. Mainly used "