梨黑斑病(Alternaria kikuchiana Tana-ka)是梨树的重要病害之一.近年在我省盐城地区亦有发生,以危害日本梨为主,中国梨的茌梨、鸭梨、胎黄梨的叶片也有少量受害.梨树受害后,提早落叶,削弱树势,病果龟裂,早期脱落,严重地影响梨树的生长和结果.1976～1979年对本病的发生规律及其防治进行了初步研究. Alternaria kikuchiana Tana-ka (Alternaria kikuchiana Tana-ka) is one of the most important diseases of pear tree. In recent years, it has also occurred in the Yancheng area of ​​our province to endanger Japanese pear. Pear, pear and pear The leaves also have a small amount of damage.Pear tree victims, early deciduous, weaken the tree potential, fruit cracking, early fall, seriously affecting the growth and results of pear tree .1976 ~ 1979 the occurrence of the disease and its prevention initial research.