关键词: 苹果, 植物病害, 生物防治

Abstract: The authors have analysed the epiphytic microorganisms in the breed organ of apple in the different ecological conditions. The results showed that the quantities and populations of the epiphytic microorganisms related to the ecological conditions. Among the quantities of the microbes, bacteria occupied the first place, and then fungi came the second. Actinomyces, being mainly reported in the cold and arid region, was a little. The microbial populations were different in the different ecological conditions. In the warm and humid one, the main groups were Bacillus, nitrogen-fixing bacteria, Coniothyrium, Phyllosticta, Penicillium, Streptomyces. In the cold and arid one, the main groups were Bacillus, nitrogen-fixing bacteria, Staphylococcus, Cellulomonas, Cladosporium, Phyllosticta, Coniothyrium, Streptomyces. After the sample treated with water in the heavy region of moldy-core of apple, the microbial quantities rapidly increased, the main groups were Bacillus, nitrogen-fixing bacteria, Plesiomonas, Staphylococcus, Cellulomonas, Cladosporium, Phyllosticta, Conitothyrium, Streptornyces.

Key words: APPLE, PLANTDISEASE, BIOTIC CONTROL