Classification of Autumn-shoot and the Relationship between Autumn-shoot Type and Nutrition Content in Apple Tree
Pan Zengguang and Shu Huairui(Department of Horticulture,Shandong Agricultural University,Taian,271018)
Based on autumn-shoot appearance and the length of both spring and autumn shoot in various apple or-chards,the autumn-shoot were classified into three types:steady-types(long spring-shoot and short autumn-shoot),strong-type(long spring-shoot and long autumn-shoot)and weak-type(short spring-shoot and long au-tumn- shoot ).The formation of autumn- shoot type has a characteristic of regional formation. The nutrition-content was different in trees with different autumn- shoot types,predicting the nutrition content level in ap-ple trees. The steady- type of autumn shoot is an appropriate-type in apple trees.