| 1. | In this paper , the techniques for perennial dongzao tree of not bearing fruits are introduced , such as fertilizer and water management , the technical methods of increasing fruit - bearing rate , winter pruning , and disease and pests control and so on 本文主要介绍多年不结果冬枣树的肥水管理、提高坐果率的技术措施、冬季修剪及病虫害防治技术。 |