影响龙眼开花结果的因素及增产措施

根据10多年龙眼生产和科研的实践，分别影响龙眼开花影响的因素，认为广西近年龙眼产量低的主要原因除了连年气候异常外，主要是果农对龙眼开花结实的生理生态知识了解不够，对龙眼生长发育对水肥需求的认识不足，提出通过合理放留结果母枝，回缩修剪座果少的投产树，加强管理和投入措施培育健壮结果母枝，通过沿树冠滴水线开环沟或沟沟施肥，旺盛树主干或分枝环割和化学药物（激素）控冬梢促花芽分化，利用叶面施肥，短截1／3主花穗，果园放蜂和病虫防治措施促进果实发育和提高座果率。

Factors Affecting Blossoming and Fruit Bearing and Measures for High Yielding in Longan

Based on over ten year's practice of longan's production and research, the reason of lower yield of longan in Guangxi recent years is thought that growers are lack of physiological and ecological knowledge about the water and fertilization supply that longan needs in growth and development stage, except for successive abnormal climate of these years. Suggestions for raising yield of longan are listed as follows: fostering fit fruit branches by keeping proper number of fruit branches, heavy pruning of less fruiting tree, strengthening management and investment; contolling winter shoots and promoting differentiation of flower buds by making ditches for fertilizer by or around tree crown,ring barking on main trunk or branches, and usage of chemicals(growth regulator);enhancing development of fruit and rate of fruit bearing by spraying leaf fertilizer,one third pruning of flower cluster, rearing bees in the orchard and control of diseases and pests.