晚稻杨梅是舟山市定海区栽培面积最大、发展速度最快的特色水果，因其品质优良、生长健壮而被列为浙江省杨梅栽培“四大”品种之一。但长期以来，由于其栽培管理较为粗放，生产上普遍存在着大小年结果现象，且这种现象在舟山晚稻杨梅上越来越严重，因而导致产量不稳定，品质下 The late rice Yangmei is Dinghai District of Zhoushan City, the largest cultivated area, the fastest growing characteristic fruit, because of its good quality, robust growth and was classified as Zhejiang “bayberry cultivation” one of the “four” varieties. However, for a long time, due to its extensive cultivation and management, the phenomenon of size-year results is widespread in production, and this phenomenon is more and more serious in late blooming Yangmei of Zhoushan, resulting in unstable output and low quality