荔枝秋梢管理: 重在培育健壮母枝
近日,广东省农业科学院果树研究所、荔枝广东省农业科学院汕尾分院和海丰县农业农村局联合举办“海丰县水果(荔枝)技术培训班”。秋梢海丰县农科所、管理重点品牌企业负责人、重培壮母枝赤坑镇、育健陶河镇等地的荔枝荔枝种植户70余人参加了培训。
本次培训班邀请了广东省农业科学院植物保护研究所副研究员王思威就荔枝安全生产进行授课,秋梢从杀菌剂和杀虫剂等残留检测到不同药剂的管理使用特点,详细介绍了优质荔枝果品用药问题。重培壮母枝
王思威指出,育健杀菌剂的主要作用方式分为三类即保护性、治疗性和内吸性,保护性杀菌剂在植物染病之前使用,如铜类制剂、酰胺类杀菌剂、咪鲜胺;治疗性杀菌剂在植物感病后使用,如甲氧基丙烯酸酯类、春雷霉素、多菌灵等;内吸性的可通过荔枝茎、叶吸收进入体内传导扩散,如三唑类、吗啉类、甲霜灵等。专家现场指导农户,针对不同初次使用的农药需按照说明先配置最低浓度,避免产生要害,配合发生的病虫害症状选择适用的农药剂型,提高农药的有效利用效率,减少农药残留,保障荔枝果品的安全。
针对目前荔枝秋梢培养及病虫害防控问题,广东省农业科学院植物保护研究所副研究员董易之针对目前秋冬季节枝梢病虫害的发生特点和特征,详细介绍了防治方法和预防措施。他提到,在秋梢培养中提到要注意土壤施肥和叶面追肥相结合,以氮肥为主,保障秋梢生长充足的养分;遇干旱季节,及时补水灌溉;结合“开心形”树形修剪,提升高光效,综合培育健壮结果母枝。防控、清园十分重要,董易之表示要做到提前预防,减少病虫源,保障秋梢质量。
通过两位专家深入浅出地讲解,培训会气氛活跃,参会人员表示,通过技术培训,进一步掌握了荔枝秋梢期的种植管理技术,提升了秋梢期病虫害绿色防控的水平。
会后,研究员蔡长河、博士史发超与荔枝种植大户一起来到深圳市创新盈科技有限公司海丰分公司荔枝种植基地,对荔枝秋梢管理技术和健壮结果母枝的关键技术进行讲解,同时针对农户荔枝种植中遇到的问题进行解答。
本次培训旨在推动海丰县荔枝产业的高质量发展,通过培训促进荔农之间的交流,以农科院科技力量为支撑,以院地合作为媒介,实现优势互补、共同发展。接下来,广东省农科院果树所将继续为海丰荔农提供技术服务与支撑,为海丰县荔枝产业发展提供新动能。
【来源】广东省农业科学院果树研究所
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