To achieve effective operation of litchi mechanized bloom thinning,a novel flexible thinning mechanism was developed.By implementing the experimental studies on different treatment methods,it was concluded that the speed and spacing of plastic string both had a significant influence on the thinning time and the rate of thinning flower.No significant differences were found in terms of the fruit-set quantity,fruit mass and fruit size.The thinning time was inversely and positive proportional to the rotational speed of plastic string and space separately,while the flower thinning rate was positive and inversely proportional to the rotational speed of plastic string and space separately.With different mechanical thinning treatments,the fruit mass and fruit size significantly increased along with fruit size and fruit shape index were relatively consistent compared to the control,which the fruit size difference was large.The mean fruit mass and fruit set quantity per cluster had a negative correlation.%为实现荔枝机械疏花的高效作业,设计了1种机械柔性疏花器.通过开展不同处理方式的试验研究,发现胶条转速和胶条间距对疏花时间、疏花率有显著影响,而对坐果数、单果质量以及果实大小没有影响.胶条转速越大、胶条间距越小,疏花时间越短,疏花率越高.不同机械疏花处理后的单果质量、果实大小均比对照显著增加,果实大小、果形指数比较一致,而对照的果实大小差异较大.平均果质量与单穗坐果数之间呈负相关.
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