立冬本龙眼结果母枝性状与开花结果的关系

通过两年的观测统计，分析了晚熟龙眼立冬本秋、冬梢不同抽生期及结果母枝生长状况对开花结果的影响；提出立冬本龙眼初结果树两个最佳放梢时期分别为８月中旬至９月上旬、１０月上旬至１０月下旬；优良结果母枝应选择粗度０．７０～１．０９ｃｍ的枝梢为宜；统计分析表明，结果母枝粗度与穗坐果数呈极显著正相关，而结果母枝长度、复叶数与穗坐果数的相关不显著，说明结果母枝的粗度对坐果的影响最大，是立冬本优良结果母枝的主要衡量指标；立冬本初结果树在１２月上旬之前抽发的枝梢仍可开发结果，但８月上旬、１２月上旬两个时期所抽枝梢的结果性能差，生产上应予疏除。

Relationship between bearing base shoot character with blossoming and bearing fruit of Lidongben longan

Effect of different branching stages and bearing base shoot character on blossom and fruit set of late longan variety Lidongben was analysed based on two years' statistical observation.The suitable shooting periods of Lidongben longan were the middle ten days of August to the first ten days of September and first ten days to last ten days of October.The branches with diameter 0.70-1.09 cm should be selected as superior bearing base branch.The diameter of bearing base shoot was positively correlated with the number of fruit per bunch while the correlation of length and compound leaves number with the number of fruit per bunch were not significant.It indicated the branch diameter effected fruit setting severely and it may serve as main reference index for bearing shoots.The Lidongben longan shoots emerged before the first ten days of December could blossom normally and bear fruits,but the shoots emerged in the first ten days of August and after December should be removed away because of poor ability to bear fruit.