| 刘升球,贺申魁,肖远辉,区善汉,罗世杏.桂柚1号落花落果规律的观察研究[J].中国南方果树,2015,44(1): |
| 桂柚1号落花落果规律的观察研究 |
| Observation on flower and fruit dropping rule of Guiyou No.1 pomelo |
| 投稿时间：2014-07-31 修订日期：2014-09-03 |
| DOI： |
| 中文关键词: 桂柚1号 生理落果 坐果率 |
| 英文关键词:Guiyou No.1 pomelo Physiological fruit drop Fruit setting rate. |
| 基金项目:国家科技部农业科技成果转化项目(2011GB2E100006)；广西科技成果转化项目(桂科转1123013—8)；国家现代农业产业技术体系广西柑橘创新团队建设专项项目，广西科技成果推广与产业化示范项目（桂科转1346003-11）。 |
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| 中文摘要: |
| [目的] 为掌握落花落果规律，制定合理的保花保果措施，2012～2013年，对桂柚1号的落花落果进行了观察研究。 [方法] 选择树势中庸一致的3株树,树下铺设防虫网, 每天统计落蕾落花落果数量,绘制出落花落果曲线图。[结果]2012年落蕾从4月上旬持续到4月下旬，高峰期为4月17日和18日；落花由4月中旬持续到5月上旬，高峰期为4月22～30日，生理落果从4月下旬开始，持续到6月下旬。第一次生理落果从4月下旬持续到5月下旬，其中5月2日和5月7日有两次落果高峰期，第二次生理落果由5月上旬持续到6月下旬，5月2～4日及5月8～12日有两次落果高峰期；2013年，落蕾落花从3月下旬开始，持续到4月中旬，其中落蕾从3月下旬持续到4月中旬，高峰期3月28日～4月6日，落花从3月下旬持续到4月中旬，高峰期3月30日～4月7日，生理落果从4月上旬开始，持续到6月上旬，第一次生理落果从4月上旬持续到5月中旬，其中4月4～6日为落果高峰期，第二次生理落果由4月中旬持续到6月中旬，4月19日～5月5日为落果高峰期。2012、2013年桂柚1号的坐果率分别为2.9%和1.7%。[结论] 桂柚1号的生理落果开始与持续时间因年份而异，大致从3月下旬、4月上旬开始，6月中下旬结束，持续近3个月，落蕾落花占43.4～49.5%，落果占50.5～56.6%，坐果率1.7～2.9%。 |
| 英文摘要: |
| An experiment has been conducted to elucidate the physiological mechanism of flower and fruit dropping in Guiyou No.1 pomelo in 2012～2013. [Methods] Three medium vigorous trees ,under which insect-proof nets were layed, were chosen to statistic the number of daily bud dop, flower drop and fruit drop and draw the corresponding graphs.[consequence]The results showed that in 2012,The flower bud dropping began from early April to late April with the peak times between 17-18th April . the flower dropping began from Mid April to early May with the peak times between 22-30th April, .the first physiological fruit dropping began from late April to late May with the peak time between 2th May and 5th May , The second physiological fruit dropping The flower bud dropping began from early April to late April with the peak times between 17-18th April . In 2013，the flower bud dropping began from late March to mid April with the peak times between 28th March ～6th April, the flower dropping began from late March to mid April with the peak times between 28th March ～7th April.the first physiological fruit dropping began from early April to mid May with the peak time between 4-6th May , The second physiological fruit dropping began from mid April to mid June with the peak time of 19th April～ 5th May. It was found that fruit setting rate was 2.9% in 2012 and fruit setting rate was 1.7% in 2013. [Conclusion] Physiological flower and fruit drop of Guiyou No.1 pomelo differences between the start and duration for the year, roughly starting in late march and early April, ending in mid to late June, lasts for nearly three months, flower and bud drop of 43.4 ~ 49.5%, fruit drop of 50.5 ~ 56.6%, fruit rate of 1.7 ~ 2.9%. |
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