Navelate脐橙的落花落果规律研究  

Study on the Law of Flower and Fruit Dropping of Citrus sinensis Osbeck cv. ′Navelate′

作　　者：刘升球 区善汉 梅正敏 甘海峰 张社南 

机构地区：[1]广西柑橘研究所,广西桂林541004

出　　处：《安徽农业科学》2010年第33期18701-18702,18781,共3页Journal of Anhui Agricultural Sciences

基　　金：广西科技攻关项目(桂科攻0632001-2G)

摘　　要：[目的]对Navelate脐橙（Citrus sinensisOsbeck cv.′Navelate′）的落花落果情况进行观察研究,为制定合适的保花保果措施提供依据。[方法]选择树势中庸一致的2株树,2008年从4月7日开始,2009年从3月24日开始,每天调查其落花落果数量,探讨其落花落果规律。[结果]2008年Navelate脐橙的落花从4月上旬开始,持续到4月下旬,2次落花的高峰期为4月12-14、16日。生理落果从4月下旬开始,持续到6月下旬,第1次生理落果从4月下旬持续到5月下旬,落果高峰为5月14、89日;第2次生理落果从5月中旬开始持续到6月下旬,落果的高峰期为5月16-20日。2009年Navelate脐橙的落花从3月下旬开始持续到4月下旬,2次落花高峰为3月28-31日和4月10-17日。落果从4月下旬开始,持续到6月中旬,第1次生理落果从4月下旬持续到5月下旬,落果高峰期为4月25-28日和5月5-10日;第2次生理落果从5月中旬开始,持续到6月中旬,落果高峰为5月10-18日。在2008、2009年,Navelate脐橙的坐果率为1.09%-2.30%,脐黄落果率为19.00%39.20%,裂果率为11.80%-14.80%。[结论]该研究弄清了Navelate脐橙的落花落果、脐黄和裂果规律,可为保花保果提供科学依据。[Objective] The status of flower and fruit dropping of Citrus sinensis Osbeck cv.′Navelate′ were observed and studied,to provide basis for drawing up the measures of preventing its flower and fruit dropping.[Method] The number of flower and fruit dropping of two Citrus sinensis Osbeck cv.′Navelate′ plants with the same growth and development status were investigated since April 7th,2008 and March 24th,2009,and discussed their laws.[Result] The results showed that in 2008,the flower dropping began from early April to late April with the peak times between April 12 to 14 and 16.The first physiological fruit dropping began from late April to late May with the peak times between May 1 to 4 and 8 to 9;The second physiological fruit dropping began from mid May to late Jnue with the peak time of May16 to 20.In 2009,the flower dropping began from late March to late April with the peak times between March 28 to 31 and April 10 to17.The first physiological fruit dropping began from late April to late May with the peak time between April 25 to 28 and May 5 to 10;The second physiological fruit dropping began from mid May to mid June with the peak time of May 10 to 18.It was found that fruit setting rate of Citrus sinensis Osbeck cv.′Navelate′ was 1.09%-2.30%,the navel yellow rate was 19.00-39.20% and the fruit cracking rate was 11.80%-14.80% in 2008-2009.[Conclusion] The study finds out the law of flower and fruit dropping of Citrus sinensis Osbeck cv.′Navelate′,can provide the scientific basis for drawing up the measures of preventing its flower and fruit dropping.

关 键 词：脐橙Navelate 落花落果 规律 

分 类 号：S666.4[农业科学—果树学]