脐晚脐橙落花落果规律的观察研究.pdf

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1、广西农业科学2010，41（10）：1104-1106GuangxiAgriculturalSciences脐晚脐橙落花落果规律的观察研究刘升球，区善汉，梅正敏，甘海峰（广西柑桔研究所，广西桂林５４１００４）摘要：２００８～２００９年在广西桂林对脐晚脐橙落花落果规律进行观察研究，为制定适宜的保花保果技术措施提供依据。结果表明，２００８年脐晚脐橙落花从４月上旬持续到４月下旬，４月１１～１２日和４月１６日各有１次落花高峰；第１次生理落果从４月下旬持续到５月下旬，５月２～４日和５月８～１０日各有１次落果高峰；第２次生理落果从

2、５月中旬持续到６月上旬，５月１１～１５日为落果高峰期。２００９年脐晚脐橙落花从３月下旬持续到４月下旬，３月２４日～４月８日为落花高峰期；第１次生理落果从４月下旬持续到５月下旬，４月２１日～５月１５日为落果高峰期；第２次生理落果从５月中旬持续到７月中旬，５月６～２４日为落果高峰期。两年的坐果率为０．５％～３．９％，脐黄落果率为５９．５％～７１．７％，裂果率为０．７％～２．３％。关键词：脐晚脐橙；落花落果中图分类号：S666.401文献标识码：A文章编号：１００２－８１６１（２０10）10－1104－０3Blossoman

3、dfruitdroppingruleofQiwannavelorangeＬＩＵＳｈｅｎｇ－ｑｉｕ，ＯＵＳｈａｎ－ｈａｎ，ＭＥＩＺｈｅｎｇ－ｍｉｎ，ＧＡＮＨａｉ－ｆｅｎｇ(GuangxiCitrusResearchInstitute,Guilin,Guangxi541004,China)Abstract:Inordertotakesuitabletechnologiesforblossom-keepingandfruit-keeping,anexperimenthasbeencon鄄ductedtoinvestigate

4、theruleofblossomandfruitdroppinginQiwannavelorangeduring2008-2009.Theresultsshowedthatin2008,theblossomdroppingbeganfromthefirstten-daytolateten-dayofAprilwithtwopeaksat11th-12thand16th.Thefirstphysiologicalfruitdroppingbeganfromlateten-dayofApriltolateten-dayof

5、Maywithtwopeaksat2th-4thMayand9th.Thesecondphysiologicalfruitdroppingbeganfrommidten-dayofMaytolateten-dayofJunewithpeakat11th-15thMay.In2009,theblossomdroppingbeganfromlateten-dayofMarchtolateten-dayofAprilwithpeakfrom24thMarchto8thApril.Thefirstphysiologicalfr

6、uitdroppingbeganfromlateten-dayofApriltolateten-dayofMaywithpeakfrom21thAprilto15thMay.Thesecondphysiologicalfruitdroppingbeganfrommidten-dayofMaytomidten-dayofJulywithpeakat6th-24thMay.Theaveragefruitsettingraterangedfrom0.5to3.9%andnavelyellowrateoforangerange

7、dfrom59.5to71.7%andfruitcrackingraterangedfrom0.7%to2.3%in2008-2009.Keywords:Qiwannavelorange;blossomandfruitdropping广西是脐橙主产区之一。为进一步优化脐橙品内进行，供试品种为２００６年春高接在１年生枳橙砧种结构，将目前单一的中熟品种调整为早中晚熟合红肉脐橙上的脐晚脐橙，株行距３ｍ×４ｍ，管理正常。理搭配，均衡上市，提高广西脐橙产业水平，２００５年１．２试验方法引进脐晚脐橙进行观察研究。掌握落花落果规律是

8、２００８年４月上旬～１２月下旬和２００９年３月下旬～９［１，2］制定保花保果技术措施的前提，不同品种的落月下旬，分别选择树势中庸一致的２株树进行调查，［3～8］花落果规律各不相同，落花落果还与肥水管理、每天调查落蕾、落花、第１次生理落果（带果梗）和第［9~12］２气温变化密切相关。为了弄清脐晚脐橙落花落次生理落果（不带果梗）数量，