龙眼疏花疏果的效应研究.pdf

龙眼疏花疏果的效应研究摘要本试验分为两个子试验:试验一以石硖龙眼树为试材,分疏果与不疏果两个处理;试验二以储良和桂明龙眼树为试材,分疏花、疏果、对照(不疏花不疏果)三个处理。试验主要研究疏花、疏果对龙眼着果率、产量、果实品质,翌年成花率、叶片矿质营养、有机营养的影响,结果表明: 。 、疏果不仅显著提高保果率,还显著地提高单株产量、单果重量、果肉的固形物含量、可食率和果实大小。 、疏果显著增加单个果穗重量,缩短果穗中心长度和果穗长度,,果实大小比较均匀,烂果病果减少,明显地改善果穗的外观品质,也明显提高了果实商品价值。 、疏果促使龙眼树形成数量较多的优良结果母枝枝组,提高翌年的成花率。 、疏果明显提高叶片的氮、磷、钾元素含量,并维持较高的水平,对叶片钙和镁的含量没有显著影响。 、疏果减少叶片蛋白质和淀粉营养物质的消耗,并使叶片蛋白质、淀粉的含量保持相对较高的水平,而对叶片可溶性糖含量的影响不大。关键词:龙眼疏花疏果产量品质矿质营养碳水化合物觚瓣≮ RESEARCH oN EFFECT oFFLOWER AND FRUIT TmNNING OF LONGAN TREE 内0 a玎ied锄in Shixia【Dng锄cIlltiv盯 was used弱plant material inmefi=瞎texperiment,therewerc饥it tllinniIlg and no Clluli柚g and Guiming Long袖cultivarS werc uscd鹪plant material with the treatments ofnower thinning,饥it thinning,and CK(no thinning offlower andfmit) in thesecond eXperiment. The objective ofpresent study was torcsearch theefIlectof flower and自uit mi衄ing 0nyield,fruit·set曲g rate,fmitqual吼nowering rateof nextye鸡卸d O曙anic and mineml nutritionill the 1eafofLongan results wefe mte. e蚯ciently enhanced female nowerrate andfmit—setting thiIlIliIlgiInpr0Ved如Jit—fetention rate,yield per打ce,sin醇e fnJitwei曲t,s01uble solidscontent,edibleponion柚d矗1lit size. II 3用0wef卸d fhlit thinning increased sin百e fmit panicle weight,shonened thelength of frujtpanicle and center axisoffmitpanic】e axis,aJld made fmit panide pact,few baJd bran iIlfmit pallide,made thesame size offmit,mofeoVer decrease fruit aresult, itimproved the900d-100killg of f11litpanicle,and italsoenhanced theeconomic valueoffmit. 。、)l,erand缸1itthillniIlgpromotcd theLong柚plaIlt top棚uce more branchgro叩s彻d胁h锄ced thenawe咖g sh00ts rateof next year. andfnJitthinllillgincreaScd theN,P andK∞ntent intheleafof L0ng觚pl如tsi韶ificanlly,and made N,P and K content athigh leycl after flower aIldfmitlhiIlninghad nots咖ificaIlt eIIfect on theCaandM