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时间:2020-07-31
《论-果实负载量对黄瓜生长、产量及干物质生产和分配的影响.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、2015,28(5):17—20中国瓜菜试验研究:果实负载量对黄瓜生长、产量及干物质生产和分配的影响张红梅,金海军,丁小涛,余纪柱,郝婷(1.上海市设施园艺技术重点实验室·上海市农业科学院园艺研究所上海201403;2.南京农业大学园艺学院南京210095)摘要:以荷兰型短黄瓜为试材,在现代化温室栽培条件下,研究了不同果实负载对黄瓜植株生长、产量以及干物质生产和分配的影响。结果表明,每3节留2个瓜的处理和每5节留3个瓜的处理的植株高度、叶片数量和根、茎、叶干质量都明显大于对照(每节留1个瓜的处理),但果实干质量小于对照。每5节留
2、3个瓜处理的根、茎、叶干质量大于每3节留2个瓜的处理。从干物质分配率来看,对照的果实干物质分配率最多,为54.26%,每5节留3个瓜处理中果实干物质分配率最低,为42.95%。随着果实去除数量的增加,植株高度、叶片数量和叶面积也随之加大。果实的去除直接造成单株产量和单株结瓜数量下降,同时,畸形瓜比例也明显下降。因此,适当的去除果实可以增加植株的长势,虽然单株产量有所降低,但提高了商品瓜率。关键词:黄瓜;果实负载;生长;产量;干物质生产与分配Efectsofdiferentfruitloadongrowth,yieldanddry
3、matterproductionandpartitionofcucumberZHANGHongmei,JINHaijun,DINGXiaotao,YUJizhu,HA0Ting.(J.ShanghaiKeyLabofProtectedHorticulturalTechnology,HorticulturalResearchInstitute,ShanghaiAcademyofAgriculturalSciences,Shanghai201403,Shanghai,China;2.CollegeofHorticulture,Nan
4、jingAgriculturalUniversity,Nanjing210095,Jiangsu,China)Abstract:Theeffectsofdifferentfruitloadonthegrowth,synthesisanddistributionofdrymatterofcucumberplantsundertheconditionofmoderlqgreenhousecultivationwerestudied.Theresultsindicatedthattheplantheight,leafnumbers,l
5、eafar—ea,dryweightofroot,stemandleafinthetreatmentof2fruitspreservedamong3leafaxilsandthetreatmentof3fruitspre—servedamong5leafaxilswerehigherthanCK(thetreatmentof1fruitpreservedateachleafaxils),butthedryweightoffruitwaslowerthanCK.Thedryweightofroot.stemandleafinthe
6、treatmentof3fruitspreservedamong5leafaxilswashigherthanthoseinthetreatmentof2fruitspreservedamong3leafaxils.Accordingtothepartitionrateofdrymatter,thepartitionrateoffruitdrymatterwashighestinthe3treatments,whichreachedupto54.26%,thepartitionrateoffruitdrymatterinthet
7、reatmentof3fruitspreservedamong5leafaxilswasthelowest(42.95%).Themoreremovalfruits,thelargeroftheplantheight,leafnumberandleafareaofcucumber.Thefruitremovingdirectlycausedyieldandfruitnumberofperplantdecreas—ing,meanwhile,therateofabnormalfruitdecreasedobviously.Ther
8、efore,removingfruitproperlyreducedtheyieldofperplant,butitalsoenhancedtheplantgrowth,whichimprovedtherateofcommodityfruitintheprodu
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