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《黄河滩区植棉减量施用控释氮肥技术研究-论文.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、第48卷第3期河南农业大学学报V0I_48NO.32014年6月JournalofHenanAgriculturalUniversityJun.2014文章编号:1000—2340(2014)03—0275—05黄河滩区植棉减量施用控释氮肥技术研究马宗斌,严根土,刘桂珍。,朱伟,胡银庆,黄群,李伶俐(1.河南农业大学农学院,河南郑州450002;2.中国农业科学院棉花研究所棉花生物学国家重点实验室,河南安阳455000;3.河南省种子管理站,河南郑州450046;4.南阳市农业技术推广站,河南南阳473053)摘要:为
2、探讨在黄河滩区植棉减量施用控释氮肥的方法,以转基因抗虫杂交棉中棉所75为试验材料,设计了棉花基肥和花铃肥均减量(180kg·hm)施用控释氮肥,基肥施用普通尿素、花铃肥施用控释氮肥,基肥、花铃肥均施用普通尿素和控释氮肥的掺混肥,基肥和花铃肥均常量(225kg·hm)施用控释肥氮肥(CK)的试验,研究了减量施用控释氮肥对棉花生长发育及产量的影响.结果表明,与CK相比,基肥和追肥均使用普通尿素和控释氮肥的掺混肥能促进棉花生育,增加叶面积和营养器官、生殖器官的千质量,提高单株结铃数和铃重,子棉和皮棉产量分别增加5.33%和4
3、.33%;但将控释氮肥的使用量由225kg·hm降至l80kg·hm。时,子棉和皮棉产量分别减少7.34%和7.28%,子棉减产达显著水平.关键词:黄河滩地;棉花;控释氮肥减量;生长发育;产量中图分类号:S562文献标志码:AStudiesonthemethodofreducingamountofcontrolledreleasenitrogenfertilizerappliedtocottoncultivatedintheYellowRiverbottomlandMAZong.bin,YANGen—tu,LIUGui
4、-zhen,ZHUWei,HUYin—qing,HUANGQun,LILing—li‘(1.CollegeofAgronomy,HenanAgricuhuralUniversity,Zhengzhou450002,China;2.StateKeyLaboratoryofCottonBiology,InstituteofCottonResearch,ChineseAcademyofAgriculturalSciences,Anyang455000,China;3.SeedAdministrationStationofHe
5、nanProvince,Zhengzhou450046,China;4.NangyangCityAgriculturalTechnologyExtensionStation,Nanyang473053,China)Abstract:Toinvestigatetheeffectsofreducingamountofcontrolledreleasenitrogen(N)fertilizerongrowthandyieldofcottoncultivatedinYellowRiverbottomland,weconduct
6、edafieldexperimentu—singtransgenicBtCrylA+TIhybridcottoncuhivar,CCRI(ChinaCottonResearchInstitute)75withfourNfertilizerstreatments,includingreducingamount(180kg·hm)ofcontrolledreleaseNfertilizer(T1),ureaappliedasbasefertilizerandendoplasmcoatedureaastopdressingf
7、ertilizerinfloweringstage(T2),thesameamountofureaandendoplasmcoatedureamixedasbasefertilizerandtopdressingfertilizer(T3),traditionalamount(225kg·hm)ofcontrolledreleaseNfertilizer(T4,CK).TheresultsindicatedthatNappliedasT3couldimprovethegrowthanddevelopmentofcott
8、on,andincreasetheLAI,drymatteraccumulationofvegetativeorgansandreproductiveorgans,thenun—berandweightofboll,andanalysisofvarianceshowedandtheseedcottonyieldandlintyie
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