資源描述：
《控釋氮肥對(duì)盆栽棉花產(chǎn)量及土壤養(yǎng)分狀況的影響》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、棉花學(xué)報(bào)CottonScience2015袁27淵5冤院401―407控釋氮肥對(duì)盆栽棉花產(chǎn)量及土壤養(yǎng)分狀況的影響*耿計(jì)彪袁張民袁李成亮袁鄭文魁袁田曉飛(土肥資源高效利用國家工程實(shí)驗(yàn)室/國家緩控釋肥工程技術(shù)研究中心/山東農(nóng)業(yè)大學(xué)資源與環(huán)境學(xué)院袁山東泰安271018)摘要院通過盆栽試驗(yàn)袁研究了硫加樹脂包膜尿素(PSCU)和樹脂包膜尿素(PCU)2種控釋氮肥及普通尿素對(duì)棉花產(chǎn)量及土壤養(yǎng)分變化的影響遙結(jié)果表明院控釋氮肥一次基施較等氮量普通尿素一次基施子棉產(chǎn)量顯著增加6.78%～28.91%袁但與等氮量尿素基施40%加追施60%處理產(chǎn)量差異不顯著遙基施控釋氮肥較尿素增加
2、了棉花鈴重袁但對(duì)衣分和單株成鈴數(shù)沒有顯著影響曰且顯著提高了盛花期和始絮期土壤中的硝態(tài)氮和銨態(tài)氮含量袁同時(shí)也顯著提高了初花期和盛花期土壤中的速效鉀含量袁但不同處理間有效磷含量差異不顯著遙因此袁在盆栽條件下袁控釋氮肥一次基施既可滿足棉花全生育期對(duì)氮素的需求袁又在保障產(chǎn)量的前提下減少了追肥次數(shù)遙關(guān)鍵詞院控釋氮肥曰普通尿素曰棉花曰產(chǎn)量曰土壤養(yǎng)分中圖分類號(hào)院S562院S158.3文獻(xiàn)標(biāo)志碼院A文章編號(hào)院1002-7807淵2015冤05-0401-0710.11963/issn.1002-7807.201505003*GengJibiao,ZhangMin,LiChen
3、gliang,ZhengWenkui,TianXiaofei(271018,)Atwo-yearpotexperimentwasconductedtocomparetheeffectsoftwocontrolled-releasenitrogenfertilizers(CRNF)includingpolymerandsulfur-coatedurea(PSCU)andpolymer-coatedurea(PCU),commonurea(U)andnonitrogen(N)treat-mentswiththesameamountsofphosphorus(P)a
4、ndpotassium(K)ontheyieldofcottonandchangesofsoilnutrients.There-sultsindicatedthatthecottonyieldinCRNFtreatmentswassignificantlyincreasedby6.78%-28.91%comparedwiththebasalureaapplicationtreatment,buttherewasnosignificantdifferencebetweentheCRNFtreatmentsandthetreatmentwithsplitureaf
5、ertilizationatpre-sowing(40%)andthefirstbloomstage(60%).Thebollweightwasincreasedby2.5%-11.32%withCRNFcomparedwiththebasalureaapplicationtreatment.However,thetypeofNfertilizerhadnoeffectonthelintpercentage,whichremainedat44.14%-46.67%,orbollnumbers.ThesoilNO－-NandNH+-Ncontentswerein
6、creasedintheCRNFtreatments34fromthepeakbloomstagetotheinitialboll-openingstagecomparedwiththebasalureaapplicationtreatment.ThesoilNO－-N3andNH+-Ncontentswereincreasedby20.98%-79.25%and12.51%-29.12%,respectively,inthepeakbloomstage,and50.31%-4171.24%and21.87%-40.57%intheinitialboll-op
7、eningstage.Atthesametime,theavailableKcontentinthesoilwasin-creasedwithCRNFfromthefirstbloomstagetothepeakbloomstagecomparedwithUtreatment.Thus,one-timeCRNFappli-cationnotonlymetthedemandforNoverthewholegrowthperiodofpottedcotton,butalsopreservedtheyieldanddecreasedthelaborcostoffer
8、tilizerdressing.con
