水密调控对小麦产量及经济效益的影响吴儒刚1,苏誉1,刘文海1,朱元刚2,张英霞3,范业泉1,张超1(1.德州市农业科学研究院,山东德州253015;2.德州学院生命科学学院,山东德州253023;3.临邑县恒源街道办事处,山东临邑251500)摘要以抗旱小麦新品种阳光18为试验材料,研究不同灌水次数和密度组合对小麦产量、产量构成因素及经济效益的影响,旨在丰富小麦新品种阳光18的高产高效栽培技术,为推广应用提供理论依据。结果表明,小麦产量随灌水次数的增加而增加。从群体动态来看,基本苗多的处理产量较高,但270万/hm2基本苗的处理略高于360万株/hm2基本苗的处理,表现最佳。从产量结果来看,W2T2组合(灌拔节水和灌浆水+270万株/hm2)产量最高,达到8811.60kg/hm2。从经济效益来看,W1T2组合(只灌拔节水+270万株/hm2)经济效益最高,达到6661.13元/hm2。因此,从国家粮食安全的角度来看建议采用春季灌拔节水和灌浆水,播种量以基本苗270万株/hm2为宜;从农业收入的经济效益角度来看,建议采用春季灌1次拔节水、基本苗播种量270万株/hm2。关键词水密调控;抗旱型小麦;籽粒产量;经济效益中图分类号S512.1文献标识码A文章编号0517-6611(2023)07-0018-04doi:10.3969/j.issn.0517-6611.2023.07.005开放科学(资源服务)标识码(OSID):EffectsofWaterDensityRegulationonGrainYieldandEconomicBenefitsofWheatWURu-gang,SUYu,LIUWen-haietal(DezhouAcademyofAgriculturalSciences,Dezhou,Shandong253015)AbstractInordertoenrichthehigh-yieldandhigh-efficiencycultivationtechniquerulesofthenewwheatvarietyYangguang18andprovidetheoreticalguidanceforitspopularizationandapplication,therelationshipbetweenthecombinationofdifferentirrigationfrequencyanddensityandwheatyield,threefactorsofyieldformationandeconomicbenefitwasstudiedbyusingthenewwheatvarietyYangguang18asexperimen-talmaterial.Theresultsshowedthatthemoreirrigationtimes,thehighertheyield.Theyieldof2700000plants/hm2basicseedlingswasgrea-terthanthoseofothertwotreatments.Andthepopulationdynamicsof2700000plants/hm2basicseedlingswasthebest.Intermsofdifferentwater-tightcombinations,theyieldofW2T2treatmentwasthehighest,reaching8811.60kg/hm2.One-timeirrigationand270000plants/hm2basicseedlings(W1T2)hadthehighesteconomic...