杂交小麦品种绵杂麦168稀植高效栽培技术初探  

Preliminary Study on High-Economic Benefits Cultivation Measures with Low Plant Density of the Two-Line Hybrid Wheat Variety-Mian Za Mai 168

作　　者：周强[1] 李生荣[1] 陶军[1] 杜小英[1] 欧俊梅[1] 雷加容[1] 任勇[1] 庞启华[1] 

机构地区：[1]绵阳市农业科学研究所/国家小麦改良中心绵阳分中心,四川绵阳621023

出　　处：《中国农学通报》2009年第21期166-169,共4页Chinese Agricultural Science Bulletin

基　　金：国家863计划项目"强优势小麦杂交种的创制与应用(2009AA101102)";国家"十一五"支撑计划项目"西南优质高产冬小麦育种技术研究及新品种选育"(2006BAD01A02);四川省"十一五"育种攻关项目"杂交小麦育种研究"(2006YZGG-3);四川省农业厅重点资助项目

摘　　要：为解决杂交小麦生产用种量大,种子生产成本高这一难题,加速杂交小麦新品种在生产上的推广应用,采用两因素裂区设计,就施氮量与密度对绵杂麦168产量与效益的影响进行了研究。结果表明,施氮量、密度以及施氮量与密度的互作都极显著地影响绵杂麦168的产量。产量随着施氮量的增加呈增加趋势,在中高肥（施氮量为150－300kg/hm^2）水平下,可获得高于6750kg/hm^2的产量;产量随着密度的增加也呈增加趋势,但在密度极高的情况下,产量又有所下降。对经济效益的分析表明,在稀植（密度≤165×10^4基本苗/hm^2）与中高肥水平下,可获得高于8000元/hm^2的经济效益。总之,在基础地力中等水平的田块,在稀植（密度≤165×10^4基本苗/hm^2）与中高肥（施氮量为150-300kg/hm^2）水平下,种植绵杂麦168可获得高于6750kg/hm^2的产量和高于8000元/hm^2的经济效益。Two-factor split-plot design was used in this paper to study the effect of nitrogen application rate and plant density on the yield of the two-line hybrid wheat variety-Mian Za Mai 168. The results showed that, nitrogen application rate, plant density and their interaction influence the yield significantly. The yield increased both with the increase of nitrogen application rate and plant density, but declined in very high plant density. The yield above 6750 kg/hm^2 could be obtained if the nitrogen application rate were 150-300 kg/hm^2.The study of economic benefits showed that, in the low plant density, that is, basic seedlings lower than 165× 10^4 hm^2, economic benefits higher than 8 000 yuan/hm^2 could be obtained if the nitrogen application rate were 150-300 kg/hm^2.The conclusion was that, in the low plant density , planting Mian Za Mai 168 could obtain yield above 6750 kg/hm^2 and economic benefits higher than 8 000 yuan/hm^2 in the condition that the soil fertility were in the middle level and the nitrogen application rate were 150-300 kg/hm^2.

关 键 词：杂交小麦 绵杂麦168 稀植 产量 经济效益 

分 类 号：S512.1[农业科学—作物学]