播期和密度对扬麦25产量及产量构成因子的影响  

Influence of sowing time and density on the yield and yield components of Yangmai 25

作　　者：赵光杰 ZHAO Guangjie(Agricultural Technology Extension Comprehensive Service Station in Yinxian Town,Shouxian,Anhui Province,Shouxian 232200,China)

机构地区：[1]安徽省寿县隐贤镇农业技术推广综合服务站,安徽寿县232200

出　　处：《安徽农学通报》2024年第12期5-8,共4页Anhui Agricultural Science Bulletin

摘　　要：为探索小麦品种扬麦25在皖中地区推广种植的适宜播期及栽植密度,进一步完善扬麦25的高产栽培技术,本研究对扬麦25在不同播期、密度条件下的有效穗数、穗粒数、千粒重和产量等指标进行分析。结果表明,播期及密度均会影响扬麦25的产量结构;随着播期的延迟,扬麦25的有效穗数、穗粒数和千粒重均表现为先增加后降低的趋势,产量以11月2—9日播种处理较高;随着密度的增加,扬麦25的有效穗数逐渐增加,穗粒数先增加后降低,千粒重逐渐降低,以基本苗密度255万~270万/hm^(2)处理的产量较高。适合的播期、密度下扬麦25的产量构成因子协调,利于形成高产。试验结果为扬麦25在研究区及相似生态区位的高产栽培提供播期及密度参考。In order to explore the suitable sowing period and density conditions for the promotion and planting of Yangmai 25 in the central Anhui region,and to further improve the high-yield cultivation technology of Yangmai 25,this study analyzed the effective panicle number,grain number per panicle,thousand grain weight,and yield of Yangmai 25 under different sowing period and density conditions.The results indicated that both sowing time and density could affects the yield structure of Yangmai 25.With the delay of sowing time,the effective panicle number,grain number per panicle,and thousand grain weight of Yangmai 25 showed a trend of first increasing and then decreasing.The yield was higher in the sowing treatment from November 2nd to 9th.As the density increases,the effective number of ears of Yangmai 25 gradually increases,the number of grains per ear first increases and then decreases,and the thousand grain weight gradually decreases.The yield was higher when the basic seedling density was 2.55-2.70 million/hm^(2).Under suitable sowing date and density conditions,the yield components of Yangmai 25 were coordinated,which was beneficial for high yield.The experimental results provided sowing date and density affects for high-yield cultivation of Yangmai 25 in the study area and the similar ecological location.

关 键 词：播期 密度 扬麦25 穗数 小麦产量 高产栽培 

分 类 号：S512.1[农业科学—作物学]