播种期和种植密度对冠麦2号产量及其构成因素的影响  

Effects of Sowing Date and Planting Density on Yield and Its Components of Guanmai2

作　　者：贺建峰 陈志愿 邓跟望 盛奥莹 HE Jianfeng;CHEN Zhiyuan;DENG Genwang;SHENG Aoying(Zhumadian Agricultural Academy of Sciences,Zhumadian He'nan 463000,China;He'nan Huaguan Seed Industry Co.,Ltd,Zhoukou He'nan 477200,China)

机构地区：[1]驻马店市农业科学院,河南驻马店463000 [2]河南华冠种业有限公司,河南周口477200

出　　处：《耕作与栽培》2023年第5期46-48,共3页Tillage and Cultivation

基　　金：国家现代农业产业技术体系建设专项资金(CARS-03)。

摘　　要：为了解播种期和种植密度对冠麦2号产量及其构成因素的影响,本研究以冠麦2号为试验材料,采用裂区试验设计,设置3个播种期(10月8日、10月15日、10月22日)和4个种植密度(12万/667 m^(2)、17万/667 m^(2)、22万/667 m^(2)、27万/667 m^(2)),研究播种期和种植密度对冠麦2号产量及其构成因素的影响。结果表明,播种期对最高群体和有效穗数的影响达到显著水平,随着播种期的推迟,最高群体和穗数呈下降趋势,10月22日播种的最高群体和穗数分别比10月8日播种的平均降低435.28万/hm^(2)和94.94万穗/hm^(2);4个种植密度间的产量存在极显著差异,随着种植密度的增加产量呈显著上升趋势,种植密度为22万株/667 m^(2)的产量最高,分别比12万株/667 m^(2)、17万株/667 m^(2)、27万株/667 m^(2)增产20.63%,13.71%和6.99%;该品种的适宜播种期应该在10月15日左右,选择22万株/667 m^(2)基本苗的种植密度较为适宜。In order to understand the effect of sowing date and planting density on the yield and its components of Guanmai2,this study took Guanmai2 as the experimental material,adopted the split area.Design of experiments,set three sowing dates(October 8,October 15,October 22)and four planting densities(120000/667 m ^(2),170000/667 m^(2),220000/667 m^(2),270000/667 m^(2)),and studied the effect of sowing date and planting density on the yield and its components of Guanmai2.The results showed that the influence of sowing date on the highest population and effective panicle number reached a significant level.As the sowing date was postponed,the highest population and panicle number showed a downward trend.The highest population and panicle number sown on October 22 decreased by 4.3528 million/hm^(2) and 94949400 panicles/hm ^(2),respectively,compared to the average sown on October 8.There were extremely significant differences in yield among the four planting densities,and with the increase of planting density,the yield showed a significant upward trend.The yield was the highest at a planting density of 220000 plants/667 m^(2),which was 20.63%,13.71%,and 6.99%higher than 120000 plants/667 m^(2),170000 plants/667 m^(2),and 270000 plants/667 m^(2),respectively.The suitable sowing date for this variety should be around October 15th,and the planting density of 220000 plants/667 m^(2) basic seedlings was more suitable.

关 键 词：小麦 冠麦2号 播种期 种植密度 产量 

分 类 号：S512.1[农业科学—作物学]