不同播期对夏播高粱生育期及产量的影响  

Effects of different sowing dates on the growth stages and yield of summer sorghum

作　　者：杨琳[1] 崔福柱[1] 段永红[1] 郭秀卿[1] 薛建福[1] 崔江辉[1] 孙隆祥[1] 

机构地区：[1]山西农业大学农学院,山西太谷030801

出　　处：《山西农业大学学报（自然科学版）》2017年第1期7-10,27,共5页Journal of Shanxi Agricultural University(Natural Science Edition)

基　　金：国家公益性行业(农业)科研专项(201503121-07);山西省科技攻关项目(20140311003-4);国家科技成果转化项目(2014GB2A300013)

摘　　要：[目的]研究不同播期对夏播高粱生育期及产量的影响。[方法]以"晋杂30号"夏播高粱为供试材料,采用5个播期的随机区组设计,研究不同播期对夏播高粱生育时期及产量表现。[结果]随着播期的推迟,夏播高粱的生育进程延迟,生育期延长,播期每推迟1d,生育期延长0.48d。穗数、穗粒数减少,千粒重下降,产量呈下降趋势,下降幅度8.3%~21.3%。通过相关分析得出,有效积温与产量呈极显著正相关、日均温与产量呈显著性正相关、降水量与产量呈正相关。[结论]"晋杂30号"夏播高粱在晋中地区适宜播期为6月15日—6月30日。[Objective]In order to research the effects of different sowing dates on the growth stages and yield of summer sorghum. [Methods]Using 5 sowing dates of randomized block design of summer sorghum hybrid Jinza 30, the effects of different sowing dates on growth stages, yield of summer sorghum were studied. [Results]With the delay of sowing date, the growth process was postponed, the growing period was lengthened. Sowing date postponed for 1 days, the growth period extended to 0. 48 days panicles, grains per spike and 1000-grain weight decreased as well. Yield de- creased 8. 3% to 21.3% under the condition of later sowing. By correlation analysis, accumulated temperature ap- peared highly significant correlation with yield, mean daily temperature appeared significant correlation with yield, the relationship between precipitation and yield were positively correlated. [Conclusion]The suitable sowing period for summer sorghum Jinza 30 was from June 15th to June 30th in the region of Jinzhong.

关 键 词：播期 晋杂30号 生育期 产量 

分 类 号：S514[农业科学—作物学]