河南农业科学Issue(9)：33-35,3.
播期对玉米新品种郑单538产量及相关性状的影响
Effects of Different Seeding Date on Yield and Related Characteristics of Corn Variety Zhengdan 538
摘要
Abstract
The field experiment with 7 kinds of seeding dates was carried out in 2012 to find the most suitable seeding date for new corn variety Zhengdan 538 .With the delay of sowing date ,the growth duration of Zhengdan 538 decreased ,and the rate of rough dwarf disease cut down .The days from seeding to emergence ,from emergence to tasseling and from tasseling to mature de-creased by 2 d ,2 d and 11 d ,respectively ,when it was sowed on June 5 ,compared to that sowed on May 21 ,and the rate of rough dwarf disease declined from 10 .15% to 2 .16% .The differences of ear length ,ear diameter and ear row number were not significant among different sowing dates , but the grain number per row reduced and the bald tip elongated with the delay of sowing date . The grain number per row was 12 .19% lower when sowed on June 5 than sowed on May 21 ,and the bald tip was 0 .02 cm longer .The highest yield came from the sowing date of June 5 ,reaching to 11 079 .6 kg/ha ,which was 8 .87% and 18 .91% higher than sowed on May 21 and June 20 ,re-spectively .Integrating all the factors of Zhengdan 538 ,its suitable sowing date should be between M ay 25 and June 10 ,the latest date being June 15 .关键词
玉米/郑单538/播期/产量Key words
corn/Zhengdan 538/seeding date/yield分类
农业科技引用本文复制引用
赵霞,丁勇,唐保军,赵发欣,杜东伟,李新泽,田慧鹏..播期对玉米新品种郑单538产量及相关性状的影响[J].河南农业科学,2013,(9):33-35,3.基金项目
河南省科技成果转化资金项目（122201110033）；河南省玉米产业技术体系建设专项 （）
