播期对超甜玉米合美玉产量和经济效益的影响

Effects of Sowing Time on Yield and Economic Benefit of Super Sweet Corn Hemeiyu

以超甜玉米合美玉为材料,研究播种期对玉米生长发育进程、产量和经济效益的影响。结果表明,从4月27日到7月24日,随着播期的延迟,玉米出苗时间缩短,更早进入拔节期;鲜穗田间最适采收期从4 d延长至9 d。7月24日和5月30播种的鲜穗产量比4月27日播种的分别增产15%和22%,鲜穗收益增加2倍和43%。综合可见,超甜玉米合美玉在安徽宿州地区适宜的播种期为6月初至7月下旬,此时期播种,田间采收期较长,玉米产量较高,并且能够减少农药施用次数,提高综合种植效益。

The effect of sowing date on growth and development process,yield and economic benefits of super sweet corn Hemeiyu was studied.The results showed that from April 27 to July 24,with the delay of sowing date,the emergence time of maize seedling was shortened and entered jointing stage earlier,and the optimum harvest time of fresh ears of corn was prolonged from 4 d to 9 d.The yield of fresh bracts sown on July 24 and May 30 increased by 15%and 22%respectively compared with those sown on April 27,and the income of fresh buds increased by 2 times and 43%,respectively.Therefore,it can be concluded that the suitable sowing time of the“Hemeiyu”is from early June to late July in Suzhou,Anhui province,during which the field harvest time is longer,the corn yield is higher,and it can reduce the times of pesticide application,and improve comprehensive planting efficiency.