北京市延庆区适宜籽粒直收的春玉米品种筛选

Screening of Spring Maize Varieties Suitable for Grain Straight Harvest in Yanqing District of Beijing City

根据北京市延庆区的特点,开展适宜籽粒直收的春玉米品种筛选试验,检测机械收粒作业质量、不同品种生育期、收获期籽粒含水率、各品种倒伏率、空秆率和产量等指标,综合筛选延庆区适宜籽粒直收的玉米品种。结果表明:结合产量和机械收粒作业质量综合评价,郑单958成熟期晚,产量最高,长势良好,适宜晚收,可实现机械收粒作业;MC703成熟期早,产量较高,虽然空秆率较高,但可通过栽培措施调控,降低空秆率,适宜中晚收,可实现机械收粒作业。

According to characteristics of Yanqing district of Beijing,screening test of spring maize varieties suitable for grain harvested directly was carried out. Indexes such as working quality of mechanical harvest grain,growth period of different varieties,grain moisture content of harvest stage,lodging rate,empty bar rate and yield of each type,were tested. Corn varieties suitable for straight harvest of Yanqing area were comprehensively screened. Results showed that,combined with comprehensive evaluation of production and working quality of mechanical harvest grain,Zhengdan 958 had early maturity,highest yield,and well growth. It was suitable for late harvest,and could realize mechanical harvest homework. MC703 had early maturity and high yield. Although empty stalk rate of MC703 was higher,but it could be regulated and controlled through cultivation measures to decrease empty stalk rate. It was suitable for middle-late harvest,and could realize mechanical harvest homework.