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掖单13号玉米杂交种是莱州市玉米研究所育成的一个紧凑大穗型品种,小面积种植超千公斤,创我国夏玉米单产最高纪录。本文根据兖州市农业局1989～1990年试验研究资料,在亩产700公斤以上的高产条件下,系统研究了其生长发育特点和高产栽培技术。一、掖单13号生长发育特点 1.穗分化进程从定株观察结果(表1)看出,掖单13号的穗分化进程,符合见展叶差规律和叶龄指数规律。突出特点是开花至成熟经历的时间长达51天,而一般中晚熟品
Yedang No. 13 maize hybrid is Laizhou Corn Institute bred a large breed, a small area of over 1000 kg of planting, creating the highest record of summer maize yield in our country. Based on the experimental data of Yanzhou Agricultural Bureau from 1989 to 1990, this paper systematically studied its growth and development characteristics and high-yielding cultivation techniques under high-yielding conditions of more than 700 kg per mu. First, the Yeda 13 growth and development characteristics 1. Spike differentiation process From the observation of the observed strain (Table 1) shows Yedan 13 spike differentiation process, in line with the law see the show leaf and leaf age index rule. Prominent feature is flowering to mature experience of up to 51 days, while the general late-maturing