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自山东省莱州市玉米研究所育出高产耐密植的玉米品种,并首次创造了夏玉米亩产超1000公斤的高产纪录以来。北方旱作玉米区的一些科研、管理、生产部门均逐渐认识到,选育、选用高产耐密植的玉米品种,取代高秆、大穗、稀植、叶平展型的品种,是改变目前玉米单产几年来一直没有较大突破,处于徘徊局面的重要措施之一。为此近年来,北方旱作区有关农业部门已开始选育、引入耐密型玉米品种,同时研究与品种相适应的高产栽培技术。本文就吉林省中部地区耐密型玉米品种联合
Since Laizhou Corn Research Institute of Shandong Province raised high-yielding and close-planting corn varieties, and for the first time created a yield of more than 1000 kilograms of summer maize per mu. Some scientific research, management and production departments in the northern dry corn area have come to realize that the selection and selection of high-yielding and close-planting corn varieties instead of high-stalk, big spike, thin planting and leaf-spreading varieties is to change the current corn yield Over the past few years there has been no major breakthrough in one of the important measures of wandering. For this reason, in recent years, relevant agricultural departments in the northern rainfed areas have started breeding and introducing high-density maize varieties, and at the same time, researching high-yielding cultivation techniques compatible with the varieties. In this paper, the middle part of Jilin Province resistant to dense corn varieties