高寒区旱地莜麦合理种植密度的研究

通过对旱地莜麦不同种植密度的试验,进一步研究了密度对莜麦主要农艺状、干物质积累、叶面积系数及产量构成因素的影响,确定出在中等肥力条件下,晋北高寒区旱地莜麦的适宜种植密度为:播量600—675万粒/hm2,基本苗400—500万株/hm2。在该密度范围之内,群体和个体生长良好,产量各构成因素间关系协调,合理密植是获得旱地莜麦高产、稳产的关键技术。

Study on Reasonable Naked Oats Density in Dry Lands of Highly Cold Areas

Through the experiment on different naked oats density in dry lands, the effect of density on main agricultural characters, dry material accumulation, leaf area factor and yield components was studied. In highly cold areas of Jinbei, if soil fertility is moderate, the reasonable naked oats density in dry lands is seeding 6 million to 6.75 million grain per hm2, or seedling 4 million to 5 million plants per hm2. Naked oats planted in reasonable density, both population and individual grown well and all yield components developed in line. So it was concluded that a reasonable naked oats density was a key technology for high and stable yield in dry lands.