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通过对吉林省目前市场上销售的8个玉米品种,在5个种植密度下,即每公顷3.0万株、4.5万株、6.0万株、7.5万株、9.0万株,研究种植密度对玉米商品品质的影响。结果表明,随种植密度增加容重变化因品种而异,在稀植3.0万株/hm2条件下,子粒容重较高密度条件下有降低趋势;种植密度增加子粒体积缩小,不同品种子粒体积随密度增加而减小的程度不同;随种植密度增加,子粒充实度降低(吉单79),个别品种子粒充实度反而有增大的趋势(吉单27),随密度增加子粒充实度变化情况因品种而异。
The effects of planting densities on the maize commodity were studied on 8 maize varieties currently on the market in Jilin Province at 5 planting densities, that is, 30,000, 45,000, 60,000, 75,000 and 90,000 plants per hectare. Quality impact. The results showed that with the increase of planting density, the change of bulk density varied with the varieties. Under the condition of 30 000 plants / hm2 thinning, the bulk density of the grains tended to decrease under the higher density conditions. The grain density of the different varieties decreased with increasing planting density, (Jidan 79). However, the grain filling degree of some varieties increased instead of increasing (Ji Dan 27). The variation of grain filling degree with increasing density was affected by the varieties different.