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种植密度是影响玉米产量的重要因素,适宜的种植密度是玉米高产的关键。我们选用肃研480和郑单958两个品种进行夏玉米不同种植密度的试验,试验结果显示随着种植密度的增加夏玉米产量增加,超过6万~8万株/hm~2产量开始下降,两个品种有所区别。1试验地点试验地点在河北省藁城市邱头镇堤上村东河北省农林科学院粮油作物研究所堤上试验站院内,试验地土壤为壤质褐土。
Planting density is an important factor affecting the yield of corn. Suitable planting density is the key to high yield of corn. The results showed that with the increase of planting density, the yield of summer maize increased and the output of more than 60,000 ~ 80,000 plants / hm ~ 2 began to decline with the increase of planting density. Differences between the two varieties. 1 Test sites The test sites were located in the embankment test station of the Institute of Cereals, Oils and Crops, East Hebei Academy of Agriculture and Forestry, Qiu Toucun, Qiu Tou Town, Gaocheng City, Hebei Province. The test soil was loamy brown soil.