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利用池栽网架法和根系双向切片法研究了玉米根系的生长动态及其在土层中的分布。结果表明,初生根和第1～4层次生根与地面呈小于45°的夹角伸长。随着根层数的提高,次生根与地面的夹角逐渐增大。根系干重的85％～90％分布于距植株20cm、深40cm的柱状土壤内。鲁三9号根系的水平分布较鲁原单4号分布集中。
The growth dynamics of corn root system and its distribution in soil were studied by means of pool planting grid method and root bi-directional slicing method. The results showed that the root growth and the first to the fourth root level and the ground was less than 45 ° angle between the elongation. With the increase of root number, the angle between secondary root and ground gradually increases. Root dry weight of 85% to 90% distributed in the plant 20cm, 40cm deep columnar soil. The root distribution of Lusan 9 was more concentrated than that of Lushan No.4.