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以大田挖根和挖坑用水冲根的方法研究了谷子根系生长发育规律，并以磷肥试验、地膜覆盖栽培、分用播种栽培等方法研究了环境条件对谷子根系生长发育的影响。结果表明：一株成熟的谷子有须根４０～８０条，６～８轮；谷子根系入土深达１５５ｃｍ，扩展直径为９０ｃｍ，主要分布在６０ｃｍ土层中，占总根量的９７．５１％；根系发生，拔节前较慢，拔节至抽穗发生快，抽穗后又慢，灌浆时停止发生；根系干物质积累遵循一元三次方程变化；增施磷肥，地膜覆盖，适期晚播能促进谷子根系生长发育，并提出了促进谷子根系生育措施。
The root growth and development of millet were studied by root digging and digging of water. The effect of environmental conditions on the growth and development of millet root system was studied by means of phosphate fertilizer experiment, plastic film mulching cultivation and seed-seeding cultivation. The results showed that one mature millet had 40 ~ 80 fibrous roots and 6 ~ 8 rounds. The roots of millet were deeply rooted at 155cm and the extension diameter was 90cm, which were mainly distributed in 60cm soil layer, accounting for 97.51% of the total. The root system occurred slowly before jointing, the jointing to heading occurred fast, the heading was slow, and the grouting stopped. The dry matter accumulation of root followed the equation of one cubic and three times. The increase of phosphate fertilizer, mulching and late sowing could promote the root system of millet Growth and development, and put forward to promote millet root fertility measures.