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本研究以湘北蔗区常规甘蔗品种NCo310为材料，在1998年进行甘蔗蔗种茎粗对大田生产的影响试验，观察了甘蔗的出苗率、有效茎数、株高、茎粗、单茎重、产量等农艺性状，结果表明蔗种茎粗对大田生产有显著影响，当蔗种茎粗小于1．7cm时，甘蔗大田生产产量显著减少，本研究表明甘蔗中小茎品种如NCo310等只有当播种行距在0．5。～0．6m时，才能获得较多茎粗大于1．7cm的甘蔗种芽．通过1996～1998年三年研究表明，在北缘蔗区建立甘蔗专用留种田栽培制度是切实可行的，但要适当的控制行距和密度．采用甘蔗专用留种田栽培技术，可以明显地提高北缘蔗区的甘蔗生产水平。
In this study, the common sugarcane variety NCo310 in sugarcane field of northern Hunan was used as experimental material to study the effect of sugarcane cane stem diameter on the field production in 1998. The effects of emergence rate, effective stem number, plant height, stem diameter, Yield and other agronomic traits. The results showed that the stem diameter of sugarcane had a significant impact on the field production. When the stem diameter of sugarcane was less than 1.7cm, the yield of sugarcane field decreased significantly. The results showed that the small and medium stems such as NCo310, At 0.5. ~ 0.6m, in order to get more stem diameter greater than 1.7cm sugarcane seedlings. Through 1996 to 1998 three years of research shows that sugar cane farming in the northern sugarcane-based farming system is feasible, but to properly control the row spacing and density. The use of sugar cane to stay for farming techniques, can significantly improve the northern sugarcane sugarcane production.