糖蜜酒精发酵液对甘蔗生长的效应

Effect of vinasse application on sugarcane growth and yield

【目的】探讨糖蜜酒精发酵液蔗田施用对甘蔗生长的影响,为甘蔗增产增糖、消除糖蜜酒精发酵液对环境的污染及发展蔗糖业循环经济提供参考,并为在试验地蔗区推广酒精发酵液定量还田技术提供试验依据。【方法】把糖蜜酒精发酵液作为液肥与常规施肥作比较试验,糖蜜酒精发酵液施用量为120t/ha,锤度为7.0~7.5。试验期间调查不同处理甘蔗的农艺性状及生理指标的变化。【结果】与常规施肥（CK）相比,喷施糖蜜酒精发酵液提高了甘蔗出苗率、分蘖率、叶绿素和田间锤度,甘蔗株高、茎径、有效茎数也有一定的提高,产量比对照增加30.2%。【结论】喷施糖蜜酒精发酵液对甘蔗生长具有明显的促进作用,有利于增产增糖。

[Objective]The present study was conducted to find out the effects of vinasse application on sugarcane growth in order to increase cane and sugar yield, eliminate environmental pollution, and to develop technology for recycling sugar industry wastes and extend the quantitative field-returning technique for vinasse in sugarcane production areas. [Method]A comparative test on vinasse and conventional fertilizer （CK） application was conducted using sugarcane variety ROC 22. The vinasse （120 t/ha; 7.0-7.5 Brix） was applied in sugarcane fields at 7-10 days after planting. Agronomic traits and physiological indices of sugarcane plants were determined. [Result]Compared with conventional fertilizer treatment （CK）, the vinasse treatment increased cane yield by 30.2% and showed significant improvement in seedling emergence rate, tillering rate, plant height, stalk diameter, millable canes, total chlorophyll and field brix. [Conclusion]The experimental results revealed that application of suitable concentration of vinasse considerably enhanced the growth of sugarcane, and significantly improved cane yield and sucrose content.