不同施肥水平对甘蔗新品种生长的影响

摘要

[ Objective] The research aimed to study the effects of different fertilization levels on new sugarcane variety .and GT 21 ,GT26,GT 27 and GT 28 were used for materials,which were bred by Guangxi Sugarcane Research Institute. [Method] The low,medium and high fertilization levels were carried out due to the present fertilizer level.and the split plot design was adopted in plant cane experiments. [ Result] Under the different fertilization levels, the difference of cane yield and sugar yield of GT21 wasn' I significant. The cane yield and sugar yield under low and medium fertilization levels of GT26 and GT27 were significant or extremely significant compared with high fertilization level. The cane yield of GT28 had no obvious difference, but the sugar yield in low level and medium level was significant higher than (hat under high fertilization level. The sucrose content of sugarcane was affected by different fertilization levels,and the sucrose contents under low and medium fertilization levels which were 0.42% and 0.22% higher that under high fertilization level. [ Conclusion] The fertilizer for sugarcane should be applied based on the local condition.%[目的]探讨广西甘蔗研究所近年育成的桂糖21、桂糖26、桂糖27和桂糖28等甘蔗新品种对不同施肥水平的效应.[方法]以当前施肥水平为基础,采用裂区区组田间设计,设置低、中、高3个施肥水平进行了1年新植试验.[结果]在不同施肥水平下,桂糖21甘蔗产量和含糖量差异不显著；在低肥区、中肥区桂糖26和桂糖27的甘蔗产量和含糖量在0.05或0.01水平显著高于高肥区；在不同施肥水平下,桂糖28甘蔗产量差异不显著,含糖量则是低肥区、中肥区在0.05水平显著高于高肥区.不同施肥水平对甘蔗蔗糖分也有一定影响,低肥区、中肥区蔗糖分分别比高肥区高0.42％和0.22％.[结论]在生产上,要因地制宜对甘蔗进行施肥.