摘要
在龙陵县甘蔗主产区,以有机肥、磷钾肥作为底肥,氮肥作追肥:设不同时期、不同施氮量6个处理,探讨优化甘蔗追肥不同分配比例、施肥时期和施肥方法。试验结果表明:处理B(氮肥总量1/4分别作苗肥和壮尾肥,2/4作拔节肥)的甘蔗产量为109.02 t/hm2,比常规施肥(氮肥全部作拔节肥)的90.94 t/hm2增18.08 t/hm2,增幅19.88%;处理B的产糖量为13.55 t/hm2,比处理A的10.91 t/hm2增2.64 t/hm2,增幅24.2%。处理B增产增糖效果十分明显,值得推广应用。
The sugarcane fertilization experiment was conducted to test effect of applying organic, phosphate and potassium fertilizer as base fertilizer, the nitrogen fertilizer of 6 treatments as after manuring under different stages and application amount in comparison with the conventional fertilization in the Longling area. The results showed that： the treatment B （1/4 nitrogen fertilizer applied at seed bed and later growing stage, 2/4 nitrogen fertilizer applied at elongation stage） was superior to the others, the cane yield was up 109.02 t/ha, increased by 18.08 t/ha （19.88%）;sugar yield was 13.55 t/ha, increased by 2.64 t/ha （24.2%）, in comparison with the treatment A, conventional fertilization （all nitrogen fertilizer applied at elongation stage）. Therefore, the treatment B was very effective to increase cane yield and sugar yield.
出处
《中国糖料》
2014年第4期19-20,23,共3页
Sugar Crops of China
关键词
甘蔗
最佳施肥
追肥
产量
sugarcane
optimum fertilization
topdressing fertilizer
yield
