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为广西甘蔗生产规模化、机械化、水利化、现代化生产方式提供更科学的技术支撑。对广西赤红壤区甘蔗滴灌施肥条件下氮磷钾的适合施用量进行了研究。结果表明:与常规施肥相比,滴灌施肥用量为常规施肥量的30%~50%时,蔗茎产量和各项农艺指标处在同等水平,显著高于对照,说明滴灌施肥可节约用肥50%~70%。采用常规施肥量30%的滴灌液肥既不会造成甘蔗产量的降低,更能体现较好的经济效益,对广西赤红壤区甘蔗规模生产实践具有重要参考意义。
Guangxi sugar cane for the production of large-scale, mechanization, water conservancy, modern production methods to provide more scientific and technical support. The suitable application rates of N, P, K under drip irrigation of sugarcane in hilly region of Guangxi were studied. The results showed that compared with conventional fertilization, the yield of drip irrigation was 30% ~ 50% of the conventional fertilization, the yield of cane and the agronomic indexes were all in the same level, which was significantly higher than that of the control, indicating that drip irrigation could save fertilizer 50 % ~ 70%. The use of conventional fertilization volume of 30% of drip irrigation liquid fertilizer will not reduce the yield of sugarcane, better reflect the better economic benefits, the scale of sugarcane production in hilly region of Guangxi has important reference significance.