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【目的】分析不同节水灌溉技术在甘蔗上的应用效果,为广西甘蔗产业节约型发展提供参考。【方法】应用喷灌、微灌、滴灌3种节水灌溉技术对甘蔗开展对比试验,分析3种灌溉技术的灌溉效果及不同灌溉方式下甘蔗对养分与水分的利用率、甘蔗产量、含糖量和蔗渣纤维素含量。【结果】喷灌技术的有效灌溉面积达到100%,但甘蔗对氮、磷、钾和水的灌溉利用率最低,分别为42.33%、24.33%、41.37%和67.44%。微灌技术的有效灌溉面积为30%~50%,其甘蔗对氮、磷、钾和水的灌溉利用率分别为50.39%、29.41%、51.64%和89.24%。滴灌有效灌溉面积小于30%,但甘蔗对氮、磷、钾和水的灌溉利用率最高,分别为51.32%、30.21%、52.11%和90.01%。3种灌溉方式生产的甘蔗蔗糖分在15.94%~16.05%,而蔗渣纤维素含量在11.05%~11.17%。【结论】滴灌技术可最大化利用灌溉资源,而微灌技术在整体生产成本和灌溉效果方面更具竞争优势,两者均适宜在广西甘蔗生产上推广应用。
【Objective】 The purpose of this paper is to analyze the application effects of different water-saving irrigation techniques on sugarcane and provide a reference for the conservation-oriented development of sugar cane industry in Guangxi. 【Method】 Three kinds of water-saving irrigation techniques of sprinkler irrigation, micro-irrigation and drip irrigation were used to carry out comparative experiments on sugarcane to analyze the irrigation effects of three irrigation techniques and the utilization rate of sugarcane to nutrients and water, sugarcane yield and sugar content under different irrigation modes And bagasse cellulose content. 【Result】 The effective irrigated area of irrigation was 100%. However, the irrigation and utilization rates of sugarcane to nitrogen, phosphorus, potassium and water were the lowest, which were 42.33%, 24.33%, 41.37% and 67.44% respectively. The effective irrigation area of micro-irrigation was 30% -50%. The irrigation and utilization rates of nitrogen, phosphorus, potassium and water for sugarcane were 50.39%, 29.41%, 51.64% and 89.24% respectively. The effective irrigation area of drip irrigation is less than 30%, but the irrigation and utilization rate of sugarcane to nitrogen, phosphorus, potassium and water are the highest, accounting for 51.32%, 30.21%, 52.11% and 90.01% respectively. The sucrose content of sugarcane produced by three kinds of irrigation methods ranged from 15.94% to 16.05%, while the content of bagasse cellulose was from 11.05% to 11.17%. 【Conclusion】 Drip irrigation technology can maximize the use of irrigation resources, while micro-irrigation technology is more competitive in terms of overall production costs and irrigation effects, both of which are suitable for the promotion and application of sugarcane production in Guangxi.