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为监测较大区域内甘蔗产量及含糖量的时间、空间变化情况,了解地区、环境及土壤成分与甘蔗含糖量的关系,为甘蔗栽培提供指导,以日本琉球群岛南大东岛甘蔗栽培区为对象,用NIR方法测定甘蔗含糖量及其他成分含量,采用GIS技术建立地块位置、甘蔗产量、含糖量及P、K含量和土壤K含量数据库。在此基础上,建立3个栽培年度甘蔗含糖量、单产与甘蔗汁P、K含量的空间分布图,发现甘蔗含糖量与降水量及种植区水环境密切相关。对甘蔗含糖量及P、K含量和土壤K含量的相关分析表明,甘蔗含糖量与甘蔗汁P含量呈正相关,而与甘蔗汁和土壤K含量均呈负相关。
In order to monitor the temporal and spatial variations of sugarcane yield and sugar content in a large area, and to understand the relationship between the composition of the region, the environment and soil and the sugar content of sugarcane, and to provide guidance for the sugarcane cultivation, the sugarcane cultivation area As the object, the content of sugars and other components in sugarcane were determined by NIR method. The GIS technology was used to establish the location of plots, sugarcane yield, sugar content and P, K content and soil K content database. On this basis, the spatial distribution maps of sugarcane sugar content, yield and P, K contents of sugar cane juice in three cultivation years were established. It was found that sugarcane sugar content was closely related to precipitation and water environment in planting area. The correlation analysis of sugarcane sugar content, P, K content and soil K content showed that sugarcane sugar content was positively correlated with sugarcane juice P content, but negatively correlated with sugarcane juice and soil K content.