以灌溉定额为参数的葡萄果实含糖量和果型指数的数学模型

在极端干旱条件下,以成龄无核白葡萄为研究材料,采用深层坑渗灌灌水技术,研究了不同灌溉定额对葡萄含糖量和果型指数的影响。结果表明:葡萄果粒的果型指数和含糖量服从正态分布规律;采用模糊聚类分析法将果型指数和含糖量分为6类,对各类取其平均值后发现二者之间存在很好的模糊关系;建立了以灌溉定额为参数的果型指数和含糖量模型,根据灌溉定额可明晰果型指数和含糖量的关系;初步探明了灌溉定额对葡萄含糖量和果型指数的影响规律。

Fuzzy model for grape sugar content and fruit shape index with irrigation quota as parameter

Using matured Thompson seedless grape under extreme drought conditions and deep pit infiltration irrigation technique, the effect of different irrigation quotas on grape sugar content and fruit shape index was determined. The results show that grape fruit shape index and sugar content follow a normal distribution curve. Fruit shape index and grape sugar content were divided into six groups by fuzzy cluster analysis method. After averaging, a good fuzzy relation was observed between grape fruit shape index and sugar content. A fuzzy model for the fruit shape index and sugar content with irrigation quota as parameter was established. From the model, the relationship between fruit shape index and sugar content as influenced by irrigation quota is distinct. This study further proves the impact of irrigation quota on fruit shape index and sugar content.