温室甜瓜果实糖酸积累模拟模型研究

通过不同类型温室春、秋茬甜瓜栽培,基于有效积温、日温差积与甜瓜果实蔗糖、柠檬酸间关系的回归分析,建立了甜瓜果实蔗糖、柠檬酸及糖酸比及有效积温与日温差积的模拟模型.结果表明,甜瓜果实蔗糖、柠檬酸及糖酸比均随有效积温与日温差累积的增加呈logistic曲线函数变化,但不同栽培茬口函数模型的常数项有差异,它与日温差累积呈线性关系.验证试验结果表明:该模型能较好地模拟甜瓜果实蔗糖、柠檬酸积累过程与糖酸比变化,可精确预测甜瓜果实的成熟特性,因而在确定甜瓜优质采收期中具有很好的应用价值.

Simulation Model on the Accumulation of Sucrose, Citrate with Temperature Accumulative of Melon Fruit under Protected Cultivation

Under different cultivation condition, the melon fruit nutrient quality simulation model depending accumulated temperature, accumulated daily temperature differences were studied and established. The model showed that the sucrose, citrate accumulation and sugar acid ratio had logistic function with effective accumulated temperature. The constant term of the function was driven by accumulative daily temperature difference, which showed a linear relation. Experiment test showed that the models were able to objectively simulate the changes of fruit sucrose, citrate accumulation and sugar acid ratio during the fruit development, which means that it had practical value for the accurate prevention harvest date of melon fruit in high quality.