延后栽培设施葡萄水生产力及水分生产函数研究

针对不同水分处理梯度，对河西地区延后栽培设施葡萄的不同生育期土壤水分变化、耗水特性、水生产力和水分生产函数等进行了研究。结果表明：萌芽期适度亏水尧其余生育期充分供水是延后栽培葡萄产量和水分利用效率最优的调亏模式。采用经典的最小二乘法对延后栽培设施葡萄的水分生产函数进行拟合，通过对两种模型的比较，探索适用于河西地区延后栽培设施葡萄的水分生产函数模型，验证了Blank模型在河西地区延后栽培设施葡萄中是合理有效的，且水分敏感系数按照浆果膨大期、抽蔓期、着色成熟期、开花期以及萌芽期的顺序依次递减，葡萄的耗水规律与水分敏感系数的变化规律基本吻合。

Study on greenhouse grapes under delayed cultivation water productivity by using water productivity function model

This research was performed to study the delaying cultivation facilities, variation of soil water content, water consumption characteristics, water productivity and water production function in grapes during different growth stages under various water treatments. The results showed that moderate water deficit during germination period while full water supply in other periods was one of the optimal deficit patterns for yield and water use efficiency in grapes under delayed cultivation. We fitted water productivity function model in grapes by providing the facility of delayed cultivation through the least squares method to analyze and compare the two water productivity function models for delayed grape cultivation facilities, as the experiment was performed in Hexi area. From this study it has observed that blank model was more reasonable and effective for delayed grape cultivation facilities, and the water sensitive coefficient decreased during fruit enlargement period, vining period, ripening period, blossom period and germination period followed the same tendency, so the water consumption pattern and the variation of water sensitive coefficient in grapes were basically similar.