Optimization of a Water-Saving and Fertilizer-Saving Model for Enhancing Xinjiang Korla Fragrant Pear Yield, Quality, and Net Profits under Water and Fertilizer Coupling

To develop an optimal irrigation and fertilization system for Korla fragrant pear in the Xinjiang region, effects of water fertilizer coupling on quality, yield, use efficiency (IWUE), partial productivity (PFP), net profits under condition limited drip were studied through field experiments by combining multiple regression analysis spatial analysis. A comprehensive quality evaluation model was constructed using principal component analysis, 12 indices evaluated comprehensively. The experiment adopted a two-factor crossover design with three levels (W1: 5250 m3 ha−1, W2: 6750 W3: 8250 ha−1), accounting 60%, 80% 100% ETe (where denotes evapotranspiration sufficient supply crops); four application (F1: 675 kg F2: 750 F3: 825 F4: 900 designated F80%, F90%, F100%, F110%, respectively; treatments. results showed that overall improved based integrated pear. Four components extracted model, their cumulative contribution 89.977%; best obtained W3F2 treatment worst W1F1 treatment. when range is 7484–8250 ha−1 N-P2O5-K2O (181-223-300)–(200-246-332) IWUE, PFP, can reach > 85% maximum value. These provide scientific basis management orchard Korla, Xinjiang.