探究不同树形对黄冠梨( Pyrus pyrifolia ' Huangguan')果实品质、产量及经济效益的影响，为梨树科学栽培管理和产业升级提供理论支持。选取双臂顺行式棚架形、密植圆柱形和传统纺锤形等 3种典型树形为研究对象，测定不同树形下黄冠梨性状及生理生化指标，并对建园、栽培管理成本进行统计分析。结果表明，黄冠梨双臂顺行式棚架形栽培模式的单果重为 341.51 g、果实纵径为 82.36 mm、果实横径为 84.66 mm、可溶性固形物为 122.6 g/kg、蔗糖含量为 19.09 mg/g FW、SPAD值为 52.70，均优于其他树形栽培模式，且纯收入(61 778元∕hm2)与收益率( 61.53%)最高，栽培管理成本最低，为 38 625元∕hm2，但建园成本最高。综上，双臂顺行式棚架形栽培模式可显著提高黄冠梨果实品质，密植圆柱形栽培模式的产量最高，从而增加了经济效益，但需权衡高建园成本，建议结合农户资金与技术条件推广应用。

To investigate the effects of different tree shapes on the fruit quality, yield, and economic benefits of Pyrus pyrifolia 'Huangguan' so as to provide theoretical support for the scientific cultivation and management of pear trees and industrial upgrading,this study selected 3 typical tree shapes, namely double-arm parallel trellis system, high-density cylindrical, and spindle systems, asthe research objects. Fruit traits and physiological and biochemical indices of Huangguan pear under different systems were deter.mined, and the costs of orchard establishment and cultivation management were statistically analyzed. Results showed that under thedouble-arm paralleltrellis system of Huangguan pears, the single fruit weight (341.51 g), fruit longitudinal diameter (82.36 mm), fruittransverse diameter (84.66 mm), soluble solids (122.6 g/kg), sucrose content (19.09 mg/g FW), and chlorophyll SPAD value (52.70)were all significantly better than those of other systems. In addition, this system achieved the highest net income, at 61 778 Yuan/ha,and the highest rate of return, at 61.53%, while showing the lowest cultivation and management cost, at 38 625 Yuan/ha, however, itsorchard establishment cost was the highest. In summary, the double-arm paralleltrellis system can significantly improve the fruit quali.ty of Huangguan pears, whereasthe high-density cylindrical systme produces the highest yield, thereby increasing economic benefits.Nevertheless, the high orchard establishment cost should be carefully weighed, and its promotion and application are recommended inaccordance with farmers'financial and technical conditions.

S661.2