The invention belongs to the technical field of breeding planning, and particularly relates to a
large model construction method and
system for multi-
source data collaboration pear precision breeding planning, and the method comprises the steps: obtaining a multi-source
collaboration data set, constructing a five-dimensional
incidence matrix, and building a unified correlation basis of multi-dimensional data; constructing a constrained knowledge expression structure and training a constraint consistency reasoning model on the basis, analyzing a user breeding instruction in a constraint
driving mode, and generating a combined constraint condition set containing a
gene feasible region and a multi-
phenotype collaborative target; calling
germplasm resources under a cross-domain feature alignment and feature-level desensitization framework, executing
phenotype-
genotype collaborative screening, parent dynamic matching and multi-generation
genetic evolution deduction, and generating breeding planning
simulation data; and finally, outputting an optimal breeding scheme through a multi-dimensional
evaluation system, and continuously updating the model by utilizing
verification data. According to the invention, unification of multi-
phenotype balanced synergistic improvement and
stable gene transfer is realized, and the breeding efficiency and variety adaptability are remarkably improved.