Abstract: 【Objective】 To investigate the effects of foliar application of zinc, boron, and calcium fertilizers on the main agronomic traits and seed production yield of maize under high-temperature conditions in Xinjiang. 【Methods】 Maize inbred lines CXJ75 (female parent) and CXJ380 (male parent) were used as experimental materials, zinc sulfate, sodium borate, and calcium gluconate were applied as foliar fertilizers. Twelve different foliar fertilizer ratio treatments and one control (CK) treatment were established, arranged in a randomized block design. The agronomic traits and seed production yield of maize under different foliar fertilizer treatments were measured and analyzed. 【Results】 (1)Different ratios of foliar fertilizers could delay the flowering period to some extent and shorten the interval between anthesis and silking. (2) The mixed application of 1% zinc sulfate, sodium borate, and calcium gluconate foliar fertilizers yielded the best results.(3)Maize yield showed a linear relationship with multiple agronomic traits, with high correlations observed with the number of kernel rows per ear, ear diameter, 100-kernel weight, seed setting rate, grain weight per ear, and the number of kernels per ear. 【Conclusion】 Under high-temperature stress during the flowering period in Xinjiang, the foliar application of a mixed fertilizer containing 1% zinc sulfate, sodium borate, and calcium gluconate (5,000 L/hm²) can effectively improve seed production yield. This findings have provided a reference for efficient, high-quality, and high-yield maize seed production in Xinjiang.