Abstract:

Yuanxiaochun was introduced to the red and yellow soil of Quzhou for planting with orange rootstock seedlings or using Ponkan, Huyou, and Gongchuan Wenzhou honey citrus as intermediate rootstocks for high grafting and replanting, all of which showed fast growth, vigorous tree vigor, high and stable yield, excellent flavor and quality, strong resistance to high temperature, drought, and freezing, and had the potential for promotion and application. The average tree height of orange rootstock seedlings in the fifth year of planting is 2.96 m, with a crown diameter of 3.58 m×3.43 m, an average 667 m² yield of 1 322.7 kg; The average tree height in the fifth year of high grafting and replanting is 3.25 m, with a crown diameter of 4.13 m×3.75 m, an average 667 m² yield of 2 269.0 kg. The average weight of a single fruit harvested in mid January in greenhouse cultivation is 142.3 g, with a fruit peel thickness of 2.59 mm, a juice yield of 56.4%, an edible rate of 76.8%, a soluble solid content of 12.9%, and a total acid content of 0.97%, as well as a strong and juicy taste, tender flesh without residue, excellent flavor and taste. Supporting cultivation techniques such as garden planting, high grafting and seed replacement, shaping and pruning, fertilizer and water management, flower and fruit management, and disease and pest control were summarized in this article.

Key words: Quzhou, Yuanxiaochun, introduction, cultivation techniques