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Detailed Explanation of the Biological Characteristics of Xinchuan Nakasu Peach

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I. Morphological Characteristics The tree is vigorous and relatively spreading. After open-center training and pruning, a 3-year-old tree is 260 cm tall, with a trunk circumference of 25 cm and a canopy diameter of 3 x 2.6 m. New shoots are green, 1-year-old branches are reddish-brown, and the trunk and perennial branches are grayish-brown. Leaves are dark green with a smooth surface. Leaf glands are kidney-shaped, small and inconspicuous. II. Biological Characteristics (1) Phenological Period In the Yangtze River basin, the flower bud swelling stage is in early to mid-March, the full bloom stage is from late March to early April, the flowering period lasts 57 days, and the fruit ripens in mid-to-late July. The growth

I. Morphological Characteristics The tree is vigorous and relatively spreading. After open-center training and pruning, a 3-year-old tree is 260 cm tall, with a trunk circumference of 25 cm and a canopy diameter of 3 x 2.6 m. New shoots are green, 1-year-old branches are reddish-brown, and the trunk and perennial branches are grayish-brown. Leaves are dark green with a smooth surface. Leaf glands are kidney-shaped, small and inconspicuous.

II. Biological Characteristics

(1) Phenological Period In the Yangtze River basin, the flower bud swelling stage is in early to mid-March, the full bloom stage is from late March to early April, the flowering period lasts 57 days, and the fruit ripens in mid-to-late July. The growth period is 100110 days.

(2) Growth and Fruiting Habits Young trees grow vigorously, and new shoots branch multiple times. If combined with 23 rounds of pinching, a stable high-yielding tree structure can be formed in the same year. After entering heavy fruiting, the tree vigor tends to be moderate, growth is stable, new shoots are thick and strong, the budbreak rate is high, the branching ability is strong, and compound flower buds are mostly present. Young trees in the initial fruiting stage mainly bear fruit on long and medium fruiting branches, while trees in the full fruiting stage mainly bear fruit on medium and short fruiting branches, accounting for more than 76% of the total fruiting branches. The fruit set rate under natural pollination is high, so thinning must be strict to increase fruit size.

(3) Early Fruiting and High Yield Xinchuan Nakasu young trees flower easily and bear fruit early, with characteristics of early fruiting and high yield. Two years after planting, the seedlings bloom and bear fruit, with an average of 28 fruits per tree, weighing 7.3 kg; 3-year-old trees yield 26.2 kg per tree, equivalent to 1775 kg per 667 sq m; 4-year-old trees yield 46.9 kg per tree, equivalent to 3142 kg per 667 sq m.

(4) Adaptability This variety has strong adaptability. Trial plantings in Liaoning, Shandong, Zhejiang, Hubei, Sichuan, Yunnan and other provinces under different soil conditions all showed good growth and fruiting, and it can be promoted for planting in both northern and southern regions.

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