Chun Yan, Maixiang, Cangfang Zaosheng, Shahongtao, Jingqi, Okubo, August Crispy and Hongxuetao.
(2) Site conditions.
Altitude 1 120m to 1650m, soil type is loessial soil and Diantu, soil pH is pH7.5 to 8. 1, and organic matter content is ≥ 1%.
(3) Cultivation management.
1. Seedling breeding: Grafting breeding is carried out with the seedlings of Gansu peach, Maotao peach and Tao Qiu peach as rootstocks.
2. Garden construction: planting density ≤840 plants/hectare.
3. Fertilizer and water management: mainly organic fertilizer, and organic fertilizer should be applied to the orchard at full fruit stage ≥60 tons/hectare; Irrigation should follow the principles of full winter, early spring, skillful summer and controlled autumn, and timely irrigation should be carried out according to soil moisture.
4. Shaping and pruning: the tree shape is wide, and the combination of winter pruning and summer pruning is adopted, and the branch quantity is ≤ 225,000 branches/hectare.
5. Flower and fruit management: thinning flowers and fruits. The distance between branches on the same side of early-maturing varieties is 12cm ~ 15cm, and that of middle-late-maturing varieties is 14cm ~ 22cm. Output ≤37.5 tons/hectare.
6. Environmental and safety requirements: The use of pesticides and fertilizers must comply with the relevant provisions of the state and must not pollute the environment.
(4) harvesting.
Early-maturing varieties were harvested in June 16, middle-maturing varieties were harvested in mid-late July, and late-maturing varieties were harvested in mid-late August to early June 10. 1, sensory characteristics: item/variety shape, size, colored area, round or nearly round fruit weight ≥ 125g ≥ 50% Maixiang fruit, nearly round fruit weight ≥ 140g ≥ 55% barn early fruit, round fruit weight ≥ 200g ≥ 60% Shahong peach fruit, or nearly round fruit weight ≥ 200g. The weight of round or nearly round fruit in Okubo is more than 200 g 60%; In August, the weight of nearly round or oblate crisp fruit was more than 220g, accounting for 60%; The fruit of red snow peach is nearly round, and the weight of a single fruit is more than 40%. Physical and chemical indexes: soluble solids (%) titratable acid (%) hardness (㎏/ Cm) Chunmei ≥9.0 ≤0.6 ≥4.6 Maixiang ≥ 10.0 ≤0.5 ≥4.5 Early barn growth ≥1/kloc-0.