Wang Zhonghui, a fruit farmer in Penglai, selected and bred from the bud variation of Yanfu 3, and compared the varieties with Yantai Fruit tree workstation.It was named "Yanfu 0". In 2005, it was planted at designated places and tested in different apple producing areas. In 2012, it passed the examination of Shandong Crop Variety Examination Committee and was approved as "Yanfu 10".

1. Characteristics

Fresh food, large crown, tree potential moderate prosperous, strong dry, thick branches, tree posture half open.Perennial branches russet, lenticels small, dense, rounded, convex, white.The leaves are large, with an average width of 5.2cm and a length of 7.9cm. They are mostly oval in shape. The leaves are dark green in color.Bud pink, petals white after blooming, corolla diameter of 3.2 cm, more pollen.Fruit oblong, fruit shape index average 0.9, high upright pile;The fruit is large and weighs 326 grams on average.The fruit color is full of thick red, the color is a piece of red, gorgeous;The flesh is yellow, dense and crispy, with an average hardness of 9.1kg/cm2.With rich SAP, fruit ripening in late October, young trees grow more prosperous, germination rate is high, branch forming force is strong, mature tree potential is moderate, new shoots after the short branches of 4 ~ 6 side branches.The results of short fruit branches were the main, and the habit of axillary flower bud was easy to produce flower results.The Joe anvil tree begins to bear fruit in 4 ~ 5 years, the dwarf anvil tree begins to bear fruit in 3 years, and enters the fruiting stage after 5 years.There is no strict selectivity to the cultivar, and the fruit-setting rate of the inflorescence can reach 80%.The ability of continuous results was strong, 45.7% of the results could be obtained continuously for 2 years.Soluble solids 15.0%, titratable acid content 0.15%.Poor resistance to wheel disease, anthrax resistance, early leaf litter disease.To the climate, the soil adaptability is strong, suitable planting area is wide.In the first growth cycle, the yield per mu was 1560 kg, which was 12.3% higher than that of the control tobacco.In the second growth cycle, the yield per mu was 3,980 kg, which was 11.8% higher than that of the control tobacco.

2. Key points of cultivation techniques

2.1 Park construction: The site should be selected in the agricultural production area with good ecological conditions, deep soil layer and sustainable production capacity.The environment of garden plot conforms to the environmental requirement of producing area of produce safe quality and pollution-free fruit.Scientific planning of planting trend, installation of facilities, and determination of reasonable plant row spacing should be carried out. Wide and close planting should be adopted, with plant row spacing of 2.5 ~ 3 ×4 meters. It is suggested to configure pollination tree as Lu Li or Venus gold.

2.2 Shaping and pruning: Tree shape adopts spindle shape or slender spindle shape.Young trees adopt the cultivation technique of "fixed drying in one year, double pruning in two years, extension pruning in three years, forming hanging fruit in four years, and high yield in five years", that is, fixed drying at 1 meter of seedling in the first year after planting.In the spring of the second year, 3 ~ 5 buds of the shoots were left for heavy cutting, and the elongated shoots were cultivated as main branches.In the third spring, all the main branches with a length of more than 1 meter were divided into 80 ~ 90 degrees. 1/4 ~ 1/5 of the extension head of the central trunk was cut off, and the main branches were cultivated with buds every 20 centimeters at different directions.In the fourth year, the tree height reached about 3 meters, and the main branches in the first layer began to bear fruit.In the fifth year, the yield per mu is 1250 ~ 1500 kg.When pruning in summer, remove competition branches, back branches, short diagonal branches, short fruit branches;Winter pruning mainly to thin branches, adjust the tree structure, maintain a reasonable amount of branches.

2.3 Fertilizer and water management: for each 100kg fruit, pure nitrogen, 0.8kg phosphorus, 1kg potassium and 250-300kg basal fertilizer are applied in the annual fertilizer amount.Topdressing was applied before and after flowering, in the period of young fruit expansion and 1 month before fruit collection, and basal dressing was applied in one time after fruit collection in autumn.Leaf spraying fertilizer 4 ~ 5 times a year, generally combined with orchard spraying, to supplement the growth of fruit trees needed boron, calcium, zinc, iron and other trace elements mainly.Water should be irrigated according to soil moisture.

2.4 Prevention and control of diseases and insect pests pay attention to the prevention and control of red spider mite, fine moths, apple rotation, powdery mildew, spotted deciduous leaf disease, brown spot, etc., and pay special attention to the prevention and control of branch rotation disease.

Suitable planting area and season: Suitable for spring planting in Shandong, Shanxi, Henan, Hebei, Shaanxi, Yunnan, Guizhou and Xinjiang Apple producing areas.

3. Notes

Pay attention to the prevention and treatment of red spider mite, golden moth, apple rotation, powdery mildew, spotted deciduous leaf disease, brown spot, etc., should pay special attention to the prevention and treatment of branch rotation disease.