The appearance quality and internal quality of Zhouzhi kiwi fruit are very good, the fruit is large (all above 100g), the fruit shape is neat, sweet and sour taste, the taste is rich, the flesh is green and the commodity is strong.

(1) Qinmei kiwi fruit The fruit is goose-shaped or nearly cylindrical, the flesh is emerald green, the texture is fine, the juice is juicy, the taste is sweet and sour, the aroma is strong, and the palatability is strong. The average fruit weight is 108 grams, the maturity period is 10-15 days, the shelf life is 20-25 days, and the high yield is good. It is a high-grade fruit for both fresh food and processing. The comprehensive traits of Zhouzhi kiwifruit are better than those of the same variety in other areas, especially the “Qinmei” kiwifruit produced in Meixian, Huxian and Yanqiao areas adjacent to our Zhouyi, and the kiwifruit awards in our county. The content and taste of the parts, VC and amino acids were not up to the production of the week, but did not win. (2) Hayward kiwi fruit has an oval shape, dark green skin, soft and fine, and is the best fruit type of delicious kiwi. The average fruit weight is 100g. The flesh is dark green, juicy, rich in flavor, sweet and sour, sweet and sour. Excellent, fresh fruit hardness 18 kg / cm 2, very resistant to storage and transportation, long shelf life, mainly used for fresh food. The overall traits are superior to New Zealand (the conclusions drawn by New Zealand fruit experts after tasting). (3) Mute is an excellent variety selected by a fruit grower in the dumb town of Zhouzhi County in the Zhouling section of the Qinling Mountains. It has high yield and strong resistance. The variety has a cylindrical shape, green flesh, sweet and sour taste, rich flavor and very refreshing. It sells well in more than 10 large and medium-sized cities such as Shanghai, Hangzhou and Nanjing. The plant was planted in a non-circumferential area and showed yellowing of the leaves. The tree was weak, the fruit was small, the taste was sour, and it was eliminated without commercialization. (4) Xuxiang kiwifruit The fruit is cylindrical, yellowish green, brown hard bristles, yellowish green flesh, fragrant and juicy, sweet and palatable, and the taste is more delicate than ordinary kiwi. Containing vitamin C99.4-123.0 mg / 100 grams of fresh pulp, soluble solids 13.3% - 19.8%. (5) Xishuang No. 2 kiwifruit Xi'an Fruit Industry Technology Promotion Center was selected from Ma Zhancheng, Ma Zhicheng, a farmer in the Qinling Mountains in 1992. The genus is a Chinese kiwi soft hair. series. Up to 22%, the flavor is excellent. It has early flowering and large amount of flowers. It is 15-20 days earlier than the flowering of "Qinmei" kiwifruit. Its supporting male and female plants bloom in the same day, and the amount of pollen is large, the flowering period is long, and the flower is aromatic. The variety has early characteristics such as early fruit, early maturity, high yield, resistance to diseases and insects, wind resistance and frost resistance. The output per plant in the second year is up to more than 30 kg. It is currently one of the varieties of medium-ripening, soft-haired, yellow-flavored, sweet-scented kiwifruit. (6) Huayou Huayou Kiwifruit is a natural hybrid offspring of Chinese kiwifruit and delicious kiwifruit. It was selected in Zhouzhi in 2007. The fruit has an oval shape with a single fruit weight of 80-120 g and a maximum of 150 g. The fruit is brown or greenish brown, and the peel is thick and difficult to peel off. The flesh is yellow or greenish yellow, the flesh is juicy and juicy, the aroma is rich, the flavor is sweet, the quality is good and refreshing, the fruit is thin columnar, milky white and edible. The fruit matures in the middle and late September, and is harvested at room temperature, the post-ripening period is 15-20 days, the shelf life is about 30 days, and it can be stored for about 5 months at 0 °C. It is currently one of the varieties of yellow kiwifruit. (7) Cuixiang The excellent strain discovered by the Zhouzhi County Agricultural Bureau in the second wild kiwifruit resource survey in 1998 was selected from the Xi'an Kiwifruit Research Institute from 1999 to 2007 for 8 years. Young branches brown, dense reddish brown pubescent, large leaves, mostly elliptic, perennial branches dark brown hairless. Each result branches 1-5 female flowers, no ear flowers; the beginning of flowering period is in late April, the flowering period is 3 days, the flowering time is early in May, and the young fruit is formed at the same time. The fruit has a long oval shape, a greenish brown peel, a thin peel, easy peeling, a greenish flesh, a fine texture and a lot of juice. The fruit is sweet and delicious, with a strong aroma. The average fruit weight is 82g, the largest single fruit weight is 130g, and the single tree has 70%. The single fruit weight of 100% can reach 100g, and the average yield per plant in four years is 31kg. After many years of continuous observation, the fruit matured at the end of August. Tested by West Agricultural University Test Center: total sugar 5.5%, total acid 1.3%, vitamin C content 185 mg / 100g, soluble solids 11.57%, and contains 17 kinds of amino acids required by the human body, just harvested fruit hardness 19.7kgF / cm2 The soluble solid content of edible fruit is more than 17%. It sprouts in the second half of March, blooms in early May, and matures from late August to mid-September. It is an early-maturing variety.

Zhouzhi kiwifruit quality technical requirements (a) variety. Qin Mei, Hayward, dumb and other suitable varieties. (2) Site conditions. The suitable soil should be sandy loam, the thickness of the soil layer is above 60cm, the soil organic matter content is more than 1.0%, and the soil pH is between 6.5 and 7.5. (3) Seedling breeding. The seeds of the same species of mature kiwi fruit were harvested, artificially sown, and the seedlings were propagated as rootstocks. The scion is collected from the maternal branches of the pure and non-quarantine pests and diseases, and grafted and propagated. (4) Planting density. The row spacing is 3m×4m, and 825 plants per hectare are planted. The ratio of male to female plants is 6:1 to 8:1. (5) Reasonable plastic trimming. 1. Flower shaping: T-shaped scaffolding or large scaffolding, single main frame, and two main vines are selected in the main part close to the frame surface, respectively extending along the center wire to both sides. 2. Pruning: combining winter shears with summer shears, winter shears for large trees with a plant spacing of 3m, and each tree is selected to have 20 to 24 female branches. The main methods of summer pruning are: germination, tying, and topping, so that the ratio of leaves to fruit is 4:1. (6) Fertilization. Mainly based on base fertilizer, supplemented by topdressing. 1. Base fertilizer: The time is generally from late October to late November. The type of base fertilizer is mainly based on decomposed farmyard manure, and is equipped with a suitable amount of chemical fertilizer. The base fertilizer generally accounts for 60% of the annual fertilization amount. 2. Top dressing: mainly applied during the growing season, mainly based on chemical fertilizers, and topdressing is generally divided into three times. (1) Top dressing before flowering, mainly based on nitrogen fertilizer. (2) Topdressing of fruit during the expansion period, mainly P and K fertilizer. (3) Topdressing in the late stage of fruit growth, mainly P and K fertilizers. 3. Top dressing: Root dressing is generally carried out according to the needs of fruit tree growth results. (7) Harvesting. When the soluble solid content of the fruit is ≥ 7%, it can be harvested. (8) Storage. After the fruit harvesting and sub-test, it is placed in a special fruit storage box, and after being pre-cooled for 24 hours, it is put into storage in time to stabilize the temperature in the library between 0 °C and -1 °C. When the stock fruit hardness (peeling) is reduced to 6 to 4kg/cm2, it should be released in time to ensure the fruit quality. (9) Quality characteristics. Zhouzhi kiwi fruit is large (all above 100g), the shape is even and tidy, the fruit is light brown, the hair is more, the flesh is green, the Vc content is high, and the taste is rich. 1. Qin Mei: The fruit is oval, the skin is yellowish brown, the fruit weight is 100 to 150g, and the flesh is green. Fresh fruit: soluble solids above 7%, fruit hardness above 9kg/cm2. Out of the fruit: soluble solid content of 9% or more, hardness of 4kg / cm2 or more. 2. Hayward: The fruit is oblong, the fruit weight is 80 to 150g, the skin is yellowish brown, and the flesh is green. Fresh fruit: soluble solid content of 7.4%, hardness of 9kg/cm2 or more. Out of the fruit: soluble solid content of more than 13%, hardness of 4kg / cm2 or more. 3. Dumb: The fruit is cylindrical, with a single fruit weight of 87 to 127 g. The skin is brown and the flesh is green. Fresh fruit: soluble solids above 6.5%, hardness 9kg/cm2. Out of the fruit: soluble solid content of 9% or more, hardness of 4kg / cm2 or more.

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Producers within the scope of protection of kiwifruit GI products may submit an application to the Quality and Technical Supervision Bureau of Zhouzhi County of Shaanxi Province for the use of “Special Marks for Geographical Indication Products”, which shall be approved by the General Administration of Quality Supervision, Inspection and Quarantine.