Kiwi belongs to the family Actinidia, Actinidia. There are currently 52 species, varieties and types in the world. At present, among the species of genus kiwifruit, Chinese kiwifruit and kiwifruit are widely used in China.
(1) Chinese kiwifruit: The shoots are yellow-green or slightly reddish. The branches, petioles, and main and lateral veins of the leaves are densely covered with very short hairs. The hairs on the late shoots fall off and are almost smooth. Thick leaves, yellow-green leaves, dense soil star-shaped hair. The fruit surface is smooth with a very short hair and the flesh is yellowish green.
(2) Delicious kiwifruit: strong growth potential, with purple-red shoots, when the branches were densely brownish and hard-brown, the leaves were scattered along the veins with brownish yellow bristles, and the backs of the kiwifruits were white or light yellow stellate hairs, along the main Veins yellowish villous or bristly. The fruit surface is covered with yellow-brown bristles or hard bristles near the ends; the flesh is green or yellow-green; the leaves, flowers, and fruits are larger.
(3) Actinidia arguta: Wild in the northeastern, northwest, north, and the Yangtze River valley shrubs or forests, strong cold resistance. The fruit is oval in shape, small and smooth, weighing 3 to 5 grams, and a maximum of 13 grams. It can be used as a cold-resistant rootstock.
(4) Dog jujube kiwifruit: distributed in the forests of northeast, Hebei, Shaanxi, Hubei, Jiangxi, Sichuan, Yunnan, etc., mostly growing at an altitude of 3,600 meters, with the strongest cold resistance and small fruit, only about 3 grams. . No cultivation value.
(5) Ge jujube Kiwifruit: mainly distributed in the northeast, northwest, Shandong and Hubei. Hunan, Henan and other provinces were born in forests at an altitude of 3,200 meters. They have strong cold resistance, small fruits, and a diameter of only about 1 cm.