How many years does Changshou Chuanzao walnut seedling bear fruit? Yield of Changshou Chuanzao No. 2 walnut seedling

How many years does Changshou Chuanzao walnut seedling bear fruit? The yield of Changshou Chuanzao walnut seedling is a new variety of Changshou Chuanzao thin-shell walnut: the characteristics and advantages of Changshou Chuanzao walnut
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Walnut black spot, also known as black rot, occurs in the United States, Italy, Germany, etc. Our country is widely distributed in walnut-producing areas such as Hebei, Shandong, Shanxi, Liaoning, Henan, Jiangsu, Zhejiang, Sichuan, Yunnan, Shanxi, and Gansu, and some areas are severely affected. According to a survey in Shanxi, the general rate of plant damage is ~, the fruit damage rate is 3~, and in severe cases, the kernel yield may be reduced by up to ~~. After the walnut disease occurs, the young fruits will rot and the kernels will drop early. The damaged fruits that do not fall off will have a low kernel oil yield, which has a great impact on the yield. In addition to damaging walnuts, black spot disease can also infect many walnut plants.
Symptoms: It mainly damages young fruits and leaves, but can also damage twigs and flowers. First, round and polygonal small brown spots appear on the leaf veins. In severe cases, they heal each other, and there is a water-soaked halo around the spots. The ring, the gray-brown part in the center sometimes falls off, forming a perforation. The lesions on the branch tips are elongated, brown, and slightly sunken. In severe cases, the lesions expand to protect the branches and cause the upper sections to die. When young fruits are damaged, small black spots will appear on the surface of the fruit without obvious edges, and then gradually expand into pieces and turn black, and penetrate deep into the pulp, causing the entire fruit, including the kernels, to turn black, rot and fall off. After the inflorescence is infected, dark brown water-soaked lesions will appear.
The pathogen belongs to Xanthomonas bacterium, with short rod-shaped hyphae and a flagellum at the end. The colonies on the culture medium are transparent at first and turn white, gradually turning into grass yellow. On the beef extract culture medium, the colonies grow vigorously and stand out. Glossy, smooth, opaque, light lemon yellow, sticky. Bacteria can liquefy gelatin very slowly, without producing acid or gas in glucose, sucrose and lactose.
The first large-scale nursery stock wholesale market in China has in stock various varieties and specifications of grafted Sichuan Zao walnut seedlings, plum seedlings, American Shanchuan Zao walnut seedlings, chestnut seedlings and peach seedlings (ball peaches, late white peaches, honey peaches, winter peaches, Yellow peach, spring peach, flat peach), chestnut seedlings, kiwi seedlings (red heart), cherry seedlings (Ukraine, red lanterns), kneeling persimmon seedlings, grapefruit seedlings (Guanxi honey pomelo, red heart pomelo), orange seedlings, pear seedlings (crisp crown, Yellow crown, golden pear), loquat seedlings (big five-star), kumquat seedlings, soft-seeded pomegranate seedlings, grape seedlings, apple seedlings, jujube seedlings, pepper seedlings, etc.
Machinery products: walnut and agricultural and sideline products drying machine .Green walnut peeling and cleaning machine. Tree planting and digging machine. Road sweeper, tree digger, tree lifting machine, etc.
Contact person: Manager Lin Tel:
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