Ginkgo has a strong adaptability and a wide cultivation area and is suitable for use as a street tree.
First, seedlings selected seedlings should grow robust, well-developed roots, xylem whitish, roots slightly red, closely attached to the xylem. If the root system becomes dark, it may be long before the trunk is green. As a street tree should be selected more seedlings or male plants, the trunk is relatively straight, uniform tree shape, branching point in the 3 to 3.5 meters.
Second, the planting of early spring planting easy to survive before sprouting, the selection of deep fertile soil, organic matter content of 1% to 3%, good permeability of water permeability. Put the cooked organic fertilizer in the bottom of the pit and add 20 cm thick ripe soil to make it fully mixed so as not to burn the roots. Ginkgo can be planted in bare roots with a diameter of 5 cm or less, and cultivated with soil above 6 cm. The seedlings planted on bare roots are in the mild seedlings year, and seedlings with earthballs can grow in the same year. After the young seedlings are planted, they are flooded with water. Before the big trees are planted, the pits are filled with water. After the water seeps, the big trees are planted in the pits and compacted so that the water in the pits comes back to moisten the roots. The second watering should dig the ditch in the pit to fill the water, so that the water slowly penetrates into the root of Ginkgo biloba. Can not use the flood irrigation method, resulting in the survival of transplanted Ginkgo biloba is not the main reason is not dead, but bubbled to death. Because the roots of Ginkgo biloba have a large amount of respiration and flood irrigation, it is easy to cause anaerobic suffocation without rooting new roots, and the roots gradually rot.
Third, management
1. After irrigating Ginkgo biloba, after thawing in the north, pour it once before germination. If the weather is dry in May, pour water once again. This is Ginkgo biloba's growth peak in one year. In the middle of August, it is the second peak of growth of Ginkgo biloba, and it is watered once. Both irrigations can be combined with fertilization.
2. Fertilization Fertilizer nursery can be carried out in spring and summer. In the spring, 3,000 to 4,000 kilograms of organic manure is applied to every 667 square meters between two rows. Rotation is performed with a small rotary tiller to spread the fertilizer evenly over the soil. In the middle, large seedlings can be opened by several shots of the ditch, and the organic fertilizer and the topsoil can be mixed and filled into the ditch. If the amount of fertilizer in the spring is large, it can be used once a year, and when the amount is small, it should be applied once in mid-August.
3. Pruning ginkgo generally do not have to trim, because the ginkgo shoots less hair, even if the seedling nursery, should also maintain more foliage, in order to facilitate its accelerated thickening. In the previous year when the seedlings were sold, the branches below 1.8 meters were cut off. After one year of growth, the cuts could be covered, the epidermis was smooth, and the branches stood upright.
4. In the cultivator spring and autumn, one cultivator was used to improve the permeability of the soil, and the fibrous roots of Ginkgo biloba were trimmed to stimulate fibrous roots to germinate.
5. Diseases and Insect Pests Diseases of Ginkgo biloba mainly occur in the seedling stage. The main insect pest of Daejeon seedlings is the beetle larvae. Seedlings were ventilated and ventilated, loosened topsoil, and sprayed with Bordeaux to prevent blight. There are three common methods for preventing and controlling earthworms: First, while applying decomposed organic fertilizer, the whole garden is sprayed once with 3,911 pesticides and 500 times liquid, and the fertilizer sprayed into the soil is spun into the soil. The second is to mix the bran, rice bran, etc., and mix it with trichlorfon. Hold it in a bucket for two days and allow it to fully absorb the pesticide and then spread it into the ground for cultivating. Third, every 10 meters or so, a pile of dried grass is buried, and water is often sprayed. Every two months, weeds are removed and concentrated to kill cockroaches.
6. Cultivation of the resulting tree Ginkgo biloba was dioecious and cross-pollinated. The result tree should be equipped with a pollination tree. Ginkgo biloba's pollination ability is very strong, in the breeze wind downwind 25 km are effective pollination area. The female twigs were obviously born with turns. The branches grew flat and the leaves were dark, while the male twigs were erect and alternate. Ginkgo orchard planting spacing is 46 meters, seedlings grow fast, select the breast diameter of 3 to 4 cm seedlings, truncate grafting, generally use grafts. The scion was selected from 3 years old, shiny skin, with 3 to 6 short branches, and the result was a fine grained variety. 3 to 4 years after grafting can be fruited.
Ginkgo has "false living" and "dead-dead" phenomenon. Some Ginkgo biloba can spread leaves even if the root system is dead, and can even sprout in the second and third year, but the leaves are very small. When the nutrients in the tree are exhausted, the leaves are stopped. This is the phenomenon of “false living†of ginkgo biloba. Some ginkgo plants did not germinate in the first year or even the second year after planting, but the bark was still green, and it only started sprouting and leafing in the third year. This is the phenomenon of “dead death†of ginkgo biloba.
First, seedlings selected seedlings should grow robust, well-developed roots, xylem whitish, roots slightly red, closely attached to the xylem. If the root system becomes dark, it may be long before the trunk is green. As a street tree should be selected more seedlings or male plants, the trunk is relatively straight, uniform tree shape, branching point in the 3 to 3.5 meters.
Second, the planting of early spring planting easy to survive before sprouting, the selection of deep fertile soil, organic matter content of 1% to 3%, good permeability of water permeability. Put the cooked organic fertilizer in the bottom of the pit and add 20 cm thick ripe soil to make it fully mixed so as not to burn the roots. Ginkgo can be planted in bare roots with a diameter of 5 cm or less, and cultivated with soil above 6 cm. The seedlings planted on bare roots are in the mild seedlings year, and seedlings with earthballs can grow in the same year. After the young seedlings are planted, they are flooded with water. Before the big trees are planted, the pits are filled with water. After the water seeps, the big trees are planted in the pits and compacted so that the water in the pits comes back to moisten the roots. The second watering should dig the ditch in the pit to fill the water, so that the water slowly penetrates into the root of Ginkgo biloba. Can not use the flood irrigation method, resulting in the survival of transplanted Ginkgo biloba is not the main reason is not dead, but bubbled to death. Because the roots of Ginkgo biloba have a large amount of respiration and flood irrigation, it is easy to cause anaerobic suffocation without rooting new roots, and the roots gradually rot.
Third, management
1. After irrigating Ginkgo biloba, after thawing in the north, pour it once before germination. If the weather is dry in May, pour water once again. This is Ginkgo biloba's growth peak in one year. In the middle of August, it is the second peak of growth of Ginkgo biloba, and it is watered once. Both irrigations can be combined with fertilization.
2. Fertilization Fertilizer nursery can be carried out in spring and summer. In the spring, 3,000 to 4,000 kilograms of organic manure is applied to every 667 square meters between two rows. Rotation is performed with a small rotary tiller to spread the fertilizer evenly over the soil. In the middle, large seedlings can be opened by several shots of the ditch, and the organic fertilizer and the topsoil can be mixed and filled into the ditch. If the amount of fertilizer in the spring is large, it can be used once a year, and when the amount is small, it should be applied once in mid-August.
3. Pruning ginkgo generally do not have to trim, because the ginkgo shoots less hair, even if the seedling nursery, should also maintain more foliage, in order to facilitate its accelerated thickening. In the previous year when the seedlings were sold, the branches below 1.8 meters were cut off. After one year of growth, the cuts could be covered, the epidermis was smooth, and the branches stood upright.
4. In the cultivator spring and autumn, one cultivator was used to improve the permeability of the soil, and the fibrous roots of Ginkgo biloba were trimmed to stimulate fibrous roots to germinate.
5. Diseases and Insect Pests Diseases of Ginkgo biloba mainly occur in the seedling stage. The main insect pest of Daejeon seedlings is the beetle larvae. Seedlings were ventilated and ventilated, loosened topsoil, and sprayed with Bordeaux to prevent blight. There are three common methods for preventing and controlling earthworms: First, while applying decomposed organic fertilizer, the whole garden is sprayed once with 3,911 pesticides and 500 times liquid, and the fertilizer sprayed into the soil is spun into the soil. The second is to mix the bran, rice bran, etc., and mix it with trichlorfon. Hold it in a bucket for two days and allow it to fully absorb the pesticide and then spread it into the ground for cultivating. Third, every 10 meters or so, a pile of dried grass is buried, and water is often sprayed. Every two months, weeds are removed and concentrated to kill cockroaches.
6. Cultivation of the resulting tree Ginkgo biloba was dioecious and cross-pollinated. The result tree should be equipped with a pollination tree. Ginkgo biloba's pollination ability is very strong, in the breeze wind downwind 25 km are effective pollination area. The female twigs were obviously born with turns. The branches grew flat and the leaves were dark, while the male twigs were erect and alternate. Ginkgo orchard planting spacing is 46 meters, seedlings grow fast, select the breast diameter of 3 to 4 cm seedlings, truncate grafting, generally use grafts. The scion was selected from 3 years old, shiny skin, with 3 to 6 short branches, and the result was a fine grained variety. 3 to 4 years after grafting can be fruited.
Ginkgo has "false living" and "dead-dead" phenomenon. Some Ginkgo biloba can spread leaves even if the root system is dead, and can even sprout in the second and third year, but the leaves are very small. When the nutrients in the tree are exhausted, the leaves are stopped. This is the phenomenon of “false living†of ginkgo biloba. Some ginkgo plants did not germinate in the first year or even the second year after planting, but the bark was still green, and it only started sprouting and leafing in the third year. This is the phenomenon of “dead death†of ginkgo biloba.
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