Rapid Propagation of Rare Fruit Tree Varieties
With regard to the newly-bred or newly introduced rare breeds, in the case of a severe lack of scion, how to speed up the propagation of species and rapidly invest in the production of fruit seedlings is an urgent problem that fruit tree producers need to solve. Two new methods are described below: Propagated species in plastic sheds. It is best to use the thick seedlings in the nursery to plant the rare seedlings in the autumn or the second year of the spring season. Can also be shed in early February, and then transplanted grafted seedlings seedlings, or planted into rootstock seedlings after grafting. General shed width 2 meters -3 meters. The method of close planting of the rootstock is 20 cm 10-12 cm, and 40 to 50 plants can be planted on 1 m2. The temperature in the greenhouse is controlled at 20°C during the germination period and up and down at 10°C during the day. The seedlings grow at 25°C-28°C at noon, 14°C-15°C in the morning, and no more than 30°C in the morning. The temperature difference between day and night is 10°C or more. All the soil in the shed is cultured. The formula is 1 part each of soil, earth dung and horse dung. After mixing, 0.1% of urea, 1% of superphosphate and 1% of grass ash are mixed by weight. During seedling growth, spray twice or three times with 0.3% urea or 800 times potassium dihydrogen phosphate. As a top-dressing fertilizer. In the middle of June, the propagation coefficient of the three to four buds at the base of the stay was up to 20 times. Explosive to seedlings. In order to multiply the good variety of species, after picking good varieties from the plastic greenhouse, choose the mature fruit seedlings in the open nursery. At a height of 70 cm (10 centimeters above the level of dryness), carry out one-off bud grafting. Good breed. Immediately afterwards, it will be cut and scraped to promote its germination, so that it can be used in autumn and winter or in the coming spring. With the method of seedling propagation, the breeding coefficient of a budding can reach more than 20 times. If these species are not sufficient, it is best to leave them for the next spring. To use seedlings for seedlings, the seedlings should be selected to graft strong seedlings of large leaf varieties; after thoroughbreds mining, the original seedlings can still be planted after drying. China Agricultural Network Editor