I. Growth habits Raspberry is a perennial shrub of the Rosaceae family. Potted plant height is about 1 meter, and it can form a tree. At present, China's main planting varieties are imported black gems, rubies, yellow gems, thornless raspberries, and genetically grown raspberries in China. The author tried to plant potted plants, and the ruby ​​raspberry was better. In the summer and fall seasons, it has a high rate of fruit set, high yield, and quick results.
Raspberry grows best in sandy loam. 50% vegetable garden soil, 30% coal dust or sawdust, 10% mature manure and 10% loess can be used to prepare the basin soil, making it slightly acidic. The optimum temperature for raspberry growth is from 18°C ​​to 32°C, and it grows slowly below 5°C or above 35°C.
Second, planting time regardless of north and south, the temperature can be planted above 0 °C, but the spring and autumn as well. In the spring from mid-March to late April, the best time for planting is from mid-October to late November. There were a few fruiting dates in the year of planting in the spring, most fruits in the fall of the following year in the fall can be fruited, and fruit in the third year into the full fruit period, with a continuous result of more than 30 years. Potted raspberry should use large basins with a caliber of 30 cm or more, one for each pot, and change pots every spring or fall. Raspberries planted for more than three years should be replaced with large cylinders with calibre of 40 to 50 cm in order to guarantee the year. Annual yield. The root of the plant should be filled with enough basal fertilizer.
Third, the water and fertilizer management raspberry fertilizer, in the spring sprout germination when applied one or two nitrogen-based fast-acting fertilizer. In the first flowering stage, compound fertilizers containing phosphorus and potassium are applied two or three times. During the fruit setting period, the ash leaching solution should be applied every 10 days or so to increase the fruit setting rate and promote rapid fruit enlargement. When the summer is hot, use less fertilizer and avoid applying concentrated fertilizer. Raspberry grows during the vigorous growth period, especially in the hot season. Each morning and evening, it is necessary to pour water once and keep the potted soil moist. Watering should be properly controlled during flowering to increase fruit setting rate. In the winter, we must stop fertilizing and reduce watering, so as to keep the basin soil from turning white.
Fourth, propagation methods Raspberry breeding mainly by branching and cutting methods. Raspberry can be naturally rooted under the pot soil (branch of small raspberries), such as fertilizer and water supply is suitable, a tree raspberry can expand 20 to 50 seedlings in the year, and some can even expand seedlings close to one hundred trees. Branching is the use of seedlings that are produced by bunches of roots, separated from the mother plant in spring and autumn each year, and the other pots are planted. The cutting method uses cuttings cut from spring and autumn for cuttings. The cuttings must have 4 buds (4 sections), and the two buds should be inserted into the soil and the two buds should remain on the soil. The raspberries that are propagated by the ramets can bear some fruits in the year, and the raspberries that are propagated by cuttings will be fruited the next year. The fruit can be entered in the third year.
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