A Detailed Guide to the Cultivation Techniques and Management Methods of Double-Cropping Red Raspberries
Have you ever heard of double-cropping red raspberries? How much do you know about double-cropping red raspberries? Do you know how to plant double-cropping red raspberries? How much do you know about the cultivation techniques and management methods for double-cropping red raspberries? We have gathered a lot of relevant information for you, and we hope it can be of some help. Friends who are interested in the planting methods and cultivation techniques of double-cropping red raspberries can take a look with me, and it can also add to your general knowledge of life.
How to plant double-cropping red raspberries
1. Orchard establishment and cultivation: It is recommended to choose sandy soil to build an orchard, with a required soil pH of 6.5-7.0; it is best to plant in spring or autumn using the strip trench method, with planting trenches both deeper and wider than 0.5 m, row spacing 2.0 m × 0.3 m, and 1110 seedlings planted per mu. It is best to apply enough base fertilizer all at once. Before planting, soak the seedling roots in water for 4 hours, then plant. The planting method is very simple: dig a hole 10-15 cm long, wide and deep, spread the seedling roots out and place them in the hole, then cover with soil and tread it firm; the key point is: plant deep and bury shallow, and the standard is: the soil covering the seedling roots and around the seedlings should not exceed the original water mark on the seedlings when they were in the nursery; where conditions permit, after planting do not let it rain or water it, or cover it with mulch, to ensure the survival rate.
2. Growth period management: In the planting year, there is only general management such as weeding, watering and loosening the soil. In that autumn it can bloom and bear fruit. In July of the second year, harvest the fruit on the 2-year-old canes, and after harvesting cut the fruited mother canes off from the base; from August to September, harvest the fruit on the 1-year-old canes that sprouted the same year.
3. Winter cold protection: In the cold regions of the north, it is necessary to bury two-year-old canes with soil to prevent cold, so as to prevent flower buds from freezing and canes from drying out. When burying with soil before freezing, press the selected canes down in one direction and tie them, then bury them with soil (about 15 cm thick) and cover them tightly. In winter they are frozen, then when it cools the soil is removed.
Cultivation techniques and management methods for double-cropping red raspberries
I. Cultivation techniques for double-cropping red raspberries
1. Selection of the orchard site
In fact, raspberry is a perennial rhizomatous perennial herbaceous plant that fruits year after year. It likes light and warmth, so it is necessary to choose a plot with good ventilation, light transmission, fertile soil and convenient irrigation to establish the orchard. Scattered plots and areas in front of and behind houses can also be used for planting, which can not only produce fresh fruit but also beautify the environment. At present, most raspberry fruit is exported to European and American countries, which have very strict environmental requirements, so with the development of industrialization, land far from pollution sources should be chosen.
2. Soil preparation
Before planting, the soil should be thoroughly cultivated to eliminate weeds. If the terrain is low, drainage ditches should be dug. For double-cropping varieties, a row spacing of 1.5 × 0.4 m is suitable. Use 1110 seedlings per mu, one plant per hole, and about 3 kg of decomposed farmyard manure can be applied per hole, mixed evenly with the topsoil and applied, which can play a role in drought resistance, mite resistance and high yield.
3. Planting period and method
The raspberry planting period is mainly spring planting and autumn planting, and there is also summer planting, winter planting (in the south), etc. Spring planting can be done after the soil thaws and before the seedlings sprout, and in the north it can be planted when the soil has thawed to a depth of 15 cm; for spring planting, early planting is preferable. Autumn planting is best after the seedlings have lignified and before the soil freezes. Autumn planting has a high survival rate, and the next spring the plants sprout early and grow fast. It is best to do it one month before the soil freezes. After autumn planting in the north, where conditions permit, the remaining aboveground canes should be cut off, and before freezing cover with about 2 cm of soil or seal the cut ends with wax to preserve moisture. After thawing in spring, the soil should be removed in time to prevent the buds from being smothered. Summer planting is generally carried out in early to mid-June. When the root sucker seedlings grow to 30-40 cm, plant the tender seedlings with soil and relatively complete roots into the planting holes, then water promptly to help them recover; water again after 3-5 days, and after 7-10 days the seedlings begin to grow. Summer planting is mainly suitable for replanting gaps in the field or planting in nearby areas. Winter planting is a planting method suitable for growers introducing plants in the south. In early winter or late winter, when the soil is not frozen, plant the heeled-in seedlings that were lifted in autumn in time. The advantage of this planting method is that after planting the seedlings can have a period of dormancy, and as the temperature rises they can gradually adapt to the local climate, improving the survival rate.
II. Management methods for double-cropping red raspberries
In fact, raspberry, like other crops, needs routine management such as hoeing weeds, loosening the soil, and watering during drought. Pruning double-cropping raspberries is relatively simple. After the seedlings sprout in spring, thin and weak canes and damaged canes can be cut off at any time according to their growth, and root sucker canes that are growing too densely can be cut off or transplanted. After fruiting in autumn, cut off all the canes, and there is no need to bury them with soil for cold protection. In the high-yield period, keep 3000-4000 or more canes, following the principles of convenient management, ventilation, light transmission, spacing between plants and distance between rows, and easy harvesting.
How should double-cropping red raspberries be fertilized correctly
1. In fact, raspberry fruit trees are more resistant to barren conditions and highly adaptable. The raspberry petiole is composed of epidermis, ground tissue and vascular bundles. Deep plowing and renewing the soil before planting raspberries can remove surrounding weeds. Raspberries should be carefully managed during the planting process, and the raspberry growing environment should be kept with sufficient sunlight, which can better ensure that the raspberries can overwinter safely. Garden staff should water in time to ensure sufficient moisture between the raspberries, and regularly prune the canes to ensure the growth of strong canes and the fruiting rate, cutting off some rotten canes and leaves to ensure the healthy growth of the whole tree. Since raspberry is a sun-loving plant, and raspberry has strong adaptability and can survive in various soils, especially some acidic sandy soils are more suitable for raspberry growth, so try to choose sandy soil areas. After planting raspberries, fertilizer should be added to promote the survival of the planted raspberry seedlings.
2. Everyone should use raspberry fruit tree varieties with good disease resistance. When planting raspberry fruit trees in this way, after planting raspberries, in order to improve the fruit-setting rate of raspberries, promptly apply a potting soil made of 50% garden soil, 30% coal ash or sawdust, 10% decomposed barnyard manure and 10% loess, which is more conducive to raspberry fruiting. The optimal temperature for raspberry growth is 18℃-32℃, and growth is slow below 5℃ or above 35℃. Raspberry fruit trees prefer fertilizer. When new buds sprout in spring, apply a quick-acting chemical fertilizer based mainly on nitrogen once or twice. When raspberries enter the initial flowering stage, apply a compound fertilizer based mainly on phosphorus and potassium two or three times. During the fruit-setting period, insist on applying wood ash extract once about every 10 days to improve the fruit-setting rate and promote rapid fruit enlargement. Raspberries like a lot of water during the vigorous growth period, especially in the high-temperature season, and should be watered once each in the morning and evening every day to keep the potting soil moist. When raspberries are flowering, watering should be appropriately controlled to improve the fruit-setting rate. In order for young raspberry trees to grow vigorously, fertilization with a compound fertilizer containing the three elements nitrogen, phosphorus and potassium is best for the growth of young raspberry trees. Garden staff should strengthen management among the raspberries, which is more conducive to improving the yield and quality of raspberries.
After this introduction, how much more do you know about double-cropping red raspberries? I believe everyone now knows how to plant double-cropping red raspberries, and has also mastered the cultivation techniques and management methods for double-cropping red raspberries. Friends who are interested in double-cropping red raspberries can buy some and give it a try. I hope my explanation is helpful to everyone.