Breeding methods of Caragana arborescens
The propagation of Caragana arborescens is generally carried out by seeding. Caragana seeds mature in early August, when the fruit turns dark yellow should be picked in time, picking too late, seeds will collapse due to pod explosion, difficult to harvest. Put the collected seed pods in the sun to dry, so that the seeds naturally depod, after cleaning, put them in clean bags and place them in a shady and ventilated place for preservation. In the middle of March of the next year, seeds can be sown after soaking in warm water at 45℃ for 48 hours.
Select fertile soil, flat terrain, good drainage of sandy loam as nursery land, and should apply decomposed fermented cattle manure as base fertilizer, the dosage is 3500 kg per mu, the base fertilizer should be mixed with the nursery soil, after drying treatment, rake fine leveling, and use pentachloronitrobenzene to disinfect the seedbed. Sowing can be broadcast, with a seed amount of 20 grams to 25 grams per square meter. After sowing, gently tread with feet and sprinkle water once.
The soil should be kept moist during seed germination. After seedling emergence, irrigate once every 5 to 7 days. Irrigation time should be in the morning and evening. Wait until the seedlings grow to about 20 cm. Thinning seedlings should be carried out on rainy days and should be carefully operated to prevent injury to other seedlings.
In order to accelerate the growth of seedlings, urea was applied once in mid-June, phosphorus and potassium were applied once in early August, and watering was timely after topdressing. Transplanting can be carried out after two years.
Time: 2019-06-12 Click:
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