Cultivation Techniques of Roselle
Roselle belongs to the Malvaceae family. It is a 1-year-old herbaceous plant native to Sudan, Africa. Its purple stem, green leaf, yellow flower, red fruit, and bright color are the most ideal natural plant health beverages in the world. Seeds can be oil-dried and have high medicinal value. They can also be eaten, can be used as feed and fuel under the stem, and can be described as whole body. Is a treasure. In order to study this technology, Hongta District Agricultural Technology Station introduced roselle in 2011 for planting. The success is as follows: 1. Soil requirements: Roselle is a plant that is afraid of earthworms and is not afraid of drought. , well-drained sandy loam cultivation. Apply 1000-1500 kg of farmyard fertilizer per acre. Second, the planting density: According to the fertility of the soil, row spacing: (0.60.8) centimeters, sowing 1300-1500 ponds per acre is appropriate. Third, sowing time: soaking seeds before sowing 12 hours, sowing in late April to early May is more appropriate, on-demand 3-4 per pond; seedlings transplanted with nutrition, in a timely manner when the height of 12-15 cm seedlings plant. Fourth, field management: 1. Timely pest control: emergence 5-7 days after sowing, with 2.5% beta-cyhalothrin 50 ml / mu spray, control pests. Root rot disease prevention and treatment: Occurs when the use of 5% of Bao Dingning 5 grams, 2% 30 ml of kasugamycin 15 kg of water to soak twice. Spraying pesticides must be carried out before flowering. Spraying of pesticides is strictly forbidden during flowering to avoid the presence of drug poisons in flower buds and affect the product volume. 2. Appropriate time seedlings, Dingmiao seedlings, tipping: When the seedling grows to 10-15 cm, the seedlings will be planted, weak seedlings and diseased seedlings will be planted. Only one robust seedling will be left in each pond, and the rest will be allocated to fill the deficiency pond. The seedlings should not be too late. Otherwise, the growth of seedlings will be affected. When the seedlings are 80 cm high, they will be tipped, which will cause the branches to grow more and more. 3. Fertilization and Irrigation: Roselle does not need large fertilizers, but poor land and seedlings need to be properly fertilized with 20 kg of compound fertilizer, 8 kg of urea, and 5 kg of zinc fertilizer per acre. Seedlings; 30 kg of compound fertilizer per acre and 20 kg of potassium sulfate before flowering to meet the needs of flowering. 4, weeding, weeding, rowing rake: plant height 30 cm, combined with top dressing soil, timely cultivator 2 or 3 times. In summer, due to excessive rainfall and overgrown weeds, weeds should be manually removed to avoid competing with roselle for water, and during the rainy season, we must pay attention to digging and draining, and prevent and cure dead seedlings and root rot. 4. Harvested, cool-tanned roselle is mainly harvested into pods and enters late-to-late October. The grains in the pods are hardened or browned. Choose sunny days and use scissors to cut the fruit branches, remove the pods and fruit, and let the sun dry. After the shrinkage, the buds are removed, and when they are dislocated, a metal tube of the size of the caliber is used to cover the base of the fruit and the round fruit is pushed out to separate the calyx from the fruit. The calyx must be kept intact and cannot be peeled off and then placed clean. The venue and utensils are cool or dried at 40°C. Roselle is acidic, it is easy to mold, it is necessary to cool in time.
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