1. Cultivation time: The open field cultivation is usually planted before and after March 20th. After the emergence of the seedlings, it will take more than 10 days to spend the late frost period. Generally, no pre-convulsions will occur. The use of small arch cultivation, can be planted in mid-March, until the middle and late April gradually remove the plastic film, transferred to open cultivation.
2. Variety selection: The orange-red varieties with the same color of skin, meat, and heart column should be selected for export. Currently used are the new red, Japan's new Kuroda five inch ginseng, red beauty, Hongyan and other varieties.
3, soil preparation: should choose the upper deep, ventilated, well-drained sandy loam cultivation. The per acre Shi cooked organic fertilizer 3000 to 4000 kg, plant ash 100 to 200 kg, superphosphate 10 to 15 kg. Nitrogen fertilizer should not be too much. It is not appropriate to apply fresh manure, so as to avoid excessive length of leaves, slender roots, and divarication. When the preparation site must be deep-turned 25 to 30 centimeters or more, the topsoil should be fine and smooth. Generally used flat. If there is no deep-turning condition, soil conditioners should be sprayed to avoid deep plowing, to loosen and loosen the 50 cm deep soil, ensure root growth, and increase yield.
Before sowing, it is soaked in warm water of 40°C for 2 hours, then wrapped in gauze and moisturized. Place in 20 °C ~ 25 °C temperature conditions, 2 to 3 days to white exposed. Before planting, water should be used to make water. There are two methods of sowing and broadcasting. Drilling distance 15 to 20 cm, ditch depth of 2 to 3 cm, about 0.5 kg per mu. Cover soil 2 cm after sowing. Spread and spread 2 centimeters after covering with earth. When germination is sown, it must be watered first. After the water is soaked, the soil is sown.
When using small plastic sheds, the plastic film should be covered immediately to increase the ground temperature and promote seedlings.
4, field management
Seedlings, weeding: When 2 or 3 true leaves were used, the first seedlings were planted with a spacing of 3 cm and shallow ploughed weeds were ploughed between the rows. In 4 to 5 true leaves, combined with cultivating and weeding, maintain spacing of 10 to 17 cm 15 to 20 cm, about 30,000 seedlings per mu. 2 to 3 days after sowing, weed herbicide can be sprayed on the ground with 50% paraquat before weeds sprout.
Top dressing, watering: sowing until the seedlings are continuously watered to keep the soil moist and should be poured 2 to 3 times. After emergence, the number of waterings should be reduced, and the soil should be kept dry and wet, and water should be poured every 5-7 days. Seedlings should be promptly drained after flooding. In the 7-8 leaf stage, soil moisture in the loquat soil should be planted in deep-medium tillage soil. When the fleshy root begins to hypertrophy until 15 days before harvest, it should be watered in time, pouring water once every 3 to 5 days to keep the soil moist, so as to promote the rapid expansion of the fleshy root and obtain higher yield. If the water supply is not uniform, the soil will be dry and damp, which will cause cracks in the flesh and reduce quality. After the first seedling, 10 kg of urea was applied per acre to promote seedling growth. In the early stage of fleshy root enlargement, 15-20 kg of compound fertilizer is applied per mu, and 500 kg of mu per person can also be applied with water. Watering fertilizer in time. After fixing the seedlings, natural alizarin was sprayed every 20 days and sprayed 2 or 3 times in total to enhance photosynthesis and increase yield.
5. Disease prevention and treatment: Common diseases include: black rot, black spot, sclerotia, and so on. At the beginning of the disease, 72% Kelu 750 times liquid, or 52.5% fast dispersible powder 2000 times, every 5 to Once in 7 days, spray twice.
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