In the middle and late August, strawberries will be planted in the off-season four-membrane-covered facility. Currently, it is a crucial period for soil preparation, species selection, and seedling scheduling. The majority of facility strawberry growers should prepare for planting in advance, and propose the following technologies: opinion.
One, soil finishing
In the 7-10 days before the planting of strawberries, combined with soil preparation, 3,000-4,000 kg and 30 kg of three-component compound fertilizer with sufficient decomposed organic fertilizer were applied as basal fertilizer. The depth of soil preparation is 25-35 cm. Attention should be paid to the removal of residual roots and weeds from the upper crop, and the promotion of soil maturation to make the soil flat, wadding, and loose. Appropriate repression or watering. Land ridges are then used. The ridge height is generally 25-30 cm, the ridge width is 30-35 cm, and the ridge spacing is 65-70 cm. After starting ridges, drip irrigation belts are laid in the middle of the ridges to prepare for irrigation.
Second, species selection
Should choose a short period of dormancy, good quality, resistance to storage and transportation, disease-resistant varieties, such as Hong Yan and Zhang Ji, Italy 17, sweet Charlie and so on. Planting area of ​​less than 50 acres can be considered 2-3 varieties collocation; planting area of ​​more than 100 acres can be considered early, middle and late varieties collocation, or appropriate extension of planting time, adjust the time to market and human and material resources.
Third, seedlings scheduled
When purchasing seedlings, the time and quantity of buying seedlings should be determined according to the planting time and planting density. Generally suitable for planting in cloudy or cloudy days in late August, 8000-9000 acres planted. Seedling selection criteria: When purchasing seedlings, choose more than 4-5 normal leaflets, green leaves, thick leaves, moderate petiole length, well-developed root systems, new roots, and rough roots about 1 cm in size. Disease-free seedlings are used as seedlings. Seedlings scheduled time: in the week before planting, they should go to the nursery base for field visits to determine seedlings. According to the transport distance to determine the start time of seedlings, generally half a day before planting strawberries to the base is appropriate. Predetermined quantity: It can be determined according to the planting area and planting density, generally 9000-10,000 strains per acre. Seedling storage and transportation: pay attention to cooling, moisturizing and protecting root buds. Storage and transportation temperature is generally kept at 0-10°C to avoid heat yellowing of seedlings; at the same time keep roots moist, so as to avoid dehydration of roots; transport carefully during storage, and take them gently to prevent root shoots from sprouting and causing unnecessary loss. loss.
PTFE Coated Guide Wire,Guide Wire,hydrophilic guide wire,medical guide wire
Anesthesia Medical Co., Ltd. , https://www.trustfulmedical.com