In many regions of our country, the large population leads to a surplus of labor that is difficult to reassign, and rural economies often develop at a slow pace. To revitalize these areas, it is essential to make efficient use of land resources and local labor, while also boosting the output value per unit area. One effective approach is the adoption of the triple-cultivation model, which significantly enhances productivity and has proven to be a promising strategy for rural development. **Analysis of the Benefits of the Strawberry, Big Greens, and Cantaloupe Triple-Cultivation Model** In recent years, the successful cultivation of strawberries, big greens, and cantaloupes in the Luohe area of Henan Province has demonstrated the potential of this model. The three-matured cultivation system, introduced in Linyi in 2000, has yielded impressive economic returns. On average, strawberries produce 3,000 kg per mu with an output value of 12,000 yuan; melons yield 2,000 kg per mu, generating 4,000 yuan; and big greens produce 1,000 kg per mu, valued at 500 yuan. This results in an annual total output value of approximately 16,500 yuan per mu. **Cultivation Techniques for the Second and Third-Maturing Models** 1. **Breed Selection**: The choice of varieties depends on fertility characteristics, flower bud differentiation periods, and market demand. For strawberries, short-dormancy varieties are preferred. Vegetables like Shanghai Qing, parsley, and spinach are ideal for big greens, while light-skinned cantaloupe varieties are commonly used. 2. **Planting Methods and Layouts**: - **Strawberry Cultivation**: Early-maturing greenhouse planting should begin in late August or early September. Basal fertilizer typically includes 5,000–8,000 kg of fully decomposed organic manure, 40–50 kg of compound fertilizer, and 200 kg of cooked cake fat. Soil is mixed thoroughly using a rotary cultivator, forming raised beds 15–20 cm high, 40–50 cm wide, and spaced 90–110 cm apart. Drip irrigation systems allow for wider beds, while those without such systems require narrower ones. - **Big Greens Planting**: After strawberries are established, water is applied, and seeds are scattered over the soil, covered lightly with fine earth. Water is given again when the plants have two true leaves, without applying fertilizer during this period. - **Cantaloupe Cultivation**: In early February, seedlings are planted in nutrient pots and placed directly into trenches. A plastic film covers the area to regulate temperature and humidity. When planted between strawberry rows, the distance is set at 40 cm. At this stage, the strawberries are in their peak production phase, while the cantaloupes are still in the seedling stage, minimizing mutual interference. 3. **Field Management**: - **Strawberry Care**: Throughout the growing season, old leaves are regularly removed. If sufficient basal fertilizer is used, no additional fertilization is needed for the first fruit. Once the fruits reach finger size, 5 kg of NPK compound fertilizer is applied per 50 square meters before flowering. Foliar sprays and trace elements are recommended during this time. Temperature control follows a pattern: higher in the early stages (28–32°C) and lower later (18–23°C), with night temperatures adjusted accordingly. - **Big Greens Maintenance**: The soil must remain moist, and two rounds of watering with fertilizer are applied. Harvesting occurs when the plants have 4–6 leaves, ideally before the strawberry blooming period. - **Cantaloupe Management**: After planting, a thiophanate-methyl solution and potassium dihydrogen phosphate are sprayed. When the vines have 5–6 leaves, they are pruned every 10 days. Bactericides are used to prevent disease. Vines are trimmed, and only one fruit per plant is left after thinning. 4. **Pest Control**: - **Strawberry Gray Mold**: Use chlorothalonil aerosol or 100-speed fuming agent, or apply 65% dexamethasone WP 500 times or 50% speed Ke Ling 800 times before flowering. - **Big Greens Pests**: Treat greenworms and aphids with sulfuric acid solution or Hero 500 times. - **Cantaloupe Diseases**: Apply 7% thiophanate-methyl 600–800 times or 40% polyphosphoric acid suspension 800 times for powdery mildew. For downy mildew, use 72% mildewine disease net 800–1000 times or 58% formazan Mn-Zn 500 times. Root rot can be treated with agricultural streptomycin or thiophanate-methyl. By following these techniques, farmers can maximize yields, improve product quality, and ensure sustainable rural economic growth through the triple-cultivation model.

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