Using greenhouses to take strawberries, melons, cabbage efficient double crops, the average yield of 1400 kg of strawberry, 2000 kg of melon, cabbage 2500 kg, the efficiency of up to 16,000 yuan per mu. Planting melons and pakchoi after strawberry harvesting can give full play to the insulation of winter and spring in plastic greenhouses and shelter from rain in summer and autumn, increase the annual utilization rate of greenhouses, and increase planting efficiency.
Strawberries are selected from the Fengxiang varieties that are suitable for early maturing. The per mu of base fertilizer is 2000 kg of farmyard fertilizer, 50 kg of calcium magnesium phosphate fertilizer and 50 kg of ternary compound fertilizer. The site preparation is sorghum, which is 45 centimeters wide, 25 centimeters high and 45 centimeters wide. In mid-September, 6 to 7 pieces of expanded leaves were selected, and the roots were thicker than 1 cm. The strong seedlings with well-developed root systems were planted on a cloudy day or on a sunny evening. Each row is planted in two rows with a spacing of 20 cm and a plant spacing of 18-20 cm. Planting 7400-8000 plants per acre. Around October 25, the veil was covered with a black mulch and a drip irrigation hose was placed under the membrane. When the temperature dropped to 15°C in early November, the film was snagged in time.
Strawberry fruit development temperature is 18 ~ 25 °C, during the day the shelf temperature is maintained at 25 ~ 28 °C, kept at 5 °C or more at night, the emergence of high temperature above 30 °C ventilation and cooling. Relative humidity in the shed is maintained at 60% to 70%. Timely removal of old leaves, leaves, diseased leaves, and pods that have been extracted reduce nutrient consumption. Flowering in the shed to assist in pollination during the flowering period can increase fruit setting rate and reduce malformation. Eliminate small flowers and small fruits, malformed fruits, and pests and diseases on high branches. The fruits are re-fertilized during the expansion period. Generally, 10 to 15 kilograms of compound fertilizer is applied per acre, and each stage of fruit is topdressed in a timely manner. Fertilizers containing chlorine cannot be applied. Grass poisoning pests mainly include powdery mildew, gray mold, anthrax, and spider mites, aphids, thrips, and Spodoptera litura. Powdery mildew is controlled with 1000-1500 times of the 10% Shigao water dispersible granule, anthrax is treated with 25% prochloraz emulsifiable concentrate 1000 times, and gray mold is controlled with a 40% pyrimethanil suspension 1000 times solution. With 20% of konjac WP 2000 times, aphids, thrips with 20% acetamiprid WP 3000 times, Spodoptera litura with 1% emamectin benzoate emulsion 1500 times liquid prevention.
Mulch Films are a revolution in the agriculture industry as it presents an economical and environment friendly protective solution for crops and soil. It not only maintains the quality of soil but also aids in the faster growth of plants. By reflecting light, it ensures control on growth of weeds as photosynthesis process will not be carried out.
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