Non-pollution celery production technology in plastic greenhouses
Sixth, management after planting 1. Fertilizer planted water after planting in time, 3 to 5 days after the watering of a seedling. After easing the seedlings, the small water is poured and ground is kept moist. About 15 days after planting, 5 kg of urea was chased every 667m2. After 20 to 25 days, topdressing once, every time every 667m2 catch up with 10kg of urea, 15kg of potassium sulfate, or topped with 100kg of cake fertilizer per 667m2. Stop top dressing 10 days before harvest. In late autumn and winter, watering should be controlled. Watering should be carried out at 10 to 11 o'clock on sunny days. After watering, the ventilation and dehumidification should be strengthened. 2. A plowing and weeding process before cultivating and weeding, and cultivating and weeding before each fertilizer in the early stage of growth. The depth of ripping is 1 to 2 cm, and no ploughing is performed in the middle and late stages of growth. 3.Temperature greenhouse Shed shed 10 days before colonization of spring celery, raise the temperature, and after the planting temperature reached 20°C, began to release air, maintained at 15°C～20°C during the day and not less than 10°C at night. Greenhouse celery autumn shed when the temperature is lower than 12 °C. In December, the temperature is relatively low. It is necessary to cover the straw, paper and other insulation. VII. Pest Control 1. The main types of pests and diseases are spot blotch, early blight, melasma, soft rot, leaf spot, aphids, whiteflies and so on. 2. Control methods (1) Agricultural control 1 Disease-resistant varieties According to the main control targets of the local pests and diseases, the selection of disease-resistant, stress-resistant, and adaptable varieties are good. 2 Clean the garden to remove diseased leaves and diseased fruits in time and remove diseased plants. Take out plots for harmless treatment and reduce the number of pests 3 Fitness Cultivation Strengthen the environmental regulation of seedbeds and cultivate age-appropriate seedlings. Strengthen nutrient management and improve resistance. Strengthen water management and prevent drought or stagnant water. Results The old leaves and yellow leaves of the base were removed later. The four-wheel rotation system adopts a strict rotation system. The same plot shall be cultivated at least 3 years apart from the non-umbrella crops. Conditional areas shall be implemented with paddy-soil rotation or summer irrigation. 5 Facilities Protection Greenhouse cultivation adopts no-drop anti-fog membrane, ridge cover film; vent outlet is closed with insect-proof nets, and summer insect-proof nets and shade nets shall be used for shading and pest control to reduce pests and diseases. (2) Physical control 1 Insect killing lamp trapping The main insect trapping insect killing beet armyworm, diamondback moth, rapeseed meal, cotton bollworm, tobacco budworm, leafminer and so on. In general, one insect lamp is installed in each shed. 2 swatches trapped in the shed hanging yellow armyworm board traps kill whitefly, aphids, spotted fly and other pests, 30cm20cm yellow plate per 667m2 put 30 to 40 pieces, hanging height and the top of the plant flat or higher than 5 ~ 10cm. And hang a silver-gray reflective film at the entrance to the shed. 3 High-temperature disinfection In the summer, the cover film uses solar energy for high-temperature stuffy sheds, killing sheds and soil surface diseases, insects, bacteria, and eggs. Vape Pods,Refillable Vape Pen Pod,Pod System Device,Slim Zinc Alloy Vape Pen Shenzhen Wanna Technology Co.Ltd , https://www.veiikvape.com