First, management before planting 1. Low-temperature hardening seedlings. Spray Kapok and potassium dihydrogen phosphate solution 5 to 7 days before colonization. Each bucket of water (15 kg) plus Kappuk 10 ml, potassium dihydrogen phosphate 25 g, can promote strong root system, improve the cold resistance of melon seedlings. ability. At the same time, in order to control the seedbed moisture and reduce the temperature, it should be kept at about 20°C during the day and 8°C～10°C at night, so as to improve the adaptability of melon seedlings and shorten the time for seedlings to grow. 2. Prevent disease. In order to prevent melon seedlings from entering the shed and prevent dead seedlings after planting, one spray of thiophanate-methyl 1000-fold solution or Remiaoqing 2000-time solution can be sprayed 1 to 2 days before planting, and all leaves, stems, and roots are sprayed. , to achieve sterile seedling colonization. 3. Increase the temperature of ground in advance. In the early spring, planting melons must increase the temperature of the soil in advance. The scaffold should be erected and buckled in the 15 days prior to planting. 10 cm of ground temperature stable at 13 °C ~ 15 °C when the planting, the lowest can not be less than 12 °C, otherwise the effect of taking root. 4. Apply base fertilizer and keep planting pods well. Before the ditching, the base fertilizer should be applied. Generally, 3 to 4 cubic meters of organic fertilizer is applied per hectare, 30 to 35 kg of diammonium phosphate, 20 to 30 kg of potassium sulfate, and 3 to 5 kg of active magnesium zinc, boron and calcium of Goldman Sachs. The sorghum is well-grounded and made into sorghum, which is 1 to 1.2 meters wide. It is ridged and planted on a raft. The ravine is 50-60 centimeters wide and 20 centimeters high. Second, planting 1. Choose sunny weather for planting. Colonization should be selected on sunny days, and it is best to have more than three sunny days after planting, which is conducive to slow seedlings. 2. Planting density. Stand cultivation, double colonization, single vine pruning, generally planting 1600 to 2000 trees per acre, row spacing 60 cm, spacing 40 to 50 cm. 3. Planting methods. The first step is to pour enough water into the ditch and wait for the water to infiltrate the planting seedlings. Be careful not to plant too deep and cover the earthworms. Although the planting requires pouring small water, it must be thoroughly irrigated. When the seedlings are poured, the seedlings are not long, and small old seedlings are easily formed. Third, field management after planting 1. Temperature management. Properly arboring for 2 to 3 days after planting, the temperature is controlled at 25°C to 35°C, the night temperature is maintained at 15°C or more, and the membrane ventilation is removed when the noon temperature exceeds 36°C. 2. Disease prevention and control. When the humidity is high, it is prone to downy mildew, bacterial keratoses, and so on. It can be used to prevent and cure with 600 grams of liquid and 800 times of lotion. Powdery mildew is prone to occur later, and it can be sprayed with thiophanate-methyl wettable powder 1000 times. 3. Water and fertilizer management. After planting, the seedling water should be poured slowly. Slow seedlings 25 to 30 days into the flowering period, timely pruning, watering before flowering, per acre with water poured into the Gold and Sachs vegetables and fruits fresh 5 to 6 kilograms or high nitrogen compound fertilizer 15 to 20 kilograms. 4. Ventilation management. Ventilation should be controlled flexibly according to the weather. In the early stages of colonization, the ventilation openings in the central area are generally opened, the windy weather is used to open the lee-side ventilation openings, and the winds are opened in the morning to the air outlets. When there are no winds, both sides are opened, and ventilation is performed day and night. Closed Suction Catheter,Medical Closed Suction Catheter,Pvc Suction Catheter,Closed Suction Catheter Disposable Shaoxing Jenston Medical Products Co., Ltd. , https://www.sxjcmed.com