Japanese orange melon cultivation techniques

Japanese orange melon is a mini-pumpkin variety. The melon peel is light yellow. There are dozens of vertical grooves on the melon surface. The color in the groove is deeper than other parts, and the texture is delicate and sweet. The single melon weight is 200-300 grams. The cultivation techniques are now described below.

Sowing seedlings are planted in protected land, and the middle and lower reaches of the Yangtze River are sown in early spring in January and sown in early August. (1) Spring nursery. The seedbed is 1.2 meters wide, with electric heating lines. The 50-well plug tray was used, and the matrix was prepared with a volume ratio of peat, perlite and vermiculite of 3:1:1. Prior to sowing, the matrix-packed trays were stacked and pressed into a hole. The depth of the hole was 2 cm. The seeds of the pumpkin, which had sprouts, were placed flat in the wells, one for each hole. After sowing, the substrate was covered and the seedling tray was placed on a seedbed. After pouring the bottom water, it was covered with a plastic film and a small arch shed. At night, a 40 g/m2 double-layered non-woven fabric was covered in a small arch cover. The daytime temperature is controlled at 28 to 30°C and controlled at about 20°C during the night. When 20% of the seedlings are excavated, the plastic film is peeled off. After the seedlings are established, the temperature is appropriately lowered. The temperature is controlled at about 25° C. during the day and the temperature is controlled at about 15° C. at night, so as to increase the temperature difference between day and night. The substrate should be dry to see wet, selected sunny watering at noon. In early February, when the melon seedlings had three true leaves, the seedlings were planted. The temperature was reduced to about 20°C during the day and controlled at 12°C or more at night to facilitate the formation of female flowers and reduce the melon stage. (2) Autumn nursery. The formulation of the matrix is ​​the same as in spring. 72-hole plug trays are used. The seedbed is 1.2 meters wide and 2 columns of plug trays are laid flat. After the broadcast, the bed surface covers the shade net and the bottom water is poured. After 20% of the seedlings were removed, the shade nets were removed and shade nets were placed on top of the greenhouses at 8 a.m. every day, and were removed at 4 pm. 10 days after sowing, planting, extension of light before planting and appropriate hardening seedlings.

Site preparation Plantation organic fertilizer 1,000 kg per mu, 48 kg of potassium sulfate compound fertilizer 60 kg. 6-meter-wide greenhouses are made of 3 畦, 8 metre wide sheds are made of 4 畦, and sheds are left on both sides of 50 cm. White mulches are punched and planted on the rake surface. Each row is planted in 2 rows with a 50 cm spacing and 800 cultivars per acre. about. After planting, take a small shed, cover with black film in the fall to moisturize, cool and prevent grass.

Field management plants up to 25 centimeters in length pick up the vines on a sunny morning. When the plant reaches 50 cm, the base lateral branches are removed, leaving only the main vine. Japanese oranges grow vigorously, and each section has female flowers. It is necessary to timely pruning and remove the tendrils on the stems. The first female flower should be removed as early as possible so as not to affect the growth of the main vine. It is better to leave a third female flower. After that, one female flower will be kept every second quarter. The temperature in the early spring is low. After the female flower appears, artificial pollination is performed every morning. Timely sparse and fruit thinning, when the first melon has large eggs, apply 15 kg of compound fertilizer per acre and apply 0.2% potassium dihydrogen phosphate solution 3 to 5 times every 7 to 10 days; The melon needs a large amount of fertilizer and water, and the fertilizer and water should be carried out at the same time. When the first melon approaches maturity, the lower old leaves and diseased leaves are cut off. When the plant has 25 leaves, it can be topped and the single plant can have 6-8 melons.

Prevention of damping-off of disease and seedling stage seedling damping-off, damping-off with Propolis 72.2% propamocarb hydrochloride 500 times solution spray or irrigation control, downy mildew with kelu 72% frost urea manganese zinc WP 500 ~ 700 Double liquid spray control, anthrax, brown spot, powdery mildew with 10% difenoconazole water dispersible granules 800 to 1200 times spray control, aphids, thrips and whiteflies with 36% acetamiprid water dispersed particles 3000 times liquid agent spray control, viral disease virus A20% do not use copper acetate wettable powder 500 times spray control.

Harvested when the rind is hard and dark yellow, it can be stored at room temperature for 2 to 3 months.

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