The selection of seedbed beds is the same as that of cold-tolerant lettuce cultivation. The seedbed is made into a 1.2-meter-wide high-car, and the sides of the car are slightly higher than the mid-carriage. The seedlings are soaked in the front of the planting, and the seeds of the germination are spread in the evening, and then a layer of sifting compost is used to cover the seeds. After the time, put a small arch shed of 70-80 cm on the seedbed, cover the shade net to keep the soil moist, avoid the scorching sun and heavy rain. After the emergence of the seedlings, the sunshade net is covered at around 9:00 am every day, and the sunshade net is uncovered at around 9:00 pm, and the time for shading is gradually shortened. When the seedlings are 3 to 4 pieces of true leaves, the shading net is completely removed. Apply 4 to 5 times of light manure water during the seedling period, and keep the seedbed moist. The seedlings are 1 to 2 times, and the seedling distance is 3 to 4 cm. The seedling age is fixed in about 25 days. When the seedlings are out of the true leaves, they are evenly sprayed, and sprayed once with 800 times of carbendazim to prevent fungal diseases. The age of the seedlings should not be too old, and transplanted 16-20 days after the early broadcast. Before transplanting, it is necessary to strictly remove the seedlings of the seedlings or the knotted seedlings and transplant them with soil.
Strainer Flanged,Flanged Strainer,Flanged Y Strainer,Y Strainer Flange Type
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