Corn seedling tray seedlings not only save labor and money, but also increase production and income, while corn seedling tray can also cultivate vegetable seedlings and cotton seedlings, the application prospect is broad. 1. Characteristics of corn tray seedlings 1.1 Early sowing and relieving the contradiction in cornices Corn seedling tray seedlings are warmed by floppy disk cover film, and the sowing date can be 15-20 days earlier than live broadcast. Such as the use of double film seedlings and cultivation, sowing date can also be advanced. Planting corn varieties with short growth period and strong resistance can be used in the morning market and have good benefits. Early sowing time can be obtained for agricultural time, to ease the conflict. 1.2 The quality of seedlings is good. After growing the seedlings, the maize seedlings will have a small adverse effect on the external environment, the temperature inside the membrane is appropriate, the fertilizer and water are concentrated, the seedlings are neat, the seedlings are strong, the root system is developed, and the stress resistance is strong. When transplanting, it does not hurt the seedlings. After the planting, there is no return to the green period, and the survival rate is high. The growth is obviously better than the nutrient soil (block) breeding method. 1.3 The growth period is shortened, and the yield is increased. The corn seedlings are not transplanted at the seedling-reducing stage, the growth and development are fast, and the growth period is shortened by 3-5 days compared with the nutrient soil (branch) seedlings. At the same time, it grows vigorously and has strong viability. The corn stalks are large, many grains are full, and the grain is full. The yield increases by 4%-9%. 2, corn seedling transplanting techniques 2.1 The preparation of nutritious soil nutrients must be sufficient, fertilizer effect, loose texture, good air permeability, no bacteria, eggs and weeds. The water content is suitable to be scattered by hand and ground. Before disassembly, the nutritious soil must be disinfected. 2.2 Pendulum-packed soil corn cultivating floppy disks 59-60 cm long, 32.5-33.5 cm wide, 4.5 cm high, 100 holes per tray, depending on the seeding density to determine the retort, about 40 per acre, plus two preparations . The seedbed is 1.2 meters wide and two rows of seedlings are placed. Place a thin layer of slime or fine soil on the car before placing the plate. Put 3.5 centimeters of nutrient soil into the pit before sowing. 2.3 timely sowing before sowing should be selected and drying, and soaking germination. The spring corn must be sown in fine weather, first soaked with warm water at the time of sowing, sowing 1-2 seeds of germination at each hole, covering it with mulch immediately after being covered with fine soil, and heating and insullating the small shed. 2.4 Seedling management The temperature is controlled within 20-38°C during seedling emergence. After the seedlings are flushed, the flattened mulch film is released according to the weather. Water supply should be moderate. Pay attention to suitable temperature and humidity long seedlings, low temperature and low humidity hardening seedlings. 2.5 Transplanting Before planting and planting, lift the membrane for several days, and stop watering. When planting, the corn seedling trays will be washed and stored, and planted seedlings will be planted. Other cultivation techniques are the same as the maize nutrient soil (block) seedling transplanting techniques.
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