What preparations should be made before transplanting corn seedlings?

1. What are the cultivation techniques of maize seedling?

Corn seedling technology is to cultivate corn seedlings through seedling raising. It is very important to transplant corn cultivation techniques in the contradiction of self-help season when the location is suitable.

Second, the scope of application of corn seedling transplanting technology?

Mainly suitable for southwest and south corn areas. Annual growth of the middle and lower reaches of the Yangtze River, annual growth of two crops, corn or three special mountains and corn areas, and annual growth of southwest hills.

3. What are the main advantages of corn seedlings?

The advantages of maize seedling transplanting technology include: 1 It can make full use of the growing season, prolong the growth of maize, facilitate the implementation, solve the contradiction between the two seasons and improve the achievement index. It can ensure that seedlings, seedlings seven, seedlings rhyme and Miao Zhuang are resistant to recession and resistance. 3. It can ripen 10 ~ 15 days in advance, which is beneficial to flowering fluidity and improves pollination rate. 4. It can be pulled out to improve the quality of seedlings. After transplanting, the corn is deep and Miao Zhuang, and the straw is short. Five-direction transplantation makes the leaves arrange orderly, distribute evenly in space, and improve the utilization rate of light energy, which can reach more than 500 ~ 1 1,000 plants per mu. Transplanting six seedlings can save 30% to 50% and reduce the production cost.

4. What were you doing before corn seedling cultivation technology?

(1) Seed preparation. Use mixed varieties suitable for local cultivation. ?

(2) floppy disk preparation. Determine the number of floppy disks according to the planting area and density of corn and floppy disks. It is more suitable to choose the specifications of 60 cm long, 32 cm wide, 4 cm, 100 hole. ?

(3) Selection of seedlings. The seedbed should be sheltered from the wind, with convenient water sources, relatively far away or transplanted. ?

(4) Before sowing 10 to 15 days, 80% of fertile soil, 9% of screened rusty agricultural fertilizer and 1% of slurry are evenly mixed. ?

(5) Seedbed preparation. Determine the seedbed area according to the amount of land required for each mu of transplanting field. Before hanging the board, 1.5 meters wide, suitable for drainage, fine and flat. ?

(6) seed processing. Two days before sowing, it will be sunny for 2 to 4 hours. Then soak in water 10? 12 hours, and then you can sow 1 2 days. I bought clothes and can use them without treatment.

5. What is the key technology of transplanting corn seedlings?

(1) sow in time

When planting, the ground grounding of seedbed is 5g furan per square meter. Take flat bed soil, seed and fry, and pour the seedbed under water. In the seed stage, evenly sow and germinate downward. After sowing, even in the soil, seeds, straws, precious stones, etc. can be covered. So as to ensure that the seedlings are uniform and firm. After sowing the seeds, the water spilled, and everyone was enough for each other. Finally, keep the covering film, and add a sunshade net in summer.

(2) Seed management

Seedbed management mainly controls temperature and humidity. The key point before seedling raising is heat preservation, and the arch temperature is generally 20? Control at 25℃, if it exceeds 30℃, disassemble both ends of the arch and cool; The humidity of the arched shed is not white, such as the white of the seedbed tablet computer. It should be covered in time to keep the soil moist. Before the second renovation period, the key point is to prevent seedling control for a long time. The temperature in the arch shed is about 20℃, and water is often sprayed to keep the soil moist. Arrive 7 days before seedling transplanting, and gradually increase the membrane area of arch-shaped strands according to the temperature situation, which can appear on the first day 1/3, the second day 2/3 and the third day, and transplant water and water one day to make seedlings grow.

(3) timely transplantation

The age of transplanted seedlings is usually 1 2 leaves per heart, 1 3 leaves per heart, and should not exceed 1 4 leaves per heart. The key of transplantation is to protect roots, shorten time and improve survival rate. When transplanting, according to the size, weak grading, broken degree and the intensity of directional transplanting, that is, the leaves are vertical, and the transplanting depth is better at the neat green-white boundary. After planting, the root water supplies power for the root water, so that it is naturally closed.

conclusion

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