Key points and advantages and disadvantages of corn wide and narrow row planting technology

Corn is the main food crop. Its planting technique is related to corn yield and farmers' income. Therefore, studying the planting technology of wide and narrow rows of corn is of great significance to corn cultivation. Here we will talk about the key points, advantages and disadvantages of the wide and narrow row planting technology of corn.

1. Key points of corn wide and narrow row planting technology

1. Fine land preparation: land preparation should be done in autumn, with harrowing and hoeing in time, so that the soil is fine and free of clods, stubble, and discarded plastic film. The soil should be loose and hollow on the top and solid on the bottom.

2. Apply sufficient base fertilizer: Apply 1500kg/mu of organic fertilizer and 35-50kg/mu of special compound fertilizer for corn with an effective content of 45%.

3. Plant spacing design: Corn is planted in wide and narrow rows, with narrow rows being 40 cm and wide rows being 80 cm. The plant spacing is designed according to the appropriate density of the variety. The wide rows are too wide, the space is not used reasonably, and land is wasted. If the narrow row is too narrow, it will affect ventilation and light transmission, and the plants cannot grow and develop normally, and individual plants will compete with each other. If the narrow row is too small, the middle and lower parts of the plants will not receive enough light, making them prone to lodging and the stems will be thin and soft, which will affect the increase in yield. If you use mulch film for covering, use 120cm wide mulch film, and ensure that the row spacing is 40cm when sowing, and in the middle of the film.

4. Prevent fertilizer from burning seeds: For mechanical sowing, if fertilizer and seeds are sown at the same time, the distance between fertilizer and seeds must be adjusted to prevent fertilizer from burning seeds due to a close distance, and the distance between fertilizer and seeds must be checked at all times during the sowing process.

5. Variety selection: high-yield varieties with good comprehensive resistance, strong stress resistance, and the ability to mature safely. At the same time, the plant height should be moderate, generally around 280cm. Plants that are too tall will affect the coordinated development between individuals.

6. Seed selection: coated seeds with high vitality, high germination rate, full grains and uniform grain size. To ensure a high germination rate and survival rate, and at the same time ensure that the seedlings are complete, uniform and strong.

7. Sowing at the right time: when the temperature is stable above 12℃, the ground temperature is stable above 10℃, the field water holding capacity is between 60-70%, and the sowing depth is 4-5cm. If sowing is too early, the germination time will be relatively prolonged. On the one hand, it is easy to be infected by diseases, and on the other hand, it is easy to form weak seedlings, which will affect the later growth and development.

8. Pressing after sowing: When sowing mechanically, the roller should be adjusted to ensure the appropriate weight; if sowing manually, press in time after sowing to ensure uniform pressing speed to prevent uneven pressing, which will lead to different early and late pressing and affect the uniformity of the field.

9. Spraying herbicides : Choose the right herbicides. If you are spraying pre-emergence sealing drugs, spray the solution on the day of sowing or the next day; if you are using post-emergence herbicides, spray them when the corn has 3-5 leaves after emergence. When preparing the liquid medicine, clean the equipment first to prevent other medicines from remaining in the sprayer and causing medicine damage. The spray must be uniform, and it is strictly forbidden to miss sprays or repeat sprays.

2. Advantages and disadvantages of wide and narrow row planting of corn

1. Planting corn in wide and narrow rows can improve the ventilation and light environment in the field, increase the marginal effect between rows, and achieve the goal of increasing yields. Planting corn in wide and narrow rows can achieve fallow planting while keeping the planting area unchanged. The wide rows are regarded as fallow belts and the narrow rows are regarded as planting belts. In the second year, the wide rows become planting belts and the narrow rows become fallow belts. Alternating cultivation every year thereafter and combining planting and breeding is conducive to restoring soil fertility and increasing yields. Planting corn in wide and narrow rows facilitates field operations, relatively saves labor, and saves production costs.

2. The advantages of wide row and narrow row planting methods are obvious, but if the technology is not well mastered, the advantages will turn into disadvantages. The aforementioned field planting management requires a high width-to-width ratio and spacing between corn. According to many field experiments, appropriate spacing and ratio will greatly increase corn yield, but if the plant spacing is not set appropriately, the marginal effect and yield of corn will be reduced.

Using wide and narrow row planting techniques to grow corn crops is a big improvement compared to previous intensive planting methods. Under this planting method, corn can grow better.