A Complete Guide to Spring Corn Planting Time and Precautions
Corn is an important food crop for us. Corn planting can be divided into spring corn and autumn corn, and right now is the time for spring plowing, so spring corn planting is also a period that farmers care about quite a lot. So when is the right time for spring corn planting? What should be paid attention to? Let's take a look at the detailed introduction.
1. Spring planting time
Corn seeds begin to germinate at 6-7 degrees, but the germination speed is relatively slow, and they are also highly susceptible to damage from pathogens and pests, so planting generally begins when the ground temperature at 5-8 cm below the surface is 8-10 degrees. In spring, the temperature rises relatively quickly, and the optimal planting window is only about 10-15 days, so planting must be done at the right time. Planting too late may cause the seedlings to remain green and mature late, and they may suffer reduced yields when they encounter low temperatures. In general areas, the corn planting time is from mid-to-late April to early-to-mid May.
2. Sowing depth
When sowing, pay attention to the sowing depth. Whether by manual sowing or mechanical sowing, the sowing depth is required to be between 3-5 cm. If the soil moisture is good, the sowing depth only needs to be 3 cm. If it is sown too deep, the seedlings will emerge relatively slowly, and because they consume a large amount of nutrients when emerging, the seedlings will be weak, so the sowing depth must be well controlled.
3. Water in time
After sowing, the crop should be watered appropriately. After watering, water should not accumulate in large amounts on the surface. Too much watering can easily form standing water in the field, which will cause the seedlings to emerge slowly, and after emergence the seedlings will also turn yellow; in severe cases, it will cause a large number of missing plants. Therefore, watering must be appropriate. Flood irrigation is not advisable, and the amount of water used in a single watering should not be too much. Keeping the soil moist is enough. If rainy weather occurs after sowing and before emergence, drainage measures should be taken to avoid standing water in the field.
4. Uniform sowing
When sowing, sowing should be uniform and consistent, so as to avoid uneven emergence in each row. Some rows grow sparsely, wasting plot space, while some rows grow densely, with seedlings competing with each other for water and fertilizer and growing thin and weak. Therefore, sowing must be uniform. Without wasting land resources, appropriately dense planting should ensure that the seedlings grow robustly.
The above is an introduction to spring corn planting time and precautions. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.