How to prevent corn seedling death? Keep these 4 measures in mind

Corn is one of the staple foods of northerners. Many people also love to eat it. But when planting corn, seedling death symptoms often occur easily. How should we prevent and solve this? Below, the Tuliu.com editor will take everyone to learn about it.

Measures to prevent corn seedling death

1. Do a good job of seed treatment

1. Seeds must be carefully selected

Do a good job of germination testing. The germination rate is generally not lower than 95%. Seeds whose germination rate has not been identified must absolutely not be used.

2. Use coated corn seeds to control underground pests of corn

(If corn seeds have not been coated, using chemicals to dress the seeds before sowing is a key measure to ensure full seedlings).

2. Improve the quality of cultivated land, and the plowing depth should be appropriate

Plots with high humidity are not suitable for plowing and sowing, because plowing soil with high humidity easily forms hard clods that are not easy to break up, and the tillage layer is also easily compacted. Therefore, it is necessary to grasp the suitable cultivation period and plow when the soil moisture is suitable. The depth of plowing should be determined according to soil properties, amount of base fertilizer, labor, and agricultural machinery and tools. --Generally, plots with heavy clay soil should be plowed deep, and plots with soft soil should be plowed shallow; plots with fertile soil, deep soil layers, and much base fertilizer should be plowed deep, while poor soil, shallow soil layers, and less base fertilizer should not be plowed too deep.

3. Complete matching agricultural machinery and tools to reduce mechanical compaction

For mechanical sowing, several machines and tools for plowing, harrowing, sowing, and covering should be matched as much as possible to complete several steps of operation at one time, reducing the number of times machinery travels in the field, thereby reducing excessive rolling and compaction of the plots.

4. Improve sowing quality

1. Keep sowing depth as consistent as possible.

Suitable sowing depth and consistent depth for corn are important links to ensure uniform and strong seedlings. Under normal conditions, the sowing depth should be 3-4 cm; when the temperature is low, humidity is high, and the soil is compacted, it should be shallow, and can be changed to 2-3 cm; sow deep on sunny slopes and ridges, and sow shallow on shady ditch slopes.

2. Sow at the right time and in the right amount, and thin seedlings in time.

Determine the appropriate sowing time according to the local climate, variety, and plot moisture. Determine the appropriate sowing amount according to the germination rate of the seeds and different sowing methods. -Generally, drilling uses 60 ky/hm', and hill sowing uses 25--37.5 kg/hm2. Do not sow too much, so as to avoid crowding the seedlings. Thin seedlings during the two-to-three-leaf stage, and set the seedlings at the five-leaf stage.

3. Press the soil in time after sowing, and loosen the soil to preserve moisture.

After sowing, when the soil is dry, it should be pressed in time; when the soil is relatively wet, supplemental pressing should also be done after the surface dries, so that the seeds are in close contact with the moist soil, meeting the seeds' water requirements for germination and facilitating emergence. This is especially important for plots with poor moisture, relatively large and numerous clods, and sandy loam soil, where pressing after sowing is even more important. If heavy rain occurs after sowing and before emergence, after the rain when the field dries, light harrowing and soil loosening should be done in time to break the hard surface crust, release moisture and allow air movement, and promote seedling emergence. Through pressing after sowing, the soil's moisture-preserving capacity is increased, which is beneficial to seed germination and is one of the important measures to ensure full seedlings, uniform seedlings, and strong seedlings.”.

4. Use chemical fertilizers and pesticides reasonably to prevent fertilizer burn or pesticide damage to seedlings.

Okay, the above are the measures brought to you by the Tuliu.com editor to prevent corn seedling death. To obtain high corn yields and increase farmers' income, it is necessary, according to the growth and development characteristics of corn, to do a good job of various cultivation technical measures during the sowing period, create good conditions for corn germination and emergence, and prevent the occurrence of physiological diseases. In this way, high and stable corn yields and increased farmers' production and income can be achieved. See you next time.