Corn seeds germinate in a few days

Under the most suitable conditions, corn seeds can germinate in 3-5 days. Due to the suitable temperature in summer, corn seeds can germinate in about 5-7 days after sowing. It takes a little longer to sow seeds in spring, and it usually takes about 7-10 to sprout and sprout.

What are the main conditions affecting corn germination?

1. Moisture content

Corn can germinate normally when it absorbs 48% to 50% of the dry weight of the seed. When the soil layer of 5cm to 10cm, the soil moisture is 60% of the maximum field capacity, it can meet the needs of seed germination. When the soil moisture is about 70% of the maximum capacity in the field, the emergence rate is high and the emergence rate is fast. When the soil moisture reaches more than 80% of the field capacity, due to excessive soil moisture and insufficient air, it is easy to rot seeds and affect seedling emergence.

two。 Temperature

Maize seeds generally begin to germinate at 6-7 ℃, but germination is very slow, easy to be infected by bacteria, and even rotten seeds lack seedlings; it is suitable for maize seeds to germinate at 10-12 ℃, the fastest at 25-35 ℃, and it is not conducive to germination when it is more than 40 ℃. Therefore, when the soil temperature of 5-10 cm soil layer is stable at 10-12 ℃, it is the suitable sowing time for spring corn.

The temperature has a great influence on the speed of seedling emergence. At 10: 12 ℃, seedlings generally emerged at 18: 20 days after sowing; at 15: 18 ℃, at 8: 10 days; at 20: 35 ℃ C, seedlings could emerge at 5: 6 days, and the emergence rate was the highest; after more than 40 ℃, the seedlings stopped developing.

3. oxygen

Oxygen is a necessary condition for seed germination. Corn seeds have large embryos, high fat content, and need more oxygen to germinate and decompose fat. In general, the oxygen content in the soil can fully meet the needs of maize seed germination. However, if the soil is too wet, or the sowing is too deep, or the soil is hardened in the rain after sowing, it will cause insufficient oxygen, prolong the emergence time, increase the consumption of nutrients, and make the seedlings thin.

4. Soil properties

Different soils have different effects on maize emergence. Compared with clay, loam soil is easy to emerge, and the emergence rate is high. Because of low soil temperature and high saline-alkali content in saline-alkali soil, seed absorption of water and other life activities are affected, and germination and emergence are slow. When the soil salt content reaches 0.6%, germination is very difficult.

Summary: the above content is for everyone to sort out the introduction of corn seed germination in a few days, hoping to help the needy partners.