What is the detailed growth of corn?

1. Seedling stage: The period from seed emergence to jointing is the vegetative growth stage of corn rooting, leaf growth, and differentiation of stem nodes. The central task of field management during this period is to ensure that all seedlings are sown, the seedlings are full and the seedlings are even, and the greatest efforts are made to promote the growth of the root system, cultivate strong seedlings, and form a high-yield framework with deep roots and lush leaves.

2. Spike stage. It refers to the flowering of corn from jointing to male ears, also known as the stage of vegetative growth and reproductive growth. This stage not only has the vigorous growth of roots, stems and leaves, but also the rapid differentiation and development of male and female ears, which is the most vigorous growth and development period in the life of maize, and it is also the key period to determine the number of ears, the size of ears and the number of grains per panicle.

Promoting the vigorous and developed root system, thick stems, wide and dense leaves in the middle, and rapid sealing were the central tasks of the management of Tianchang Conghua during this period. 3. Flowering stage. From the flowering of the male panicle to the maturity of the grain, it is also called the reproductive growth stage of the eggplant.

The grain yield of maize is mainly formed by the light table products at this stage. Strengthen field management, ensure fertilizer and water, Baoxiang Xun verifies normal flowering, pollination, and fruiting, maximizes the area of green leaves, prolongs the filling time, prevents disasters and falls, and strives for more grains, large grains, full grains, and high yields are the central tasks of this stage.

Yuda rice is suitable for growing in a warm and humid environment, and the suitable temperature is between 25-30 degrees.

The best germination temperature of its seeds is about 28-35 degrees, and the suitable temperature of the flowering period is about 25-26 degrees.

Corn is a short-day plant, when breeding corn, if the light time is too short, it will cause the growth rate of the plant to become slow, so that the yield of corn becomes low, it is necessary to plant corn on sunny soil, so that it receives 8-10 hours of natural light every day to promote the healthy growth of corn.

Corn plants are higher, the demand for water is more, its most suitable precipitation is between 410 mm and 640 mm, when breeding corn, if the water is insufficient, it is necessary to water the plant, so as not to dry up the corn, and in the rainstorm season, to discharge the water in the soil for the corn.

Precautions for corn planting

Generally, the sowing depth of corn is about 3-5 cm, if you want to cover your head and water later, you only need to sow about 3 cm. Sowing too deep will cause seedlings to emerge too slowly or weakly, and too much watering will cause poor seedlings or lack of seedlings.

The amount of phosphorus and potassium fertilizer applied to corn sowing is about 10-20 kg per mu, and the seeds and fertilizers should be sown in staggered rows, generally about 5-7 cm apart. If you do not water in time after applying chemical fertilizer, it is easy to cause seed burning, resulting in serious seedling shortage. Watering should be appropriate, too much will lead to water accumulation in the field and affect the emergence of seedlings.

How long is the growing season of corn.

The growth cycle of corn is about 100 days, but this time is not fixed. It changes depending on the local climate and corn variety. For example, the growth cycle of early-maturing varieties is 80-100 days, medium-maturing varieties are 100-120 days, and late-maturing varieties are 120-150 days.

The growth of corn goes through three stages: seedling stage, ear stage, and flowering stage. The plants will be planted around April 20 and harvested in October.

The growth process of corn.

1.Seedling stage: corn seeds are buried in the soil, seedlings grow in about 6 days, and then they begin to joint, and the roots, leaves, and stems are differentiated.

2.Panicle stage: The panicle stage refers to the jointing stage to the heading stage.

During this period, vegetative growth is relatively vigorous. It is necessary to fertilize the plant in time to promote the enlargement of the leaves and make the plant large and multi-spike. 3.

Flowering-Grain Stage: During this period, the leaves of the corn are all gone, and the plants should be protected from damage.

Maintenance and management of maize during the growing period.

1.At the seedling stage of maize, measures such as field investigation, seedling replenishment, seedling thinning, and weeding should be taken. The main purpose is to make the seedlings robust and uniform.

2.Top dressing is required at the jointing stage of corn. At this stage, the plant's demand for nutrients and water is very high, and about 70 kg of urea per mu is topdressed.

3.Measures such as drainage, emasculation pollination, and emptying of stalks were mainly taken at the grain stage of maize.

Corn is a relatively common crop, which is widely planted in our country, and the fruit generally matures in August and September, and is a delicacy on the winter table. Many people have only eaten corn, but they don't know how it grows; The life of corn starts from the sowing stage, and goes through the seedling stage, the ear stage, the flowering stage, and then the maturity period of harvest.

The whole process of corn growth.

1. Sowing period.

The sowing period is from the time the corn seeds are sown to the time when the seedlings have grown 2 or 3 leaves. The sowing date of corn is not very dependent on the variety, and the difference is a few days at most, mainly affected by weather and moisture. Sowing to seedling emergence is normally half a month, but sometimes the rain is not enough, and the weather is relatively dry, which affects the budding time.

2. Seedling stage. <>

The seedling period is the period when the corn seedlings grow tall, mainly from the seedling to the jointing stage, this time period is full of light, the rain is abundant, and the fertilization is timely, the corn root, leaf, and stem node differentiation is completed better, at this stage, we should pay more attention to whether the corn seedlings are consistent, the stems and branches are strong, and the corn seedlings with uniform height and thickness are cultivated.

3. Spike stage. <>

The ear stage is the most important period in the growth process of corn, and it is the stage when plant growth and reproductive growth go hand in hand. During this period, the male ears of corn seedlings are about to bloom after jointing, so they should be quickly closed and managed, because this period determines the harvest of corn this year, and the number of corn ears, the size of the ears, and the number of grains are formed at this time.

4. Flowering stage.

The flowering period of corn is what we say, flowering and long grains, if the fertilizer and water in this period are sufficient, and there is strong sunlight, the corn will bloom more, and the grains will be full. Therefore, the main work during this period is to weed, water, fertilize and ensure high yields.

5. Maturity period.

The maturity period of corn is the last stage of corn life, this stage arrives, it means that the harvest is about to begin, how to judge that the corn is fully ripe, it is necessary to look at the bracts outside the ears and the leaves of the corn plant. The bracts are completely yellow, some loose, and the leaves of the corn plant are still 1 or 2 green, indicating that the corn cob is ripe and ready to be picked.

Conclusion: The life of corn is relatively short, from sowing to harvesting is only about three months, and there will be 5 processes in the middle.

1. Temperature. Corn is a temperature-loving crop and requires a higher temperature throughout the growth period. The biologically effective temperature of maize is 10.

Seed germination requires 6-10, less than 10 germination is slow, 16-21 germination is vigorous, the optimal temperature for germination is 28-35, and germination is stopped above 40. Seedlings can tolerate short-term -2---3 temperature. The jointing stage is required to be 15-27, the flowering stage is required to be 25-26, and the filling stage is required to be 20-24.

Different corn varieties have different requirements for temperature, and the accumulated temperature of early-maturing varieties in China is 2000-2200; medium-ripe varieties 2300-2600; Late maturing and 25oo--28oo (3000). Most of the world's maize producing areas are concentrated in the range of 21-27 isotherms in July and 120-180 days of frost-free period.

2. Illumination. Corn is a short-day plant that can flower and bear fruit under short-day conditions (8-10 hours). The spectral composition has a great influence on the development of maize, and it has been studied that short-wave maize such as blue grows fast during the day, and develops fast in the morning or evening with long-wave light such as red.

Maize is a C4 plant, with strong photosynthetic ability, high saturation point of light, and the photosynthetic intensity of maize is generally 35--80mgCO2 dm2·leaf·hour.

3. Moisture. Corn has a tall plant and a large leaf area, so it also requires more water. The optimal precipitation during the growth period of maize was 410-640 mm, which affected the yield and quality of maize during drought.

It is generally believed that the area below 150mm in summer is not suitable for planting corn, and excessive precipitation affects the light, increases diseases, lodging and weed damage, and also affects the improvement of corn yield and quality. Although maize requires more water, the relative water requirement is not too high, and the transpiration coefficient is 240-370, which is lower than that of barley (280-400), oats (340-500), purple flower shouqing (831) and clover (797), and the water consumption is more economical. Corn has a strong root system that relieves the soil with sufficient moisture.

When the temperature is high and the air is dry, the leaves curl upwards to reduce the transpiration area and make the moisture absorption and transpiration properly balanced.

4. Soil. Corn is not very strict with the soil. The soil is loose, the soil is deep, and the organic matter is rich in chernozem, chestnut and sandy loam, and corn can be grown in the range of 6 to 8.

Corn seedlings can grow in the soil, which is greater than plant death. Corn plants contain 16 elements, except for C, H2O2, which come from CO2. and both are absorbed from the soil.

The large quantities required were N, P, K, S, CA and mg, and the smaller quantities were fe, mn, zn, cu, ba and cl2. From 10 days before tasseling to 25-30 days after tasseling, maize has the fastest material accumulation and the most fertilizer absorption, and this stage absorbs 70-75% of the total fertilizer absorption N, 60-70% P and 65% K. Each 100 kg of corn grains needs NI 75-2 22kg, H2PO40 59--0 85kg and.

The ratio of the three elements is: 1:2.

Bury the seeds in relatively humid soil, if the outside temperature is higher than 8 degrees, the moisture content is about 60%, and try to provide a suitable environment, so that young shoots can grow quickly.

After planting the seeds, if the environment is suitable, young shoots will grow in about a week, and small shoots will break through the soil. The newly grown shoots are pale yellow, and after a while they are exposed to the sun and grow, they will turn green and begin to grow upwards in stages.

After about two months, the corn will begin to bloom and grow filaments, and male pollen will also appear, which will be more conducive to fruiting.

Soon after flowering, the male and female fertilize and the cob gradually grows, and its filaments gradually fall off. In addition, it has a firm rind that wraps around the fruit and retains moisture.