What are the processes of rice growth?

(1) Seedling stage

May 1 May 15

The seedling period is to sow the seeds of rice into the seedling tray, in the case of suitable growth conditions, the seeds will be extracted from the radicle, grow up and emerge from the soil, this time is the stage when the seedlings begin to pull up, before the leaves do not grow, it is by absorbing the nutrients in the soil by absorbing the roots, and after the leaves grow, not only through the roots to absorb, but also through the leaves to absorb light and convert into nutrients.

(2) Rice transplanting period

May 15 May 20

After the seedlings are raised, it is time to transplant the seedlings, and at this time, the farmers will transplant the seedlings to the field, which is more conducive to the large-scale planting and growth of rice.

(3) Tillering period

May 20 May 30

After the seedlings have grown for a period of time, they are transplanted, and the stage from transplanting to continuous jointing is called the tillering stage. Because after transplanting, the root system will be damaged, and it will take a while to recover, and it will take about 10 days to recover, tiller, and grow more leaves and roots.

(4) Jointing period

June 1 July 30

The jointing stage is the most important growth process of rice, in this process, the rice seedlings are jointed and grow, growing taller and stronger, and it is accompanied by stem or internode elongation until the final spikelet differentiation.

(5) Heading period

August 1 August 15

The heading stage refers to the process of growing rice ears in the seedlings, and the moment the tip is pulled out of the flag leaf sheath marks the beginning of the booting stage. The panicles continue to elongate until they are mostly or completely withdrawn from the leaf sheath.

(6) Flowering period

August 15 August 31

The flowering stage is the process of fertilization of the stamens and pistils of rice, in the heading stage, the grain grains are hollow, and after the fertilization of the flowers, the seeds are formed in the grains of the rice ears, that is, the last rice we eat. So if the flowering process is not good, the yield of rice will be very low.

(7) Fruiting period

September 1 September 20

The fruiting period is rice paddy.

The most important stage of ripening, when the weather is at its best and hot and dry, with plenty of sunshine, helps the seeds to ripen. Gradually, from the milky maturity stage to the wax maturity stage, and then to the late maturity stage, finally the rice is fully ripe.

(8) Harvest period

Mid-Autumn Festival during the National Day

Generally speaking, in the Northeast, it takes about 4 and a half months for rice to be planted and harvested, and during the Mid-Autumn Festival to the National Day, the rice will be fully mature, and the harvest period will begin. Immediately after harvesting, it is threshed, dried, and milled to become the freshest rice.

To go through the stages of planting, germination, growth, and maturity, rice is a very important crop in our country, this kind of thing can fill people's stomachs and make delicious food.

The vegetative growth stage of rice refers to the growth of roots, stems and leaves of the vegetative organs of the plant

The stage is generally from seed germination to the pre-spike differentiation of the young version, which includes the seedling stage, tillering stage and jointing stage. The seedling stage generally refers to the period from the emergence of the seed to the time before transplanting. According to the different tillering time and speed, the tillering period can be divided into the beginning of tillering, the peak tillering stage, the highest tillering stage, the end of effective tillering and the end of tillering.

The number of tillers increases slowly at the beginning and the number is small, which is called the beginning of tillering. With the increase of rice plant assimilation, the growth is vigorous and the tillering speed is accelerated, which is called the peak tillering stage. When the number of tillering stems increases rapidly and reaches the highest number of tillers, it is called the highest tillering stage.

After the highest tillering stage, the number of tillering stems increases slowly, and some of the tillers die, and finally reaches a stable value, which is called the end tillering stage. Before the arrival of the highest tillering period, there is a period when the number of stem tillers reaches the same as the number of stem tillers at the end of tillering, which is the effective tillering termination period. Not all the tillering of rice plants can form panicles, only effective tillering can form panicles, and the number and size of panicles determine the yield level per unit area.

Therefore, in rice production, it is necessary to appropriately apply promotion and control measures to strive for more effective tillering and avoid and reduce the occurrence of ineffective tillering. Generally, before the end of effective tillering, it is necessary to adopt promotion measures to strengthen water and fertilizer management, promote early growth and rapid development, so as to increase the number of effective tillerers, and after the termination period of effective tillering, control measures should be taken to drain and dry the field, so as to inhibit the occurrence of ineffective tillering, which is conducive to the effective tillering to grow thick and strong, and lay the foundation for the formation of large spikes.

5 phases. Seedling stage, tillering stage, panicle differentiation stage, heading and flowering stage, and grain filling and maturity stage.

After answering the preparation of rice, we have several sowing methods to choose from, flower friends can choose according to their own ideas, one is live broadcasting, that is, directly bury the rice in the pot, the other is to soak the seeds first to promote germination, we usually soak in mid-May to promote germination and sowing, the rice in the Yangtze River basin is very suitable for soaking around mid-May, and the northeast is about mid-April. What needs to be explained to flower friends is that potted rice must be kept outdoors in the open air day and night, indoor maintenance is not good, good ventilation, good light can be, and the soil in the pot is very casual, and it can be soaked into mud with the potting soil of the flowers.

1. Soak the rice seedlings. 2. The rice planted in the pot can be seen to have grown. 3. Rice grows normally in flower pots, and flower friends need to pay attention to it and don't cut off the water. 4. The rice has been tasseled and is almost ready to be harvested.

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1. Seedling stage.

Collect rice seeds and then sow them into the soil. When the growing conditions are suitable, the seeds will pull out the radicle and grow upwards to emerge. This period is the stage when the seedlings begin to grow.

Before the leaves grow, they absorb nutrients from the soil through their roots. After the leaves grow, they are not only absorbed by the roots, but also converted into nutrients through the absorption of light by the leaves.

2. Tillering period.

The stage from transplanting to continuous jointing is called the tillering stage. Because the root system is damaged after transplanting, it takes a while to recover. After waiting for 5-7 days, the above-ground parts can be restored.

3. Heading period.

It usually takes a month from jointing to young spikes, which is the key to growth. After that, as it grows, jointing occurs every 5-7 days or so.

Fourth, the heading stage.

After jointing, it is still shriveled and does not have full fruit. Between flowering and grain maturity, the stems grow and pull up, flowering and producing slow, abundant grains. At this stage, it is necessary to determine whether the yield can be high, and it is necessary to pay attention to fertilization.

It is divided into 5 stages, which are divided according to morphological characteristics, mainly including seedling stage, tillering stage, heading and flowering stage, panicle differentiation stage and grain filling maturity stage.

I think that the growth of rice is divided into 4 stages, which are the seedling stage, the tillering stage, the heading stage and the heading stage.

The growth period of rice is divided into seedling stage, tillering stage, heading stage, irrigation stage, and maturity stage. These stages have a great impact on the growth of rice.

The rice growth period is divided into two stages. 1. Vegetative growth stage: The vegetative growth stage of rice is from the germination of rice seeds to the jointing stage of seedlings, which takes about 90 days, and this stage is divided into four periods, namely seedling stage, transplanting stage, tillering stage and jointing stage.

2. Reproductive growth stage: The reproductive growth stage is from booting to maturity, which takes 70 days, and it takes about 15 days from the beginning of breaking heading to the beginning of breaking the shell and flowering.

It takes about 20 days from the start of the filling to the ripening of the harvest. It is also divided into four periods, namely booting stage, heading stage, pollination stage, and grain filling stage.

The growth process of rice includes seedling stage, tillering stage, jointing stage, booting stage, flowering and pollination stage, and grain filling stage.

1. Seedling stage.

The seedling stage is the seedling stage when 50% of the rice field sprouts and the seedling stage is the seedling stage. The period from the very beginning of transplanting to transplanting and gradual growth is the transplanting period, and more than 3 days after rice transplanting, the seedlings are hearted and leafy, and new roots are rooted, which is the rejuvenation of rice.

2. Tillering period.

After the rice returns to green, the temperature slowly increases, the rice gradually tillers, generally the rice gradually tillering as the beginning of rice tillering, the rice tillering festival basically terminates as the tillering stop period, the rice tillering period can be divided into reasonable tillering period and failed tillering period.

3. Jointing period.

It refers to the period before the jointing period of rice, and during the jointing period of rice, it is necessary to do a good job in cultivation technology, which can effectively increase the number of panicles of rice and increase the rate of heavy panicles.

4. Booting period.

When the young panicle of rice opens the petiole it can be seen that when the fluffy spikelet travels to the land, the rice needs to enter the jointing stage, and the plant petiole can be seen to be a nodal protrusion. For some varieties that are prone to falling, chlormequat can be sprayed at this stage to manipulate the relative height of jointing. And it is better to use ear fertilizer in advance.

5. Pollination period of flowers.

It refers to the beginning of flowering to the gradual grouting of grains. Rice is particularly sensitive to drugs during the heading and flowering period, especially in the morning when rice is in full bloom and more intensive. Therefore, it is best not to spray chemical fertilizers.

6. It is a good grouting period.

Rice grain filling period refers to a period of time from the completion of flowering to the completion of the glume shell closure to the perfection of the grains, the exact time is different, such as the southern early rice, the grain filling period is more than 10-15 days, and the northern indica rice, the grain filling period has exceeded 40 days. <>

Environmental requirements for rice

1. Rice is a sun-loving crop, which has high requirements for light conditions, and the saturated light intensity of a single leaf of rice is generally about 3 to 50,000 lux, and the light saturation point of the population becomes higher with the increase of the area index. The increase of the area of light saturation point is conducive to the vigorous growth of rice.

2. Rice is a temperature-loving crop, the material flow slows down when the temperature is low, the respiratory consumption increases when the temperature is high, and the photorespiration of rice is enhanced under the condition of suitable temperature, which is conducive to the photosynthesis of rice.

3. The requirements for soil texture of rice are not strict, sandy, loam and clay can be planted, but the most suitable for millet production is the loam with deep soil layer, good structure and rich organic matter, and the fertile soil conditions can greatly improve the yield of rice.

4. The water requirement of rice in the whole growing season is generally between 700 and 1200 mm, and with the increase of humidity, photosynthesis gradually increases.