Will transplanting after the seedling age stage affect the growth of rice?

It will affect the survival rate of rice seedlings.

After a certain age of rice seedlings (generally rice seedlings according to the variety, region, climate, environment, etc., the whole seedling period is generally about 25 40 days. The subject did not say how long the seedling age exceeded), the stalk is stiff and stiff, and the seedlings have been longer than the normal long growth period, and the leaves are slightly wider and longer than the normal length of the seedlings. It has entered the normal growth period, not the seedling support period.

During the planting operation, its stalk is easy to break, after planting because it is the first planting, its roots are not deep (raw), the grip is not firm, its leaves are long and large, the stalk is high, it is easy to break and fall when it is windy, and it is easier to cause"floating roots", thus causing the depletion of rice seedlings.

Rural planting will definitely affect the growth of rice after the seedling age. Rice seedlings that are too old will cause seedlings to head early. Each seedling age was sown at different periods and planted at the same time, and with the extension of seedling age, the regreening period of seedlings was extended accordingly.

Yes, because the planting time of rice is very important, once the planting period has passed, then transplanting rice will affect its growth.

Rice seedling age is crucial for rice, and farmers should be proficient in this knowledge.

It will affect the survival rate of rice seedlings, and rice seedlings will be affected after a certain seedling age (generally according to the variety, region, climate, environment, etc.). The whole seedling period is generally about 25 to 40 days, if the stem hairs are relatively hard, it is longer than the normal growth period of the seedling, and the leaves are slightly wider than the normal length of the seedling. It has entered the normal growth period, but it is not the seedling stage.

In the planting process, its stem is easy to break, so, after planting, because it is the first planting, the root system is not deep, the grip is not firm, the leaves are long and large, the stem is high, and it is easy to break and fall in the wind, which is easier to sell to cause floating roots, and the rice seedlings are exhausted.

Under natural light, rice grows normally. When the natural light is 50%, the rice grows slowly. If the light intensity drops to 5% of the natural light intensity, the growth of the rice will stop or even die.

All green plants, such as rice, are produced in sunlight, which is also the process of making nutrients. Rice requires a lot of water to grow. When water ** is insufficient, the physiological function of the plant decreases.

In particular, now is the tillering period of rice, which is the peak period when rice needs water, so there is no shortage of water.

Therefore, it should be remembered that shallow irrigation can now be an aquifer of 3-5cm, which cannot submerge the rice core, and in agricultural production, late planting or old seedling planting due to crop contradictions, lack of water, lack of labor and other reasons occurs from time to time. For such plots, it is necessary to strengthen the management of fertilizer and water, promote the early growth and rapid development of rice, and also achieve a good harvest. Increase the number of seedlings per hole to ensure the number of effective ears.

The application of slow-acting nitrogen (urea) in basal fertilizer and top dressing is changed to available nitrogen, ammonium bicarbonate takes 4-5 days from fertilization to be absorbed and utilized by rice, while urea takes 7-10 days, it can promote the early growth and rapid growth of rice, rice transplanting is an important part of planting high-yield rice, many people are concerned about rice transplanting, when to plant rice is also a controversial topic.

will affect. After the transplanting seedling age has passed, it is not resistant to wind, and the tillering is less, and the yield is affected.

After the seedling age stage, it will affect the growth of rice in the mountains.

Excessive seedling age will affect the rejuvenation and tillering of rice, shorten the growth period of Honda, and reduce the yield. Tease.

Passing the zero stage of rice will affect the growth of rice.

After the seedling age, it will affect the growth of rice, and it is very important to transplant rice in time.

It will affect the growth of rice, because after the seedling age will be affected by the weather of Ziyan, if the temperature of the jujube rock gradually becomes cooler, the growth and maturity of rice will gradually slow down.

Rural rice transplanting is strictly controlled by time, and if the seedling age period is exceeded, the growth of rice will be affected. It can even lead to poor seedling growth or death.

Rice yield is composed of four factors: effective panicle, total grain sell-off number, seed setting rate and 1000-grain weight. Therefore, although rice varieties and cultivation techniques are ever-changing, but the production is to seize the number of ears, the number of solid grains and the weight of 1000 grains, and coordinate the development of various factors, rice production has a common management process, which is divided into five management periods: seedling raising, transplanting, returning to green and tillering, jointing-long spike, heading-fruiting, and the following is an introduction to the precautions during the seedling raising period.

There are many ways to raise seedlings, but there is only one purpose, which is to cultivate strong seedlings to lay the foundation for the formation of high-yield seedling frames. The criteria for splitting the base are strong roots, thick stems, green leaves, and strong resistance to stress.

1) Do a good job of seed treatment before sowing. After drying and sterilization, the seeds used are pure, full, disease-free and vigorous. Drying seeds is generally enough for 1 2 days, and it is necessary to spread thinly, turn frequently, and dry thoroughly.

The poison of socks is mainly soaked with strong chlorine and other agents, which can prevent seed-borne diseases such as seedling disease and bacterial base rot.

2) Master the technology of soaking and germination. The key is temperature, and its principles can be roughly summarized as: heat preservation and whitening (chest breaking), temperature and root promotion, moisturizing and germination, and cooling exercise.

Seedling raising techniques such as dry seedling raising and machine transplanting have been simplified, and there is no need to promote germination, and sowing can be done when it is white. Rice yield is composed of four factors: effective panicle, total grain number, seed setting rate and 1000-grain weight.

3) Determine the amount of seeding. This is the key to cultivating strong seedlings. The sowing amount should be determined according to the appropriate seedling age, the temperature of the seedling raising period, the characteristics of the variety and the requirements for the tillering of the seedling field.

Generally, the long seedling age should be sparsely sown, the high temperature during the seedling raising period should be sparsely sown, the seedling field with more tillers should be sparsely sown, the hybrids should be sparsely sown than the conventional varieties, and the indica rice should be sparsely sown than the japonica rice varieties.

4) Strengthen the management of seedling fields. That is, according to the growth characteristics of seedlings, corresponding measures should be taken to promote the healthy growth of seedlings. It is necessary to regulate the relationship between water and gas, promote the growth of the root system, and do a good job in refining seedlings to improve the ability to resist stress; At the same time, weaning fertilizer and dowry fertilizer should be applied.

Weaning fertilizer is generally applied before 2 leaves and 1 heart, and dowry fertilizer is applied 5 days before transplanting. Water-raised seedlings should be sprayed paclobutrazol to strengthen the seedlings.

5) Prevent rotten seedlings. Rotten seeds and rotten buds occur before the "present green", and dead seedlings occur after the "present green", especially in the second and third leaf stages, and the phenomenon of green wilt and yellow wilt dead seedlings is more serious. Corresponding countermeasures should be taken for the cause of death, focusing on prevention and combining prevention and treatment.

It is necessary to pay attention to the growth of rice, the need to pay attention to the protection of rice, the need to pay attention to the deworming of rice, and the need to pay attention to the growth of rice by observers.

In the growth and seedling raising period of rice, it is necessary to pay attention to fertilization, and water release, and the amount should be well controlled, otherwise there will be excess nutrition.

When planting, a bucket of Qing is determined to choose the soil is more fertile and wide land, and in the fertilization must use farmhouse fertilizer, do not use the fertilizer bought outside, but also often water the plant bend, but also to prevent the occurrence of pests and diseases, if there is a situation of small insects, then be sure to spray insecticides in time.

Rice in the growth and seedling raising period of the cluster pure, need to pay attention to the quality of sowing, the most section of Zheng and Jia sowing trace seed period, sowing density, soil permeability, fertilization, but also to do a good job in the prevention and control of pests, rodents.

Summary. Answer: Hello kiss What is the only reason for rice transplantingWhat is the only reason for rice transplanting is to prolong the growth time and obtain higher yields, in fact, rice can be sown directly in the ground, but due to the relationship of accumulated temperature, the yield per mu is usually not high, so the previous farmers used to plant rice in the way of transplanting, that is, seedling transplanting.

However, due to the development of agricultural technology, the viability of seeds is getting stronger and stronger, so today's rice is basically live broadcast, and only a few elderly people still adhere to the habit of transplanting rice.

Answer: Hello kiss What is the only reason for rice transplantingWhat is the only reason for rice transplanting is to prolong the growth time and obtain higher yields, in fact, rice can be sown directly in the ground, but due to the relationship between the accumulated temperature and fluid, the yield per mu is usually not high, so the previous farmers used to plant rice in the way of transplanting, that is, seedling transplanting. However, due to the development of agricultural fiber property technology, the viability of seeds is getting stronger and stronger, so today's rice is basically live broadcast, and only a few old people still adhere to the habit of planting seedlings.

1. Because rice needs space for panicling, it is necessary to plant seedlings at the rotten chain panicle stage. Transplanting alone can give the small seedlings a certain space to grow, so that they can grow sufficiently. 2. The weeds will be removed when transplanting, which avoids the problems of more weeds, low germination rate, low root system, and low overall yield.

3. The spacing between transplanting seedlings is uniform, and the rice has good wind resistance and is easy to manage. 4. Transplanting rice can save time, and the early rice of double cropping rice can be raised for late rice when it is not harvested, and when the early rice is harvested, the seedlings have grown well, and they can be transplanted immediately. 殺殺

The first step in propagating rice is to prepare the land and fertilize it, rather than drying or transplanting the rice, so as to create a soft and fertile environment for the rice to grow. When preparing the land, the debris in the paddy field should be cleaned up, and then soaked and germinated, seedling transplanting, weeding and insect control should be carried out after the bottom fertilizer is applied. Before sowing seedlings, it is necessary to select seeds with full particles, no damage and no insect pests to dry for 2-3 days to eliminate the bacteria attached to them, and then do disinfection treatment to further reduce the number of pathogens.

First, the first step in rice propagation is to plant seedlings

1. The first step in propagating rice is not to dry seeds, nor to transplant seedlings, but to prepare the land and fertilize it, so that the rice field can reach a soft and fertile state.

2. When preparing the land, it is necessary to clean up the debris and larger soil blocks in the paddy field, and then carry out soaking and germination, seedling transplanting, weeding and insect control, top dressing and water control, harvesting and drying after applying enough base fertilizer.

3. Before sowing, the seeds with full particles, no damage to the appearance, and no insect damage should be selected for seedling, and then the seeds should be dried for 2-3 days to eliminate the bacteria attached to it, and then disinfected to further reduce the base number of pathogens.

4. After disinfection, seeds can be sown into the paddy field, and the sowing depth should be half exposed to the ground, so that the seedlings can grow neatly. After the seedlings break the soil, transplant and plant at a suitable time.

Second, the growth process of rice

1. Seedling stage.

1) Sow seeds into the soil, when the conditions are right, the seeds will pull out the radicle, and then grow upward.

2) At this time, the seedlings are in the elevation stage, and the leaves have not yet appeared, and the nutrients in their bodies are mainly the nutrients absorbed by the roots from the soil.

3) After the leaves are grown, the plant can synthesize nutrients through photosynthesis.

2. Tillering period.

1) From transplanting to continuous jointing of seedlings, this stage is the tillering stage.

2) The root system of the seedlings will be damaged after transplanting, and it will take about 5-7 days to recover.

3. Heading period.

1) The seedling from the beginning of jointing to the growth of young spikes is the heading period, which takes about 30 days, which is the critical period of growth.

2) Rice ears are generally extracted at a later stage, with an interval of about 5-7 days.

4. Fruiting period.

1) The newly extracted rice ear is still in a shriveled state, that is, it is not full, and the stem will grow and rise from flowering to the maturity of the grain, and then the Hengzi will open its flowers and produce grains.

2) This stage will affect the yield of rice, and appropriate fertilizer application is required.