Why do you need to dry the field when planting rice? What is the purpose of the sunbath?

Drying in paddy fields can reduce ineffective tillering.

Promotes the accumulation of nutrients and the formation of new roots. improve the growth environment of rice, improve soil nutrient use efficiency, and control diseases and pests; Promote tillering and spike formation and cultivate large cones.

Inhibit ineffective tillering and achieve a smooth transition from asexual growth to reproductive growth. Promote rice root growth, root resistance and disease resistance. It can promote the rapid death of exogenous tillers, so that nutrients can be effectively concentrated and accumulated.

<> drying of paddy fields can reduce ineffective tillering, promote the transition from asexual growth to reproductive growth, and increase rice yield. At the same time, it is also conducive to field ventilation and improves the plant's resistance to diseases and insects. Rice field drying can control and reduce ineffective tillering, promote nutrient accumulation, and promote and realize the transition from asexual to sexual growth.

Rice in the tillering stage, not the more tillers, the better, there are a large number of ineffective tillers, and the normal tillering has a great demand for water and nutrients, and through field drying, the occurrence of ineffective tillering of rice can be inhibited, and then the rice grows downward, which is conducive to the growth of the root system, which is not only more conducive to the transmission and absorption of water and nutrients, but also improves the ability to resist roots.

Rice sunshine is also conducive to inhibiting the growth and spread of weeds in the field, reducing weeds in the field, and facilitating the ventilation of the paddy field. At the same time, it reduces the competition with rice for water and nutrients, which is conducive to the normal growth of rice. Another point is that the reduction of weeds in the field also reduces the occurrence of serious pests and diseases to a certain extent.

Paddy field drying is one of the main technical measures to improve rice yield and promote early maturity. It can improve the soil environment, control ineffective tillering, control field temperature, and reduce diseases. Drying in the field can control ineffective tillering and consolidate effective tillering.

Exposure to the sun can improve the soil environment and enhance root activity. Drying in the field can coordinate clone growth and germline growth. Drying the field can reduce the temperature of the field and inhibit the harm of pests and diseases.

The purpose of drying rice in the field is to prevent the seedlings from continuing to grow, which is conducive to the ventilation of the seedlings and improves the yield.

It can help to disinfect and sterilize rice fields. The purpose is to make the field develop better, make the nutrients in the field more abundant, supplement the nutritional value of the field, and improve the utilization rate of the field.

The purpose of drying the field is to increase the oxygen of the soil, avoid some bad trace organisms in the soil, and add some nutrients to the rice. The purpose is to promote the absorption of the roots of the rice and make the roots of the rice stronger.

It can reduce the excessive and rapid consumption of nutrients in the field and increase photosynthesis. Make the rice grow robust and eventually increase the yield and harvest.

Rice drying field must have a suitable time period, too early or too late can not play the meaning of drying the field, and even may play the opposite role, under normal circumstances, the time period of rice drying field should be determined according to the total number of stem tillers per mu in the field, when the total number of stem tillers per mu in the field reaches 75%-90%, it is the best time period for drying the field, some people say that the field is in the tillering period, the budding period or the rest of the growth period, such a statement is actually to be judged according to the total stem tiller number, for example, there are many types of rice, There are some species with very strong tillering strength, and for such farmland, it is reasonable to dry the field early.

Rice drying method:

1. The time period of rice drying in the field.

The time period of rice drying is not fixed, it must be judged according to the actual rice field, such as the seedling length of rice seedlings, local weather conditions, rice field fertility, etc., 3 days, 5 days, 7 days, etc.

2. Rice drying should be reasonable.

Although the field is conducive to the growth and development of rice, but to be reasonable, if the field is too much, is not conducive to the growth and development of rice, in the link of drying the field, we should follow the basic principle of more exposure and light sunning, the process of first exposing the field and then drying the field, observing the rice in the field, if it is soaked in water for a long time, the roots have produced blackening, it is necessary to immediately drain the field, dry the field, let the rhizome breathe oxygen, and promote new roots.

3. Light sun and heavy sun.

If it is a rich paddy field, the rice seedlings have been vigorous, and it can be reasonably re-sunned, on the contrary, if the seedlings are short in the paddy field, it can be reasonably lightly sunned.

After drying the field, it should be rehydrated immediately, and according to the seedling condition and seedling length of 1 mu of topdressing fertilizer 2 3 kg, until the heading will not stop the water again, to promote the jointing of rice booting stage.

The time of drying the field should be well controlled, otherwise it will affect the yield of rice.

Generally, the most suitable month is June and July every year, when the temperature and climate conditions are very suitable. First of all, we should follow the principle of looking at the sky, the ground and the seedlings, and the drying time is generally controlled at 5 7 days, and then speculate according to the degree of development of rice, and at the same time timely top dressing and rewatering.

Generally, around August will be chosen, because the temperature is the highest around August, and it is best to dry the field under the right temperature, and it is very dry and full.

Drying the field, also known as roasting the field, shelving the field, and falling dry, is a technical measure in rice cultivation. This can enhance lodging resistance and improve seed setting rate and grain weight, so when is the best time for rice to dry the field? What should I pay attention to?

When is the best time to dry rice?

The best time for drying rice is from June to July every year, that is, at the end of tillering and the beginning of jointing. Of course, the drying time is different for different planting periods, seedling conditions, soil types, water source conditions, etc. For example, the fields transplanted before May 15 should be drained immediately, and the transplanting before June 1 is expected to reach the standard of drying the fields on July 1-2.

In addition, the drying time is generally about 5-10 days, when about one-third of the plants in the field have been allocated, the field should be stopped and the dust should be stopped.

What should I pay attention to when drying rice?

1.Attention should not be excessive or insufficient, nor should it be re-sunned once, so that the tillering suddenly and rapidly declines, affecting the growth and robustness.

2.After drying the field, it is necessary to rehydrate in time to keep the field dry and wet, so as to facilitate the jointing and booting of rice.

3.If the seedling condition is not good, it can also be combined with 4 5 kg of urea per mu to facilitate rapid recovery of growth.

4.When is the rice drying field, the time of rice drying is introduced to you here, rice drying field, only by mastering the "heat", can we achieve the due effect.

5.The drying should be carried out during the period when the rice is not very sensitive to water response, that is, the period from the end of effective tillering to the beginning of internode elongation. Generally, when the number of effective tillers reaches the predetermined requirements, the field can be drained or dried naturally.

For paddy fields with soft and rotten soil and long and long-lasting Zen resistance, it can be carried out in other periods except after transplanting to the end of effective tillering.

6.For the old rice fields of saline-alkali soil, if the salt content of the cultivated layer has decreased significantly, it can also be lightly sunned, but it is necessary to be careful to prevent the return of salt caused by this. Paddy fields in cold areas should not be sun-dried after the differentiation of young panicles to prevent chilling injury.

Rice drying must be carried out at a suitable time, otherwise it will not only fail to increase the yield and enhance the ability to prevent lodging, but also have the opposite effect.

The best time for drying rice is from June to July every year, that is, the end of tillering and the beginning of jointing.

Pay attention to 1. Look at the growth of seedlings. The seedlings grow too vigorously, the leaves are long and the tail is bent, and the fields that are closed prematurely should be dried early and re-sunned. 2. Look at the change of leaf color of the seedlings of the grass bark.

All the leaves are black to be sunburned early, heavy sun, the lighter leaf color can be tung Zen late sun, light sun. 3. Look at the number of seedlings. If the planned number of seedlings is reached early, it can be dried early, and if the expected number of seedlings is not reached, the field will not be dried or only exposed.

Rice is most suitable for drying in late June to early July; It is necessary to pay attention to check whether the soil is fertile, loose and deep, and for the lodging of rice, it must be re-sunned, sunned, and paid attention to the time of drying the field, calling for three days, five days, and seven days, and when drying the field, it must be open to moderation, not excessive exposure.

From the late tillering stage to the early stage of spike differentiation, it is suitable for the sun-sliding and land-sliding period. If the drying of the field is not conducive to the growth of rice, the importance of drying the field is determined according to the specific growth of rice.

I think I need to grow it in the sun. Proper drying of rice before soaking and germination can increase the permeability of seed coat, help absorb oxygen and water, and can disinfect and sterilize, reduce the occurrence of pests and diseases, promote neat germination, and improve germination potential and germination rate.

The method of drying seeds is generally to stretch the seeds thinly on the mat or concrete ground, dry for 1 2 days, and roll frequently, so that the seeds are dry and humid consistent. Drying seeds can reasonably improve the survival rate and germination rate of seeds. The key factors depend on:

Drying seeds can promote the ripening of seeds and increase the activity of enzymes. After the rice seeds are obtained in the mu, although they are cleaned by drying and then entering the warehouse, but because the quality indicators and dry humidity are different, the relative humidity and temperature in the storage process will also change, if the seeds absorb moisture, photosynthesis becomes abundant, and the nutrients in the seeds are consumed more, which usually causes the seed germination ability to become weaker, and the germination rate is reduced. By drying seeds, the rapid permeability of the seed coat can be improved, so that it can absorb moisture evenly and improve the activity of enzymes when soaking seeds.

Drying seeds promotes the introduction of O2 into the seeds. O2, which must be dispersed for seed germination, is a prerequisite for the embryo to produce gibberellin or to change the gibberellin in fusion mode to the free state gibberellin. Gibberellin can induce the production of pepsin, catalyzing the reaction of tapioca starch into soluble sugars, which can be used for seed embryo aspiration and young roots, seedlings to produce new somatic cells.

Drying seeds can reduce the concentration of organic matter such as rice hull amine A, rice hull amine B, mineral pressure acid and fragrant hydrochloric acid, which has an inhibitory effect on budding when the content of this chemical is high. The medium and short wave light in the solar spectrometer, such as ultraviolet light, has the ability to sterilize, therefore, the sun-dried seeds have a certain antibacterial effect.

1.Improve the permeability of seed coats, remove carbon dioxide caused by them, digest and absorb O2 and water.

2.Disinfection and sterilization to kill pathogenic bacteria on the surface and reduce the occurrence of pests and diseases.

3.Remove the difference in water content between seeds, the water absorption rate is consistent, and the budding is neat.

4.Enhance the activity of strong enzymes, improve the germination potential and emergence rate of seeds.

There is no need to dry, because if it is dried, the moisture in it will be lacking, and many of them will not be able to reach the rooting conditions if they are planted again.

It is definitely necessary to dry the seeds, because only in this way will the rice be guaranteed to grow seedlings.

Before soaking this rice, I don't think it needs to be sun-drenched, because at this time the seeds need to be kept moist so that they can germinate.

Very important. Because in the process of rice planting, transplanting directly determines the survival rate of rice, and also indirectly affects the yield, so it is very important.

Yes, because transplanting is the process of planting rice, and the quality of transplanting technology directly affects the harvest of rice in the later stage, so transplanting is very important.

Yes, it is very important to plant rice in the process of planting rice, so that the rice seedlings can be planted in the land intact and waiting to grow.

Field management of rice planting is very important, such as fertilizer and water management, seedling management, etc., which affect the yield and quality of rice. Drying rice has many benefits for rice planting, which can improve the soil structure of paddy field, enhance the vitality of rice roots, promote seedling root rooting, control ineffective tillering, improve the panicle rate, and reduce the occurrence of rice diseases and pests. In the process of planting rice, there are many benefits to the field, which can not only improve the soil structure of the rice field, increase the vitality of the rice root system, so as to effectively promote the seedling root system to take root into the soil, but also can effectively control the ineffective tillering, improve the panicle rate, and reduce the occurrence of rice diseases and pests.

The purpose of drying the field is to artificially interfere with the characteristics of this stage of rice, so that the rice can grow normally and ensure the yield, so as to achieve the purpose of planting. Effectively control the number of tillers to ensure the efficiency of tillering. Rice generally begins tillering at the three-leaf stage, and after transplanting the field, the suitable growth environment and sufficient nutrition provide conditions for the rapid tillering of rice.

In this way, the paddy fields can become more nutritious. The advantage is that it can help rice grow better. It can prevent some diseases, it can do better photosynthesis, it can increase the growth rate of rice, but the disadvantage is that it can lead to drought in water resources, it can lead to water shortages, and it can also lead to malnutrition.

Drying rice is a key step in planting rice, it has a very important role in the growth and development of rice in the later stage, it can be said that there are many benefits, rice planting field, after slowing the roots, it begins to grow rapidly; At this time, its biggest feature is that the growth is vigorous, and the total number of heading has increased dramatically, which has laid a solid foundation for the later production; However, there is an advantage and a disadvantage, and if this situation is not properly managed, it will lead to potential harm to the normal growth and yield of rice in the middle and late stages.

The effect of drying the field is to artificially carry out intervention according to the characteristics of this stage of rice, so that the normal growth of rice and the yield can be guaranteed, so as to achieve the effect of planting. Drying the field is an important control measure in the process of rice planting. According to the human factors, the soil moisture content of paddy fields should be controlled, and the living environment of suitable drought should be created by human factors, so as to control evil, control prosperity, strengthen roots, prevent diseases, improve soil physical and chemical conditions, reduce excessive base fertilizer and save water, increase yield and income, increase yield and improve quality and efficiency.

Generally speaking, if conditions permit, it is best to carry out 1-2 times of drying the whole process after the rice enters the peak heading period. Strong roots, anti-lodging.

The cultivation of crops is not so much the cultivation of crops as the planting of roots. Because the growth, yield, quality, drought resistance and so on of crops are closely related to the growth of the root system. The more developed the root system, the more robust the crop growth, the more prominent the harvest level, and the higher the drought resistance.

The same is true for rice, because the root system is in a flooded and anoxic environment for a long time, which will have a calculated inhibition effect on the growth of the root system. According to the drying field, the excess water on the field surface is discharged, so that more gas is added to the cracks of the soil layer, so that the root system can also "breathe through the wind", which is very beneficial to the growth of the root system. If the root system grows well, the lodging resistance will be improved.

On the premise of increasing the air content of the soil layer, it can reduce the harmful substances of oxidation, improve the activity of good-tempered microorganisms, promote the acidification of organic matter, and then improve the efficient nutrient content of the soil layer; From the perspective of rice growth, drying the field can control the growth rate of nutrients and promote the accumulation of carbohydrates, so that more nutrients can be given to the early stage of rice panicle decomposition, and the growth and development of nutrients after rehydration can be well achieved.