How did the wild rice in the rice fields come about? Why are there so few of them?

Where did the wild rice in the rice fields come from? Why is there such a small number, the probability and cause of the occurrence are generally not fixed. Sometimes there may be several wild rice plants in certain areas, and in general, wild rice may occur as anti-ancestral or hybrid.

Sometimes it is also carried by seeds, and wild rice will occur in these cases. It is not very obvious in the paddy, and the quantity is also small. Generally, when the rice is about to grow, all these wild rice will be removed, because it will seriously affect the production of rice.

The ears of these wild rice are no different from normal rice, but these rice do not form rice when they are grown. Although it looks spectacular, the rice is less than ideal. There are many workers who use pesticides, but none of them are realistic.

Because the quantity of some wild rice cannot be eliminated by medicine, it can only be pulled out little by little by hand. Most of the wild rice in the rice fields is the ancestor of rice, which began to be domesticated in weeds and then cultivated. At the beginning, there is no difference between the shape and growth of rice, and the ability to conceal is also very strong.

The most obvious time is that the growing plant is taller, the rice ear is obviously much taller than normal rice, and there will be purple-red mango on the ear. It will affect the quality of other rice plants if it is more conspicuous, and in severe cases, it may be necessary to sprinkle the field with feed. In addition, weeds are extremely multiply, and if they are not pulled out, they will grow even more in the coming year.

The ability to reproduce is beyond imagination, and the harm is relatively great. <>

At present, there is no effective way to deal with wild weeds, after all, it is one of the ancestors of weeds. If the use of chemicals is ineffective, you can only use artificial, and a small amount can of course be unrealistic. The most important thing is to distinguish clearly before the heading, otherwise it is really too difficult to distinguish, and it will take a lot of time.

I believe that for professional farmers, there will also be ways to do a good job in field management, even if it is a large area, there will be manual removal.

There are several reasons for the low yield of wild rice in southern China: 1. Poor reproductive ability of wild rice; 2. The climatic conditions in southern China are not good; 3. People's awareness of wild rice is insufficient; 4. Farmers do not have a strong awareness of plant protection. At present, most farmers use fertilizers and pesticides directly from wild rice and use some chemical pesticides for planting, breeding and production, which is equivalent to suicide for wild rice.

On the one hand, because this plant can absorb all kinds of nutrients and water needed for rice growth, this is also the main reason why it can naturally form ripe fruits, and the soil environment in many areas of China is relatively harsh, and it is easy to form wild rice ripe fruits under such conditions. In addition, the reason why this plant can mature naturally is because the plant itself needs to "hibernate". If the temperature is low or the humidity is high in the southern part of our country in winter, it is difficult for this plant to sleep normally.

This will cause the plant to "hibernate" without nutrients, which affects the effective accumulation of nutrients by the plant itself to a certain extent.

This also has a lot to do with the local climate conditions, as we all know that the climate conditions in the north are colder than in the south. For example, in many areas of northern China, the temperature is low in winter and there are no heating facilities. Therefore, some wild rice in the northern region will also be more difficult to reproduce than in the southern region.

Rice wild rice has a great market value in our country, so rice wild rice cultivation is also very popular. In the past, people were very willing to grow wild rice in rice fields in order to increase their income, especially in rural areas, in order to increase their income, they would choose to harvest or irrigate rice after sowing, so that the rice could have sufficient water, save labor and improve farming efficiency.

The main reason for this may be that the homeowner may carry hybrid seeds and other circumstances may lead to the emergence of these wild rice, and the main reason for such a scarcity may be because of the destruction of the growing environment, and the infiltration of rice genes, resulting in a large reduction of these wild rice.

These may be the rice seeds that the workers accidentally left behind when harvesting the rice, and then they took root and germinated; Because there are fewer seeds left behind, and the environment is not very good, the number is small.

This may be due to the carelessness of sowing seeds from wild rice when mixed with normal seeds, or it may be a variation of the seeds.

You don't know much about the nature of the soil in rural agriculture, including many people who don't understand the law of natural development, so here I would like to express my personal views for your reference, land abandonment is not terrible, the terrible thing is to cultivate year after year, increase the amount of chemical fertilizer and pesticide application year after year, resulting in soil damage, land fallow and abandonment is more beneficial to the effect of land recuperation and treatment, and has the benefit of completely eliminating watery weeds in rice fields, and stubborn pests and diseases, and at the same time increasing the fertility of the soil. A variety of trace elements and biological elements that have been depleted by chemical fertilizers and pesticides for many years are readded into the deep soil to provide crop absorption

In this way, rice can be improved to varying degrees, and the application of chemical fertilizers and pesticides has been reduced, which fully verifies the proverb "Stay in the green mountains, not afraid of no firewood.""The truth.

The main reasons for this are:

1. Plant pathogens and pests have formed selectivity to "hosts" in the long-term natural evolution, such as corn borer generally only invades corn, and rice blast only invades rice. Rice fields that have been abandoned for many years have cut off the "food source" of rice pests and diseases, destroyed the living environment of pests and diseases, and made it difficult for pests and diseases to reproduce and survive. Therefore, there are fewer pests and diseases after recultivation.

2. Abandonment for a few years belongs to "fallow", and the land also needs to rest and recuperate to restore soil strength. After a few years of fallow, the soil fertility is restored, and then rice is planted, because rice can maximize the growth and development of nitrogen, phosphorus, potassium and trace elements, so the "stress" is strong, can effectively resist the invasion of pathogens.

3. The invasion and migration of germs and pests have a certain temporality. Although rice has also been planted in the newly restored paddy fields, it takes a certain amount of time for new encroachments, which provides farmers with a "time difference" and provides good conditions for a bumper harvest.

Summary:Simple explanation, pests have resistance and tolerance, drug resistance is the use of pesticides too much, pests will produce antibodies, the need is increasing, tolerance is that pesticides are less and less sensitive to pests and even have little effect, so replace other crops can be rid of pests, and then plant back rice The effect is good!

It may be that the soil nutrient of this paddy field is not particularly high, and there is no pest problem in this soil, which leads to the fact that the rice grows without disease.

It is precisely because of the famine for many years that there is no longer anything for the pests and diseases to eat, and there is nothing in it that can allow the pests and diseases to live, so the pests and diseases have decreased.

There are no disease sources in the paddy fields that have been abandoned for many years, and they have not been planted for a long time, so the nutrients are relatively rich, so there are relatively few pests and diseases.

Because the soil in the paddy fields that have been barren for many years is not fertile, and there are not many nutrients, it does not attract diseases and pests

Rice is one of the three major food crops in China.

Because it can directly drive the increase of grain production, rice cultivation has received relatively national attention, after all, it is the key to the granary. Hence the hybrid rice.

The successful cultivation is a historic event! Because the yield of hybrid rice is much higher than that of ordinary rice varieties.

Compared with conventional rice varieties, hybrid rice has the characteristics of more roots, longer roots, thick roots, faster root growth, deep soil penetration and strong absorption capacity. Therefore, hybrid rice is resistant to fertilizer, lodging and non-premature aging, and has a certain yield guarantee. Strong tillering ability is the highlight of hybrid rice, and it is based on this that the stem and leaves of hybrid rice grow vigorously and the leaf area is larger.

Leaf area coefficient of hybrid rice at each growth stage.

All of them were larger than those of conventional rice, with more spike number, strong photosynthetic capacity, high organic content and higher yield. Many crop varieties have limitations, including rice. Some rice varieties are not suitable for sowing in all regions.

However, hybrid rice is relatively adaptable. Hybrid rice can be planted in mountainous areas, hilly areas, plain areas and fertile areas, and the yield increase effect is obvious.

Choose the most reasonable planting density of paddy fields and grow as much rice as possible. Also pay attention to the density, not too dense. Plants planted together form a competitive relationship, and the two absorb nutrients together and become malnourished.

It will happen in the morning. In this way, it is not possible to increase production. It is easy for experienced growers to do reasonably dense planting. If they can't control it well, they can also rely on the power of technology. There are now many new machines that can help grow rice.

It is well known that increased yields must be supported by chemical fertilizers, but in the rice planting process, the use of chemical fertilizers is allocated according to demand. Just as people need different nutrients during the growing season, so different fertilizers are needed during different production periods, so it is important to use the right fertilizer at the right time. The most efficient use of rice is nitrogen fertilizer.

If the timing is not right, the root system will develop and malnutrition. Late maturing also has a great impact on rice yields. It is not only a reasonable time to take medication, but also a reasonable dosage.

The rational use of this fertilizer can improve rice yield, but if the application amount is too much, it will lead to excessive nutrients, which will affect the growth of rice to a certain extent. This will lead to a reduction in rice yields. The best way to use this fertilizer is to control the use of this fertilizer in the early stages of rice growth and increase its use in the middle of growth.

This will benefit the production of high-yielding rice. The planting area and yield of high-quality rice decreased slightly, while the planting area of high-quality rice increased. Gradually improve the minimum purchase price policy of rice, further reduce the proportion of policy purchases, and gradually form a high-quality and high-price purchase reserve mechanism.

Yes, hybrid rice is very powerful, and the yield of hybrid rice is also very high, and it can also sell a lot every year.

Yes, the yield of hybrid rice is particularly large, and it far exceeds that of ordinary rice, which is what Academician Yuan Longping studied.

Not. Now the yield of ordinary rice is particularly high, because ordinary rice is particularly easy to grow, so its yield is also particularly high.

The reason is the growth environment of rice, as well as the reason of temperature, and the reason of humidity, and we should also pay attention to the quality of rice seeds, the quality of the soil, and the moisture, all of which will affect the growth of rice.

I think it has to do with the land, fertilizer, moisture, quality and seeds.

The quality of rice seeds, temperature, humidity, nutrition, planting methods, soil quality, and moisture will all affect rice yield.

When the seeds of wild rice are mature, they are very easy to fall because wild rice is more adaptable to the natural environment, easy to land, and easy to reproduce.

Rice cultivation techniques.

The crop likes high temperature, humidity and short daylight, and has low requirements for soil.

The south of China is the main producing area, and the northern provinces are cultivated.

1. Shout seed treatment.

Seed treatment is a prerequisite in planting technology, generally before planting, the selected seeds are cleaned and disinfected in potassium permanganate solution, and then placed in a mesh bag for celery or germination treatment, and the temperature can be maintained at about 30 to germinate quickly.

2. Land preparation treatment.

In order to ensure the fertility of the cultivation medium, it is generally necessary to combine the cultivation and weeding treatment when preparing the land, and then add an appropriate amount of organic fertilizer and superphosphate, potassium sulfate and other fertilizers to the soil, mix and stir evenly, and then add a small amount of dixone for sterilization.

3. Transplanting treatment.

The germinated seedlings are transplanted into the soil, do not cultivate too densely, keep the plant row spacing at about 10 cm, hold the seedling roots by hand, insert the root system into the soil, it is best not to be too shallow, the root system should be kept completely covered by the soil, and it can also be carried out with a seedling machine, which is faster.

4. Post-planting treatment.

If there is a lack of seedlings after planting, it is necessary to replenish the seedlings in time to ensure the original planting density, and frequent irrigation treatment is required during the growth period.

5. Weeding treatment.

It is best to carry out weeding treatment frequently after planting, and herbicides can be applied to it one week after planting, mainly oxatrione, and when the growth is better, benzylthioyl herbicides can be added to the fertilizer to mix and spray to avoid weeds affecting the normal growth of plants.

In addition, after many years of fallowing, the nutrition of the soil increases, and the fertility of the soil is improved after the reclamation of the barren field. There is no water to irrigate the paddy fields, temporarily become dry land, people take it to grow rape, potatoes, peas, lettuce, pachyderm, chrysanthemum, lettuce, lettuce, cabbage and other vegetables, if you are too lazy to take care of the vegetables, generally the whole field is directly sprinkled with rapeseed sowing.

The annual ploughing is sure to be a bumper grain harvest. Reason: The original paddy field has been dry for three years, and the soil absorbs sufficient sunlight, two reasons, rice has not been planted for three years, and the diseases and insects have died.

Through the conclusions in practice, everyone must understand. Because the paddy field that has been abandoned for several years has no direct infection of pathogens, and the newly mined paddy field, there is no stubble planted for many years, no bacteria and eggs of diseases and pests, and it is suitable for the growth of rice, the nutrients are high, the plants are strong, the leaves are wide and green, and people are the same, strong and resistant to all kinds of diseases, which is the truth.

The wasteland is "short of water and cut off the flow, debris is piled up randomly, and the organic matter is lost due to heavy rain exposure, resulting in serious desertification." As Wenjun recounted, it may be that a certain paddy field has been left on hold for a few years, but it just so happens that the water has been shallowly soaking the field, huminizing rice straw and wilted weeds year after year, restoring biodiversity and fertilizing the soil. Although some of the land is not fertile, it is also very loving and knows the situation of the land better.

For many farmers, it is not an exaggeration to cherish the land as if it were their lives. Everyone wants to rest and raise the land, but there is no money to let the land rest, and they plant every day, and they can't wait to dig out the golden doll from the ground!

Soybeans will be planted next year, and rice and soybeans do not belong to the same family and genus, so it can be considered a crop rotation. At present, the rural areas of southern Gannan still generally use the method of crop rotation and fallow to plant vegetables and fruits, and the vegetables and fruits planted in season can be harvested without using any pesticides. However, if this policy can be carried out for a long time, it will have a certain positive effect on reducing the amount of chemical fertilizer used in China's agricultural production.