Why can t flooded land be cultivated?

Because the water quality of the flood is very mixed, it is easy to destroy the original soil nutrients in the field, which is not conducive to the growth of crops.

The land is flooded, generally the terrain is low, the rainy season is too much rain, the drainage is not smooth, there are some paddy fields and dry land in the hometown of the villager, there are relatively low terrain places, there are many heavy rains in summer, there are floods, and the flooded land is not that can not be cultivated, but must first be exposed to the sun, cultivated soil and other treatments, do not cultivate directly.

We all know that floods contain a lot of impurities, even human and livestock excrement, and contain certain bacteria, and the crops sown in this situation are also unhealthy and can even affect the yield of crops.

Because there are some substances in the flooded land that are not conducive to the growth of crops, it is said that it cannot be cultivated.

Flooded land is polluted with dirty water, and if the moisture content of the land is too high, there will be less oxygen in the soil, which is not conducive to seed germination.

If there is still water in the flooded land, drain it out first and dig deep into the ridges.

Dig a few more drainage ditches in the side drainage ditch and the ground, and make a few more drainage outlets for drainage in places that are conducive to drainage; There is no water in the ground, but the ground is dirty, so you can sprinkle water first after the flood and locusts.

When the pests suddenly had no way to live, they all drowned. The rice, wheat, and beans grown in this way do not even need to be sprayed with pesticides, but the yield is excessively high.

<> if it is a major flood and it lasts for a long time, it will have to find another way to solve it; The land is good for growing crops, and there are no pests, but there is a possibility: there are more rodents! Because the flood can drown everything else, but it is difficult for rodents to drown the flooded land, and there are some similarities between the flooded land and the new soil we dug up, after a flood, the upstream sediment is often silted up to the banks, mixed with grass blades and dead wood.

or growing plants and trees, which are also buried together with the sediment to form a new soil layer.

The flooded areas of the valley have become very fertile, and the seasonal floods have brought a lot of nutrients and water to these areas, so that the harvest in the coming year is much higher than in the year when there is no water, and we have the saying "one water and one wheat", which means that the fertilizer, including the cooked layer of the soil (the cultivated layer), is carried away with the water. After the flood of this kind of plot, after the sunny day is cool, when it can be deeply cultivated, it is necessary to reapply farm fertilizer such as chickens, ducks, pigs and sheep manure before cultivating the land, 30 cubic meters per mu, and spread evenly.

Another situation is that some land that is prone to flooding, most of which is low-lying, and whenever there is a flood, it must still be submerged, in other words, it is a disguised waterway, and even if such land is planted with crops, there is no guarantee that there will be a harvest. It's summer again, and most of it rots in the ground, making it the best fertilizer for the next year, and the soil is much softer. After freezing in winter, bacteria and pests are frozen to death, and the soil for spring cultivation is loose and delicate, and the first fertilizer is also omitted.

Because the land washed by the flood washed away all the nutrients on the surface of the land, and also brought a lot of silt, so you can't plant directly, you need to expose the land to the sun, clean up the debris inside, and then apply some fertilizer, so that you can plant.

Because this kind of soil is prone to rot in the roots, and it is also easy to lack oxygen in the roots. Be sure to fertilize the soil more so that you can increase the fertility of the soil.

Because the soil at this time is very bad, and there are no nutrients in the soil. We can fertilize the land in a cyclical and gradual manner.

Legal Analysis: If the land is flooded because of the actions of others, you can file a lawsuit for compensation.

Legal basis: Article 1166 of the Civil Code of the People's Republic of China stipulates that if an actor causes harm to the civil rights and interests of others, regardless of whether the actor is at fault or not, the law provides that the law shall bear tort liability, follow those provisions.

When floods occur, they are unavoidable, so you should protect yourself instead of thinking about the loss of crops. At present, the relevant departments also provide a certain amount of compensation for the losses suffered by the peasants in the event of floods. So farmers don't have to worry about what to do when the floods recede.

As long as the soil is successfully treated, it is ready to be cultivated. But when floods occur, farmers are still in a bad mood.

I think the impact is very big because floods contain a lot of toxic substances and bacteria, which can seriously affect the soil quality.

Farming should not be carried out immediately after the accumulation of floodwaters, but after a period of time, so that the fertility of the soil will continue to accumulate.

There are many lands in the world that are subject to varying degrees of flooding every year. When the flood comes, not only the surrounding people have to relocate, but a large amount of cultivated land will also be flooded, bringing huge economic losses to people's production and life. After the floodwaters subsided, the displaced personnel returned to their places of origin and gradually resumed reconstruction work.

However, it is difficult to cultivate farmland directly in a short period of time that has been flooded. What is the reason for this?

Let's start with the familiar things around us. When we are constructing buildings or constructing railways and highways, we often pile up dirt around them. This soil is usually new soil dug out of the ground and piled together.

This mound has a characteristic. If it is not used for a long time and no one takes care of it, it is often that the grass does not grow in the first year, and the grass grows in the second year, but it is not lush and scattered. As time goes on, in the third year, more and more grass grows on the mound, becoming more and more lush.

The grass that grows on the mound is also associated with the area. The south has a humid climate, abundant thermal energy resources and high precipitation. The grass can grow that year, and the grass may be empty the next year. If it's in the north, wait two or three years. Growing grass in the northwest is even more difficult.

There are some similarities between the flooded land and the new soil we dug up. After floods, upstream sediments often silt up to the banks, with blades of grass, dead wood, and growing vegetation in between. Buried together to form a new layer of soil.

It is also possible that the flood lasted too long and was soaked by the flood for a long time. Although no new soil layer has been silted, the soil structure is destroyed and the land is not productive and can no longer be cultivated.

Flooded land has no soil features. In layman's terms, it is still "raw" and not yet "mature". The earth is like a piece of land, and there is a world of difference between each other.

The land is difficult to grow plants. It takes millions of years of evolution to form the soil in which plants can grow.

After the flood, it is necessary to turn over the soil and bask in the sun, which can accelerate the mixing with the air, promote the development and circulation of microorganisms, change the maturation process of the soil, and accelerate the formation of the soil. The nutrients that plants can absorb also promote the formation of minerals and mobile inorganic salts, preparing the soil for formation.

When the soil structure is in place, green rice or corn can be grown, and the land after the flood will really become soil.

The microorganisms in the original soil were either washed away by the flood or died in large numbers in the flood environment, and did not have the ability to continue to "ripen" the organic matter.

Because flooded land breeds many pests and diseases, it is difficult for plants to survive, so they cannot be cultivated directly.

It's because there are no nutrients in such soil, and there are a lot of miscellaneous things in it, so you should nourish the land.

Pingfeng Village and Poyang Lake are separated by only one embankment. In 1964, the villagers built a dam to block the lake and build fields around the lake, forming an inner lake in the village. Due to the proximity to Poyang Lake, the artillery embankment in Pingfeng Village has been designated by Jiangxi Province as a retreat embankment, and if required, the water level of Poyang Lake exceeds the warning line, and the artillery embankment should take the initiative to open the gate for waterproofing.

The water level of the lake outside Poyang Lake is meters, exceeding the flood line required by Jiangxi Province to prevent flooding. Pingfeng village opened the floodgates and caused flooding. The yellow lake jumped into the embankment from the gate of the embankment, and the inner and outer lakes gradually flattened, and the villagers' farmland and ponds were almost flooded.

For the villagers of Pingfeng Village, who have not experienced flooding, it seems that they have no sense of the concept of their hometown being a single-retreat flood storage area. The situation in the local ** is that the concept of flood prevention has changed a lot, and it has been actively waterproofing until now after strictly preventing stagnant water. Lu Zhishu and Gao Hualin, a cadre of the main village of Shunde Township and Pingfeng Village, were the first to open the floodgates to cause floods.

The lake outside Poyang Lake is meter, exceeding the flood line required by Jiangxi Province. The protected farmland area of Pohang in Pingfeng Village is less than 10,000 mu, and it is a single retreat embankment controlled by Poyang Lake, and Hong Xiuwei's water level in the lake area is meters. The water level in the Poyang Lake area reached meters, and the flood water almost crossed the embankment of Pingfeng Village, with a drop of nearly 5 meters from the inner lake.

The water level is still rising, but the work of the "flood control dam" cannot be slackened until the Jiangxi Provincial Flood Control and Drought Relief Headquarters has issued a notice to open the gates. It cannot be asserted on its own. It's very strict.

Gao Hualin is well aware that in the event of a flood, the green late rice seedlings and soybeans in the farmland along the shore will be flooded, and it is unknown to what extent Pingfeng Village will be flooded with the nearest house less than a kilometer from the embankment. In Beitang Village, Wutong Township, a critical area, hundreds of acres of farmland in their village were damaged by flood control levees, and crops could not be planted during the flood for 7 or 8 years, and some farmland was washed away by the floods. They hope to repair the levee as soon as possible and protect the village's farmland.

Led by Mao Junle, a villager from Beitang Village, he went to the farmland near the edge of Beitang Village, and although it was not raining at this time, the flood water still did not recede. Farmland near the river was largely flooded. The production roads in the fields were also flooded.

The place Mao Junyue was referring to was all farmland, which has now become a waterway. The collapsed cement brick house next to it was originally a dormitory for Liang Shuo's boss to grow sugar oranges on the farmland in the village. Since the farmland was often flooded, the boss did not return to his roots.

Our fields by the river have a lot of water every year, and no one dares to grow crops. Mao Junyue is a farmer in the underground tunnel of Beitang Village, his family has 3 acres of farmland near the river, and he has suffered from floods all year round, and now he does not dare to farm. You see, these were not waterways, they were all farmland, and now they have become waterways.

Because it's damp. Planting on such land can easily lead to root rot of plants.

Let's start with the familiar things around you. When we build buildings or railways and highways, we often pile up dirt around them. These soils are usually new soils that have been dug out of the ground and piled together.

This mound has one characteristic. If it is not used for a long time and no one takes care of it, it is often that the grass does not grow in the first year, and the grass grows in the second year, but it is not lush and scattered. As time goes on, by the third year, more and more grass grows on the mound, becoming more and more lush.

The grass that grows on the mound is also associated with this area.

Southern China has a humid climate, abundant heat resources and high precipitation. The grass will grow one year, but it may be gone the next year. If it's in the north, it's two or three years.

It is even more difficult to grow grass in the northwest. After heavy rainfall, nitrogen, potassium and other elements in the soil are easily lost. As we all know, one of the necessary conditions for plant growth is the 17 elements necessary for plants.

Without essential elements, plants cannot grow, but without essential elements, plant growth is inhibited.

Due to the erosion of floods, the soil loses more essential elements, which will cause many plants to not grow. We can liken essential elements to food, and flooded land can be used as a room. The popular understanding is that there is no food in this room, and everyone who comes to this room will starve to death.

Due to the special geological background of this area, a large number of iron and manganese oxide films in the soil have a strong adsorption effect on heavy metals.

According to my reliable understanding, when there are a large number of heavy metals in the flood, the flood will inundate the soil as the water level rises, and the iron-manganese oxide film will trap a large amount of heavy metals in the lower layer of the soil, causing more serious pollution. Generally speaking, there are many "small sponges" in the soil, which absorb heavy metals into the "small sponges". Even if the water recedes, it will not take away the "small sponge" that adsorbs heavy metals in the soil.

However, many heavy metal elements are toxic to plant growth, which further leads to inhibition of plant growth. Oxygen insufficiency**.

After heavy rain and waterlogging, nitrogen, potassium and other elements in the soil are easily lost; Due to the special geological background of the region, a large number of iron and manganese oxide adhesive film in the soil has a strong adsorption effect on heavy metals, when there are a large number of heavy metals in the flood, as the water level rises and the flood soaks the soil, the iron and manganese oxide adhesive film traps a large number of heavy metals in the middle and lower soils, resulting in more serious pollution. At the same time, there is not enough oxygen** and the accumulation of sediment leads to a large number of microorganisms dying or migrating, so it is not suitable for immediate farming.

Cultivated land that has been flooded for a long time can be deposited with organic matter with fertilizer, but the surface soil and water of the flooded land that was once suitable for cultivation are washed away by the current, and the mud deposited later belongs to cold soil, and cold soil cannot be cultivated directly without improvement. This cold soil improvement takes a certain amount of time. If flooded land is cultivated without repair and improvement, rotten seeds will not be able to take root and germinate.

Even if the seeds can germinate, there is also the phenomenon of root roasting, which directly affects the survival rate and quality of life of crops.