When farmers are planting, which crops are not tolerant to heavy stubble and cannot be planted again

The most serious harm of heavy cropping of peanuts is that the yield is seriously reduced, and the more continuous cropping years, the more serious the yield reduction. The heavy planting of peanut crops significantly reduced the available nutrients such as phosphorus, potassium, molybdenum, boron, manganese, zinc and iron in the soil, resulting in a decrease in yield. In order to grow and develop, peanut has a large demand and absorption of nutrients such as phosphorus, potassium, molybdenum, boron and other nutrients in the soil, and if it is cropped on the same land year after year, it will inevitably cause a lack of these nutrients, resulting in an imbalance in the proportion of nutrients in the soil, which will affect the growth and development of peanuts and reduce the yield of peanuts.

I think it's potatoes, because potatoes can easily cause germs, and if you don't pay attention, they can also cause stunted growth and reduce production, so we must be careful.

The following types of crops cannot be replanted: legumes, such as soybeans, melons, such as cucumbers; vegetables, such as garlic; Strawberries and some Chinese herbs, neither of them can be replanted.

How does heavy stubble harm crops?

1. Enrichment of harmful pathogenic bacteria: the microecological balance of soil and crop rhizosphere is destroyed, and harmful pathogenic microorganisms become the dominant population, while the beneficial microbial population of plants is degraded, resulting in a poor growth environment in the rhizosphere of plants;

2. Imbalance of essential nutrients for plants: continuous planting of the same crop will make the nutrients preferred by plants lack (especially trace elements), and will also enrich the elements that plants do not like or are harmful to;

Malic acid and salicylic acid in dicot root exudates combine with metal ions in the soil to form complexes, while citric acid forms complexes and chelates. Such as tobacco, potatoes, tomatoes, peppers, etc. Generally, the rhizome acid secreted by the roots of grasses only forms chelates with metal ions.

Relatively speaking, the root system will have a higher absorption and utilization of chelates, which is why some crops that are not tolerant to continuous cropping will have serious element deficiencies after continuous cropping. In fact, farming is not as easy as imagined, and there is a lot of learning.

Many crops have a lot of skill in planting. I believe everyone knows that there is a noun called continuous cropping, which means continuous cropping on the same piece of land. Continuous cropping is very harmful, and some crops die before they are harvested.

Crops that cannot be cropped include: legumes, such as soybeans and peas; melons, such as cucumbers and pumpkins; vegetables such as green onions, garlic; There are also some Chinese herbs, which cannot be cultivated continuously because the germs will accumulate in the roots of the plant, causing wilt, defoliation, virus diseases, etc.

This will seriously affect the normal growth of the plant. Today, in most parts of the country, farming is the main way to maintain their economy, and some farmers consistently avoid continuous cropping in order to promote better growth of their crops. The hazards of continuous cropping.

Through the accumulation of pathogenic bacteria in the roots of plants, the balance of soil, crops and ecosystems is disrupted, and microorganisms beneficial to plants gradually disappear. Because there are no microorganisms to decompose the fertilizer, the rate at which the crops absorb nutrients is slow, the growth rate is naturally affected, and the dominant varieties will degenerate into inferior varieties.

Another point is that some crops have too much demand for certain trace elements, resulting in the loss of some trace elements in the soil and the occurrence of element deficiency. Disease propagation and insect pests are important reasons for the serious reduction of yield and aggravation of pests in non-resistant continuous cropping crops. A large number of disease-borne pathogens and insect eggs of crops that are not resistant to continuous cropping remain in the soil, affecting the normal growth of crop roots, resulting in poor root growth and limited growth of aboveground parts.

Even if planted in alternate years, these residual germs and eggs can still have a certain effect on it, which is called summer seeding.

1.With the absence of trace elements, malic acid and salicylic acid in the exudates of dicot roots combine with metal ions in the soil to form complexes. 2.

Pests and diseases, diseases and insect pests are an important reason for the serious reduction of yield and the aggravation of pests and diseases during continuous cropping of crops that are not tolerant to heavy crops. Wheat, corn, rice, sorghum, millet, barley, oats, sugarcane, etc. can be planted in heavy cropping.

This is because for heavy cropping land, it has some trace elements missing, and there are certain pests and diseases, and there is a certain toxicity to some roots; Crops such as corn, potatoes, wheat, rice, cucumbers, etc., can be replanted.

Mainly because there will be pests, and trace elements are relatively small, easy to be infected by some bacteria, generally rice, potatoes, corn, these are okay.

1. Leguminous vegetables, beans are one of the favorite vegetables of the public, containing a variety of vitamins, proteins, minerals and trace elements and other nutrients, and it is also a relatively concentrated production of beans, early pod-bearing vegetables, there are many kinds of pests and diseases of beans, such as root-knot nematodes, root-fly maggots and other pests and diseases, after the harvest of beans, will be lurking in the soil, waiting for the opportunity to harm again, leguminous vegetables can be planted in rotation with Solanaceae vegetables. Watermelon and beans can also be used.

2, cruciferous vegetables continuous heavy stubble harm, rot bacteria can survive in the soil for about two years, planting Chinese cabbage for several consecutive years, it is easy to be infected with diseases, causing cabbage rot pimples, jumping beetles, aphids, etc. But if you have planted cabbage, Chinese cabbage, cauliflower, cabbage, camellia and other one of the previous crops, and then plant Chinese cabbage in the next crop, it is equivalent to heavy planting.

Pumpkin, cucumber, strawberry, eggplant, onion, garlic and green onion are all vegetables that are not resistant to heavy stubble.

Pepper, bitter gourd, zucchini, melon, strawberry, soybean, cotton, green onion ginger, garlic.

Crops that are not easy to reflux generally secrete toxins from the roots during the growth process, which remain in the soil. These substances inhibit the growth of the crop itself, accumulate within a few years, the growth of the seed crop deteriorates, the yield is not high, and the quality decreases. In fact, farming is not as simple as it seems.

There is a lot of knowledge in it, and there is a lot of technology in the cultivation of many crops. You know, a noun is called a rework. In layman's terms, continuous cropping refers to the continuous planting of the same crop on the same piece of land, and there are many harms in heavy cropping, and some crops will die without waiting for harvest.

Malic acid and salicylic acid in the root exudates of dicots combine with metal ions in the soil to form complexes, and citric acid forms chelates with complexes. For example, cigarettes, potatoes, tomatoes, peppers, etc.; The wheat root acid secreted by the roots of grasses generally only forms chelates with metal ions. In contrast, the increase in the absorption and utilization of chelating compounds by roots led to severe hypoxia after continuous cropping in some crops resistant to continuous cropping, and the excessive demand for certain trace elements in some crops led to the lack of some trace elements in the soil.

The reason why crops cannot be regenerated is that while regeneration inhibits crop growth, crop yields decrease and crop morbidity increases, a phenomenon also known as "aplastic disorders". There are many causes of multiple cropping disorders, such as soil malnutrition, and the proportion of nutrient requirements varies from crop to crop, so cultivating the same crop for many years can lead to a serious deficiency of certain elements in the soil, which inhibits the growth of future crops. Soil-borne diseases and pests.

In the first year of planting, a large number of diseases, pathogenic bacteria, and insect eggs remain in the soil, and the same crop is planted in the second year, and these diseases and pathogenic bacteria will affect the growth of crop roots and cause poor crop root production.

Several of these crops are absolutely non-renewable. One is legumes, soybeans, peas and other crops, as well as other crops such as melons, cucumbers, pumpkins, garlic, strawberries, etc. None of these crops can be sown repeatedly.

1. The content of soil elements is unbalanced, if the same crop is planted on a piece of land for several years, some elements in the soil are absorbed by the crops and the content decreases, and finally the needs of these elements cannot be met. 2. The occurrence of pests and diseases is serious, the soil will spread diseases and insect pests, and the crops planted in the first year, diseases, germs and insect eggs will remain in the soil in large quantities.

Crops are planted according to their own rules, which should be in line with the growth of crops and weather conditions. Heavy cropping will increase crop yields and yield higher yields. On the other hand, it may lead to malnutrition of crops and reduced yields.

Some crops are not suitable for this planting method, if they are planted in heavy crops, it will affect the absorption of nutrients, and the land is already very poor, which will also affect the yield and affect the emergence rate.

Summary. 1. Crops will reduce their yields year by year Heavy crop planting will reduce crop yields. The longer the heavy crop is planted, the more the yield will be reduced.

If you reach a certain year, the yield is very low and there will be no further increase. 2. The soil is malnourished and deficient in nutrients If you grow food crops in the field, the growth cycle is long. If you grow vegetables, the growth cycle is very short, you need more nutrients, and the nutrients in the soil are not enough, which will lead to soil malnutrition.

For example, when planting cotton, there will sometimes be a lack of potassium, and when growing vegetables, there will be a lack of calcium, and so on. 3. Dead seedlings and rotten trees Heavy stubble planting is easy to cause the phenomenon of dead seedlings and rotten trees. 4. Poor crop growth Heavy crop planting will lead to poor growth of peach trees, and will also affect the quality and yield of peach trees.

What are the major hazards to soil crops caused by farmers who replant crops year after year? What to do?

1. Crops will reduce their yields year by year Heavy crop planting will reduce crop yields. The longer the heavy crop is planted, the more the yield will be reduced. If it reaches a certain year, the yield will be very low, and there will be no increase in the wheel of any thing.

2. The soil is malnourished and deficient in nutrients If you grow food crops in the field, the growth cycle is long. If you grow vegetables, the growth cycle is very short, you need more nutrients, and the nutrients in the soil are not enough, which will lead to soil malnutrition. For example, when planting cotton, there will sometimes be a lack of potassium, and when growing vegetables, there will be a lack of calcium, and so on.

3. Dead seedlings and rotten trees Heavy stubble planting is easy to cause the phenomenon of dead seedlings and rotten trees. 4. Crop long cover signal is not good Heavy stubble planting will lead to the growth of peach trees, and it will also affect the quality and yield of peach trees.

Improve the harm caused by heavy crop planting 1. Crop rotation Rotation is not to plant the same crop continuously on the same land. For example, plant a crop of beans and plant a crop of millet. Plant a crop of sesame seeds, plant a crop of melons.

Plant a crop of sorghum and a crop of black beans. This rotation improves the quality and yield of crops. 2. Selection of varieties Crops should be selected with stronger disease resistance.

Varieties with strong disease resistance are easy to resist various diseases, and there is less chance of getting pests and diseases in farming, so they can grow better. 3. Fertilizer Fertilizer should be increased with well-rotted farmhouse fertilizer. About 10,000 pounds of rotted farmhouse fertilizer on one acre of land.

This improves the quality of the soil and makes it soft and breathable. 4. Spraying roots If conditions permit, some biological agents can be used to irrigate the roots, so that the roots of crops can be deepened, grow better, and have stronger disease resistance. It can prevent some of the hazards caused by heavy cropping and can also improve crop yields.

1.There are many types of vegetables, such as cruciferous, lily, umbelliferae, and grasses, and vegetables are not afraid of heavy stubble and can be planted continuously.

2.Among them, the common vegetables of the cruciferous family are Chinese cabbage, greens, rape, cabbage, radish, cabbage, mustard greens, kohlrabi, bok choy, greens, etc., which are characterized by the fact that the leaves of the basal are all lotus-shaped, without supporting leaves, and the petals are arranged in a cross shape.

3.Warm, sunny environment, drought tolerant, cold tolerant.

Crops that cannot be cropped include: legumes, such as soybeans and peas; cucumbers, such as cucumbers, pumpkins; vegetables such as green onions, garlic; There are also some Chinese medicinal herbs, which cannot be planted continuously, because the germs will gather in the roots of the plant, causing blight, defoliation, viruses, etc. This will seriously affect the normal growth of the plant.

Today, in most parts of the country, agriculturalism is the main way to maintain their economy, and some farmers have avoided continuous cropping in order to promote better growth of their crops. The harm of continuous cropping is through the accumulation of pathogenic bacteria in the roots of wild animals, destroying the balance of soil, crops and ecosystems, and the microorganisms beneficial to plants gradually disappear. Because there are no microorganisms to decompose the fertilizer, the rate at which the crop absorbs nutrients is slower, the growth rate is naturally affected, and the dominant variety will degenerate into the inferior variety.

Another point is that some crops have too much demand for certain trace elements, resulting in the loss of some trace elements in the soil and the occurrence of element deficiency. Disease spread and insect infestation are important reasons for the serious reduction of continuous cropping yield and the aggravation of insect pests of crops that are not resistant to continuous cropping. A large number of disease-borne eggs that are not resistant to continuous cropping are left in the soil, which affects the normal growth of crop roots, resulting in poor root growth and limited growth of aboveground parts.

Even if the seeds are sown in alternate years, these residual germs and eggs can still have a certain effect on them, which is called summer sowing.