Some vegetables will affect the yield and quality after planting, which vegetables are not resistant

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.

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.

Vegetables that are afraid of heavy stubble are:1. Leguminous crops, legume crops are most afraid of heavy stubble, if planted continuously, the seedlings will be invaded by the virus, blindly searched in the countryside called dragon disease, after the emergence of the branches, the leaves do not grow, and gradually shrink, and finally dry up and die, such crops are: soybeans, beans, cowpeas, peas, etc.

Therefore, if you plant legume plants in the first year, you should never plant legume crops on them in the second year, you can plant other crops, and plant them again after an interval of one to two years.

2. Melon crops, melon vegetables and bean vegetables are the same, the most feared is heavy stubble, once the stubble, the leaves will yellow and wither and shrink, and the flowers will also fall, and the melon seedlings will also appear stiff seedlings, not long, yellowing, premature aging, etc., serious plots will dry up and die before the flowering seedlings, such as: cucumber, watermelon, pumpkin, loofah, winter melon, etc. Therefore, melons and vegetables cannot be planted continuously, at least every other year, which needs to be paid attention to.

3. Eggplant, pepper should not be stubble, eggplant and pepper stubble, the plant will have serious diseases, growth will also be abnormal, common symptoms are root diseases, leaf wilting, rotten roots, dead trees, etc., because these diseases are caused by heavy stubble, not general diseases, it is difficult to prevent and control with drugs, therefore, planting eggplant or pepper plants, must not be planted in a place continuously, to be planted in rotation with other vegetables, in order to reduce the occurrence of diseases, to obtain high quiet reputation yield.

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.

Vegetables that cannot be replanted are: eggplant, beans and so on.

1. Three eggplants. The so-called three eggplants usually refer to peppers, eggplants and tomatoes. Solanaceae crops planted by heavy stubble, the cost of input will increase several times, and sometimes the effect of control is often not ideal, the best way is to change the stubble rotation, the rotation of different varieties of the same Solanaceae is not counted, for example, the tomatoes planted in the first stubble are not suitable for planting peppers and eggplants in the later stubble, which is also considered to be heavy stubble planting.

Only by rotating with non-Solanaceae crops can the occurrence of heavy cropping disease be overcome.

2. Beans. Beans are one of the favorite vegetables of the public, containing a variety of vitamins, proteins, minerals and trace elements and other nutrients, but also the yield of beans is relatively concentrated, early pod 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 lurk 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.

Introduction to vegetables that are not suitable for crop rotation:

1. Cucumbers. The front stubble of spring cucumber is mostly autumn vegetables or spring vegetables and overwintering side vegetables, and the back stubble is suitable for planting a variety of autumn vegetables, the front stubble of summer and autumn cucumbers is suitable for all kinds of spring and summer vegetables, and the back stubble is suitable for wintering vegetables or spring side vegetables. Cucumber and tomato inhibit each other, and should not be rotated and intercropped.

2. Tomatoes. 3 5 years of crop rotation, not with Solanaceae crops, the front crop is a variety of leafy vegetables and root vegetables, the back crop can also be leafy vegetables and root vegetables, and short-stem crops or vegetables, intercropping, such as edamame, cabbage, bulb fennel, onions, garlic and other intercropping. Autumn shed tomatoes, interplanting side vegetables can reduce the ground temperature.

Interplanting sweet corn in tomatoes can lure moths to lay eggs and eliminate them intensively.

3. Carrots.

The pre-crop crops of carrots in autumn and winter are mostly wheat, spring cabbage, spring cabbage, beans, etc. Later crops can be inoculated with wheat, onions, spring cabbage, green onions, potatoes, etc.

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.

According to my reliable knowledge, the reason why crops cannot be regenerated is because regeneration inhibits crop growth, while crop yields decrease and crop morbidity increases, a phenomenon also known as "aplastic disorder". 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.

The physiological obstacle of crop regeneration planting is the repeated planting of the same type of crops for many years, resulting in the imbalance of soil nutrients and inducing various diseases. Crops should be cultivated in rotation to avoid multiple planting, and the land can be improved, such as applying organic fertilizer to increase soil organic matter.

Organic fertilizer can not only provide essential nutrients for crops, thereby enhancing soil aeration, increasing soil organic matter content, promoting the number and activity of soil microorganisms, inhibiting harmful microbial activities, reducing the harm to root growth and development, and preventing the harm of stubble. Weeding, fertilization, and medication can be carried out in a timely manner to reduce the harm of pathogenic bacteria. In addition, fertilizer should be applied in a balanced manner during the management process to replenish the nutrients needed for crop growth.

There is a serious lack of allonutrients in the soil, such as wheat requires a large amount of phosphorus, stubble wheat is in short supply, taro needs more potassium, stubble yield reduction, early withering is related to potassium deficiency, and bowl beans, watermelon, sesame, soybeans, cabbage, etc. are all related to lack of oxygen due to poor harvest. Accumulation of pests and diseases, infectious viruses, pathogenic bacteria and pests overwintering in Honda and becoming the source of infection, many crop diseases are related to regenerative infections such as cucumber, green pepper, tomato wilt, wilt, soft rot, and sclerotinia sclerotinia disease. Cotton wilt, rape sclerotinia sclerotinia and carrot nematode disease can induce other diseases.

Some crops need more nutrients, the first planting will absorb a lot of nutrients, if you plant again, the soil is not able to better ** some nutrients, the growth of plants is not particularly good, the harvest is relatively low.

Because it will reduce their survival rate. Usually this plant is fragile if planted with stubble. They don't get enough nutrients.