How to fertilize greenhouse vegetables in winter so that there will be no fertilizer damage?

Answer: winter greenhouse vegetables, poor circulation, easy to fertilizer, do not apply too much fertilizer at one time, after the application should be watered in time, keep moist, and to apply the organic fertilizer completely rotted before applying, there is also pay attention to ventilation.

Winter greenhouse vegetables. It is best not to use farmyard manure that is not rotten. Also, the amount of fertilizer should not be too large, and trace elements should not be used as base fertilizer. Don't use too much water. Fertilize according to the condition of the soil and the weather to prevent climate change.

Farmers should fertilize scientifically, do not apply too much fertilizer at one time, and then water in time to keep the soil moist, and water again when it is dry. And they advocate deep mulching, that is, covering the soil back after applying fertilizer, so that the fertilizer and the soil are well mixed, not just sprinkled on the ground.

Summary. Hello dear, I'm glad to answer for you, winter vegetables can be fertilized. Fertilize according to the type of vegetable.

Chinese cabbage, green cabbage and other leafy vegetables need more nitrogen, so high-nitrogen compound fertilizer should be selected; Root vegetables such as radish and potatoes should be reapplied with fertilizers with higher potassium content; Cucumbers, peppers, tomatoes and other fruits and vegetables, in addition to nitrogen fertilizer, phosphorus, potassium fertilizer demand is also larger, base fertilizer should be selected nutrient balance of compound fertilizer, and with organic fertilizer. I hope mine is helpful to you, oh love you. <>

Can <> winter vegetables be fertilized.

Hello dear, I'm glad to answer for you, winter vegetables can be fertilized. Fertilize according to the type of vegetable. Chinese cabbage, green cabbage and other leafy vegetables need more nitrogen, so high-nitrogen compound fertilizer base bond should be selected; Root vegetables such as radish and potatoes should be reapplied with fertilizers with higher potassium content; Cucumbers, peppers, tomatoes and other fruits and vegetables, in addition to nitrogen fertilizer, phosphorus, potassium fertilizer demand is also larger, base fertilizer should be selected nutrient balance of compound fertilizer, and with organic fertilizer.

I hope mine is a good match for you, oh love you. <>

<>Hello dear, vegetable fertilization and reapplication of organic fertilizer. The application of organic fertilizer can not only improve the physical, chemical and biological properties of the soil, mature the soil, fertilize the soil, improve the quality of products, reduce the nitrate and nitrite content in vegetables, increase the content of vitamin C, and increase the sugar content of melons and fruits. Moreover, in the process of decomposition and utilization, organic fertilizer can produce carbon dioxide and accumulate in greenhouses, which is conducive to improving the photosynthesis of vegetables and promoting the increase of vegetable production.

I hope mine is helpful to you, oh love you. <>

Farmyard manure can improve soil organic matter through a variety of elements and trace elements, so it is widely used in the planting industry, and the application of farmhouse manure for vegetables in plastic greenhouses must be fully mature. If the farmhouse fertilizer is not mature enough to enter directly, it contains a large number of germs and insect eggs, fertilize after fertilization, maintain the spread, and a large amount of ammonia and seedlings can be burned in the process of fermentation and maturity. The whole fertilizer method is divided into base fertilizer, autumn fertilizer, leaf fertilizer, the bottom fertilizer is generally tasted a week before the formal meal, mainly organic fertilizer and farmhouse fertilizer, and the taste should be evenly mixed with the soil.

Autumn rain is generally based on fast-acting fertilizers to promote the rapid growth of vegetables, chase ditches or holes at a distance of 7-10 cm from plants, cover soil and water in time after autumn rain, and can not directly contact plants. To prevent the fertilizer from volatilizing or burning the vegetables.

Foliar fertilizer is generally placed in the peak season and late growth period when fertilizer is needed, and is carried out on cloudy days or in the evening, and the mixed fertilizer solution is sprinkled on the leaves to allow vegetables to absorb. If there is too much fertilizer and the salt concentration in the soil is too high, the soil can be controlled by chlorination and nitrogen fertilizer application, and phosphorus, potassium fertilizer**, nitrate, nitrogen fertilizer fertilizer is prohibited. In the management of the house, it is necessary to increase the ventilation time, strengthen the work, reduce the nitrate content, give some fertilizer, improve the soil structure, improve the quality of vegetables.

The trial of incomplete materials is an appropriate amount, and the demand for trace elements for vegetables is small, but it has a great effect on vegetables, which can greatly improve the quality of vegetables.

The amount used must be reasonable, in order to avoid the loss of fertilizer, the good use of plant growth regulators can play a role in increasing yield, but it is necessary to control the time and concentration of use. Otherwise, it will not only fail to increase production, but also affect human health. Temperature control should be based on the principle that plants do not freeze, and the temperature should not rise too high, especially the water temperature should be properly controlled.

The method of covering the mulch film with the cultivation line, covering the wheat straw with the operation line, or covering the plastic film with the whole film can reduce the evaporation of soil moisture and reduce the humidity in the warehouse. Field management of vegetables in winter sheds is multifaceted, but the most important are water, fertilizer, temperature, light, pest and disease management. Temperature control is the key to the management of winter greenhouse vegetables.

It is necessary not only to take ultra-small warming measures across the board, but also to prevent crops from flourishing due to excessive temperature and humidity.

Before planting, put an appropriate amount of organic fertilizer or manure into the key, add trace elements to the soil, use pesticides to prevent insects in vegetables, and regularly sterilize vegetables.

1. Before planting, be sure to apply a sufficient amount of well-rotted organic fertilizer or manure to supplement the soil with healthy and nutritious organic matter and other nutrients.

2. If conditions permit, the application of organic fertilizer is accompanied by the application of medium and trace element fertilizer and EM microbial fertilizer or medium and trace element fertilizer containing biological bacteria to supplement the soil with medium and trace elements and beneficial bacteria.

3. If there are many harmful pathogens in the soil and the heavy stubble is serious, the self-trophic biological bacteria that can eliminate the harmful bacteria of the soil can be flushed and fertilized after applying the bottom fertilizer, which contains the nutrients that the plant quickly absorbs and solves the harmful bacteria of the soil, purifies and activates the soil, improves the permeability of the soil, and can nutrientically take root, let the plant grow healthily, and improve the absorption and utilization of fertilizer.

4. Regarding fertilization, it is good to balance water-soluble fertilizer, but try to choose potassium nitrate and potassium dihydrogen phosphate, so that the soil sulfate ion is less, which is relatively high for reducing soil acidity and alkalinization, and the absorption and utilization of this kind of fertilizer is also relatively high, and the amount of fertilizer is reasonably grasped according to the growth of the plant.

Deep fertilization. Chemical fertilizers should be applied deeply or dissolved in water.

2. Appropriate amount of fertilization. Due to the low loss of fertilizer in the greenhouse, its application rate should be lower than that of open-field vegetables.

3. Organic fertilizer is applied cooked. In particular, pen fertilizer and human and animal manure must be fully decomposed and fermented before application.

Summary. Watering and fertilizing vegetables grown in greenhouses will cause fertilizer damage problems, which is related to the low organic matter content in the land.

Watering and fertilizing vegetables grown in greenhouses will cause fertilizer damage problems, which is related to the low organic matter content in the land.

Well, would this still happen if the soil was improved?

Improving the soil is not going to happen.

Alas, how easy is it to make vegetables fertilize in addition to increasing the use of fertilizer.

Reduce the amount of fertilizer used and avoid over-fertilization.

Growing vegetables in greenhouses is prone to fertilizer damage, what are the fertilizer damages? The phenomenon of chemical fertilizer damage in vegetable reserve areas is more serious. There are many reasons for this. The fertilizer loss of greenhouse vegetables can be broadly divided into three categories.

One is that the amount of chemical fertilizer is too large or too close to the plant, and the crop is burned by high concentration of chemical fertilizer, such as too much urea at one time will burn the seeds or seedlings.

Second, the excessive application of one nutrient leads to a deficiency of other elements. For example, excessive application of potassium fertilizer will result in a lack of calcium and magnesium in the crop.

The third is closed management, excessive application of nitrogen fertilizer, no soil covering or timely ventilation after application, resulting in ammonia or nitrite gas poisoning.

So how to scientifically and reasonably prevent the harm of these three fertilizers in the process of greenhouse vegetable planting?

1. Scientific and reasonable fertilization. In particular, it is necessary to prevent excessive fertilization at one time; After the basal fertilizer is applied, the soil should be covered in time or the basal fertilizer should be well mixed with the soil. When greenhouse vegetables are covered, they should be rinsed with water according to the required concentration.

If it is spraying or sub-application, the sub-application should be deep and covered in a timely manner. After fertilization, it should be watered in time. Spraying fertilizer on the greenhouse floor is not allowed and is no longer managed.

2. Pay attention to the balanced fertilization of greenhouse vegetables. Especially when applying potassium fertilizer, do not blindly assume that applying more potassium fertilizer can flower and bear fruit and increase yield. Greenhouse vegetables also need to be nutriently balanced, and the application of potassium fertilizer should also pay attention to the appropriate amount and frequency.

When applying zinc, iron and other trace element fertilizers, do not mix directly with phosphate fertilizers, but it is best to mix them with organic fertilizers or other nutrient fertilizers before applying, the effect will be better.

3. Pay attention to the appropriate amount of nitrogen fertilizer applied to greenhouse vegetables. When nitrogen fertilizer is applied to greenhouse vegetables, if nitrogen fertilizer is applied excessively, it is easy to cause ammonia and nitrite gas to accumulate in the greenhouse soil, and after volatilization, it will cause ammonia combustion damage to greenhouse vegetables. In addition to the proper application of nitrogen fertilizer, it is best to apply it in combination with phosphorus, potassium fertilizer and other fertilizers.

After application, it should be washed with water or covered with soil in time, so that the nitrogen fertilizer can be fully absorbed and utilized by greenhouse vegetables as much as possible.

4. In the process of greenhouse vegetable planting, organic fertilizers, slow-release and controlled-release fertilizers should be applied as much as possible. Because fertilizers with slow nutrient release can not only make it easier for greenhouse vegetables to fully absorb and utilize, but also reduce the production of harmful gases and inhibit the production of nitrite gas. It can also use some nitrification inhibitors in a timely and appropriate manner to further prevent the production of nitrite gas.

In short, in the process of greenhouse vegetable planting, it is necessary to pay attention to scientific and reasonable fertilization, balanced fertilization, especially the rational application of nitrogen fertilizer. In addition, we should develop the good habit of observing frequently, being good at thinking, and summarizing. When we find that there is fertilizer damage, we should find the cause in a timely and reasonable manner, and apply the drug to the case to avoid unnecessary economic losses caused by fertilizer damage.

If the nutrient concentration is too high, it is a fertilizer type. Chemical fertilizers or organic fertilizers are often applied too much at one time, exceeding the amount required for vegetables; Toxic gas fertilizer damage. It mainly refers to ammonia, nitrogen dioxide and sulfur dioxide gas poisoning.

Other fertilizer damage phenomena. Use urea as seed fertilizer or seed dressing, because urea is a high-concentration fertilizer, containing a certain amount of biuret, so that it loses its germination ability; Dehydrated fertilizer. Due to too much chemical fertilizer at one time, or insufficient soil moisture, the concentration of fertilizer solution in the soil after fertilization is too large, resulting in reverse osmosis of water in crop cells, resulting in crop dehydration

Growing vegetables in greenhouses is easy to fatten. What are the fat damages? The phenomenon of vegetable reserves being destroyed by chemical fertilizers is more serious.

There are many reasons for this. The fertilizer loss of greenhouse vegetables can be roughly divided into three categories. One is that the amount of chemical fertilizer is too large or too close to the plant, and the crop is burned by the high concentration of chemical fertilizer.

For example, if there is too much urea at one time, it will burn the seeds or seedlings. The second is that the overapplication of one nutrient leads to the deficiency of other elements.

There is a possibility that there will be rotting, many plants may be burned to death, be sure to pay attention to the use of farm fertilizer, be sure to pay attention to the use of urea.

Some growers do not prepare enough base fertilizer when applying base fertilizer, and the type of fertilizer is single. This often causes the lack of nutrients in greenhouse vegetables, and the growth rate of crops will be very slow. Therefore, it is best to have a complete range of base fertilizers, and a variety of fertilizers should be used reasonably to complement each other.

Need to increase the amount of application, autumn stubble planting vegetables in the high temperature and low temperature season, the early growth of fast needs to properly control the growth, sometimes from the total amount of fertilizer to be raised, whether to feed the amount of vegetables required during the growth period, but if it does not reach a certain period of growth demand nutrient intensity.

As a natural fertilizer, farmyard fertilizer is very beneficial to the growth of vegetables. But when applying farmhouse fertilizer, we should pay attention to keep it fully rotten, if it is not rotten, farmhouse fertilizer will produce a large amount of ammonia, and the plant is also very prone to root burning, causing various pests and diseases. The second can not use a bubble bombing fertilization method, to apply less fertilizer and fertilization frequently, the third will look at the leaves, see the flowers and see the fruit fertilization, will not see, often fail.

There are also some flush fertilization to cake fertilizer (hemp seed cake, cotton cake, soybean cake) and diammonium phosphate (or ammonium nitrate), the effect is not good, the reason is that the cake fertilizer fermentation takes a certain amount of time, the cake fertilizer should be broken first, and then soaked in human feces and urine for about 3 weeks, and then applied after high temperature fermentation. Farmyard manure is a natural fertilizer that is very beneficial for the growth of vegetables. However, care should be taken to maintain full maturity when applying farmyard manure.

If it is not ripe, farmyard manure will produce large amounts of ammonia. This plant is also prone to burning roots, leading to various pests and diseases, which seriously affect the growth of vegetables.

The concentration of soil solution is too high, the vegetable root system is damaged, and the phenomenon of burning roots or red roots appears, and in severe cases, it will cause leaf atrophy or stiff fruit and dead trees. Therefore, in winter, we should first pay attention to the amount of fertilizer, and the general amount of fertilizer is about half of the amount of conventional fertilizer. Ammonium bicarbonate is an ammonium nitrogen fertilizer, which can be directly absorbed and utilized by crops after being applied to soil.

Superphosphate is a water-soluble fast-available phosphate fertilizer, and its fertilizer effect is faster than that of calcium, magnesium and phosphate fertilizer. However, it should be noted that it is best not to use ammonium bicarbonate for greenhouse vegetables, but to use 45% ternary compound fertilizer instead to prevent ammonia damage.

The use of a large number of fertilizers that are not suitable for the soil, without fertilizing after doing a good job of drainage, or a large amount of irrigation, often does not have any effect in this case, and this misunderstanding must be avoided as much as possible.