How do you fertilize potted tomatoes? How should tomatoes be fertilized after fruit set?

The fertilization method for potted tomatoes is as follows:

Liquid manure is used, which is mixed with a certain percentage of nutrient solution, which can be sprayed directly on plants and soil. The nutrient solution is easy to handle, and the excretion of grass charcoal, fermented soybean cake residue, sesame oil, etc., can be soaked in water to obtain the nutrient solution, and then sprayed.

The first fertilization time is basically one month after sowing, that is, the fruit size of the first period is about the size of a ping-pong ball. Thereafter, the nutritional status should be observed at all times, and the amount of fertilizer should be the same for each application. Tomatoes have a high demand for potash during the growing season.

In addition to organic fertilizer, some quicklime powder and eggshell powder can also be added appropriately.

Additional information: If the leaves start to wither, they should be watered immediately. Sometimes the surface of the soil is dry, but the roots are wet, so you need to dig 5 cm (the second joint of the finger) to feel the moisture in the soil. If you feel a little damp, don't water it.

Tomatoes prefer a dry environment. If you want to get high-quality fruit, you must limit the amount of water as much as possible. In addition, if there is too much moisture, it may get sick or wilt.

If it's the rainy season, you need a balcony garden to avoid the rain. During the growth of tomatoes, fruit growth regulators can be sprayed to improve flowering and fruiting.

It is best to apply more base fertilizer, and you can use fermented farmhouse fertilizer, so that you don't need to apply fertilizer anymore. If you want to apply, you can use a small amount of compound fertilizer, a few grains are enough, and it is easy to burn the seedlings to death.

Keep it moist with watering, and if the fertilizer is fermented, the farm fertilizer is buried under the root soil, and if you don't have it, put some compound fertilizer.

Hello. Tomato planting before the application of foot fertilizer, that is, organic fertilizer, seedlings generally do not water, wait until the flower buds are differentiated, that is, when flowering, do not lack water, when the fruit is expanded, potassium fertilizer should be applied, watered once a day.

It can be applied together with the water-to-point fertilizer at the time of watering, or foliar spraying.

It is best to use the prepared nutrient solution, the concentration of seedlings is not too high, you can master it, and the concentration of seedlings can be increased to about 1% when they grow up.

Potted tomatoes, fertilization "fast and slow" matching, the growth rate is fierce and fruitful.

After the tomato bears fruit, it can be applied with a fertilizer containing potassium, diluted with water and applied to the roots of the plant, and it can also be sprayed with superphosphate or potassium dihydrogen phosphate solution as foliar fertilizer, generally every 10 days or so to apply fertilizer, fertilization to master the principle of thin fertilizer diligent application.

How to fertilize tomatoes after they bear fruit.

1. Apply potassium fertilizer.

Tomato needs sufficient nutrients to grow after hanging fruit, at this time it is necessary to apply potassium fertilizer to promote the expansion of its fruit, dilute the fertilizer containing potassium in a certain proportion, and apply it to the roots of tomato plants, at this time it is necessary to apply less nitrogen fertilizer, otherwise it will adversely affect its fruit.

2. Apply foliar fertilizer.

After the tomato bears fruit, it can also be applied foliar fertilizer, such as spraying superphosphate or potassium dihydrogen phosphate solution, which is conducive to the ripening of tomato fruits, and can also improve the yield of tomato fruits, and can also add some calcium, boron and manganese during the fruit-hanging period. Zinc. molybdenum and other trace elements.

3. The number of fertilization.

Tomatoes should be fertilized frequently after fruiting, and tomatoes of late-maturing varieties need to be in the first.

1. After the harvest of the second ear fruit, 3-4 times of top dressing, so as to meet the nutrients required for the growth of tomatoes, generally every 10 days or so, it is not advisable to apply fertilizer for a long time, so as to avoid poor growth of tomatoes.

4. Precautions.

When fertilizing tomatoes, you need to master the principle of thin fertilizer diligently, you can not apply thick fertilizer to it, so as not to cause fertilizer damage due to excess fertilizer, and raw fertilizer can not be applied.

The first top dressing is when the first ear fruit begins to expand to the size of a walnut, and nitrogen fertilizer is the main thing to speed up the expansion and growth of the first ear fruit (when the first ear fruit begins to expand, combined with watering, top dressing "fruit promotion fertilizer", this time the amount of fertilizer generally accounts for 30 40% of the total fertilizer. ）

The second topdressing is when the first ear fruit is about to be harvested, and the second ear fruit is expanded to the size of a walnut, which is also mainly nitrogen fertilizer, and an appropriate amount of phosphorus and potassium fertilizer is applied;

The third top dressing is after the harvest of the second ear fruit, with sufficient Bika water-soluble fertilizer as the main fertilizer, with an appropriate amount of phosphorus and potassium foliar fertilizer (when the first ear fruit is partially ripe, each.

When the second and third spikes of fruit enter the rapid expansion period, the demand for fertilizer and water reaches the peak, and it is necessary to chase "fruit fertilizer". ）

Generally, apply enough organic fertilizer before planting, and then you can leave it without fertilization.

After deep ploughing and raking, it is opened into a box with a width of 80 cm and a height of 16-24 cm, and the width of the box ditch is 33 cm, and each box is planted in 2 rows. When fertilizing, the reasonable ratio of nitrogen, phosphorus and potassium is 1:1

2. Apply 3000-5000 kg of decomposed organic fertilizer per mu, with 25 kg of superphosphate and 20 kg of potassium fertilizer (or 80 kg of plant ash).

Tomato should be topdressed appropriately during the growth period, and nitrogen fertilizer should not be applied partially, but with phosphorus and potassium fertilizer. Generally, seedling fertilizer is applied after planting to promote the growth of stems and leaves. After the first ear fruit begins to expand, the second top dressing is carried out to promote the fruit expansion, and the middle and late maturing varieties still need to be in the first.

After the first and second ears are harvested, top dressing is carried out 3-4 times.

Foliar topdressing with superphosphate or potassium dihydrogen phosphate solution during the growth of the peel is conducive to fruit ripening and increasing yield. After planting and slow seedlings, it is necessary to cultivate and protect moisture, and irrigation should be controlled during the flowering period of the first inflorescence, and the clumps should be held to prevent flower and fruit fall caused by excessive growth of stems and leaves.

Pay attention to the right time and the right amount.

The so-called suitable potato refers to the tomato when it is needed, such as the stool bark eggplant leaf color is light, the plant growth is weak, fertilization is timely. As for when to fertilize, it depends on the different growth and development periods of tomatoes, such as more nitrogen fertilizer can be applied at the seedling stage, rotted human urine manure, soybean cake fertilizer, sesame cake fertilizer, etc., to promote the rapid and robust growth of seedlings.

During the pregnancy bud period, you can apply more phosphorus, potassium fertilizer, chicken, fish offal, bone meal, bran ash, etc., which is the ash formed by burning the rice husk, containing potassium elements, in order to promote the growth of flowers and seeds.

In the early stage of fruit set, the fertilization of the coarse person should be properly controlled to facilitate the fruit set. No matter what period of fertilization should pay attention to the appropriate amount, if too much nitrogen fertilizer, it is easy to form elongation, too much potassium fertilizer, hinder fertility, affect flowering and fruiting.

Farmhouse organic fertilizer. Due to the long growth period of tomatoes, the growth of stems, leaves, and fruits is large, and more fertilizers are needed, mainly nitrogen, phosphorus, and potassium. However, in order to improve the yield and quality, we must pay attention to the use of organic fertilizers, a combination of organic and inorganic, mainly organic fertilizers, supplemented by lead fertilizers.

First of all, we need to know what fertilizers and elements are needed for the growth of this plant, which are very suitable for their growth. In the process of growth, in fact, their demand for nitrogen, phosphorus, potassium and other elements is relatively large. The biggest thing is to plant nitrogen and potassium fertilizers in the reserve, and tomatoes should pay more attention to the use of fertilizer.

I think tomatoes grow healthy, and the base fertilizer should be done well. It is best to use more well-rotted organic fertilizer or farmhouse fertilizer, and add an appropriate amount of nitrogen, phosphorus and potassium compound fertilizer. Reasonable base fertilizer can make the tomato root system developed, tomato is very adaptable to the soil, and the pH value is the best in slightly acidic, fertile and deep soil.

Tomato has the most potassium demand for soil nutrients, followed by nitrogen and the least phosphorus, but phosphorus is very important for the development of flowers and fruits, so tomato should properly control water and fertilizer in the early stage to avoid growing too fast. When the first ear blooms, sprinkle a small amount of flowering water, and apply an appropriate amount of phosphorus-containing water-soluble fertilizer with the water to make the plant grow vigorously. The use of human feces is often controversial.

Some people wonder how dirty excrement can be used as fertilizer for imported tomatoes, and it's uncomfortable to think about it. Actually, these are all imaginary. In real life, especially in rural areas, fertilization is indeed a key to growing high-yielding, delicious tomatoes.

In my opinion, to fertilize tomatoes, we should mainly use organic fertilizers from farms, such as rotting grass and potassium fertilizer, farm toilet grass, dry chicken manure, etc. If you use flower fertilizer, choose a compound fertilizer rich in nitrogen, phosphorus and potassium. The soil is fertile and rich in humus, and the tomatoes grown are not only good for the plant, but also good for the taste.

But there are very few lands that naturally have this property, which is generally achieved through fertilization; All kinds of manure in the countryside are farmhouse manure that contains a lot of humus.

The correct method of fertilizing tomatoes: choose fertilizer reasonably, determine the appropriate amount, apply it in stages, and spread it evenly.

1. Reasonable choice of fertilizer: tomatoes are suitable for organic fertilizer and inorganic fertilizer combination. Organic fertilizer can improve soil organic matter and soil structure.

The inorganic fertilizers are mainly nitrogen, phosphorus and potassium fertilizers, and the ratio is about n:P2O5:K2O=1:

1：1。Foliar fertilizer is calcium fertilizer.

2. Determine the appropriate amount: Selling mold tomatoes has high requirements for fertilizer amount, and generally applies 20-30t hm2 of organic fertilizer, 200-250kg hm2 of inorganic fertilizer, P2O5200-250kg hm2, and K2O250-300kg hm2. The specific amount of fertilizer is determined according to soil nutrition and crop growth stage.

3. Divided application: It is ideal to apply the full amount of fertilizer in 2-3 times. The base fertilizer accounts for 30-50% and is applied 15-20 days before land cropping.

Top dressing 1 was applied at the seedling stage and the middle stage of the first bubble, and top dressing 2 was applied at the flowering stage of the first bubble. Foliar fertilizer can be applied 2-3 times at the seedling stage and seed setting stage.

4. Uniform spreading: organic and inorganic fertilizers should be evenly spread on the surface and in the furrow to avoid excessive concentration and unbalanced nutrition. A root fertilization depth of 8-15 cm is optimal. Foliar fertilizer should be evenly sprayed on the leaves.

Common pests and diseases of tomatoes

1. Streak disease: caused by fungi, mainly invading leaves, producing yellow or brown streaks, and in severe cases, leaves die. The control methods are the selection of disease-resistant varieties, disinfection of seeds, early application of fungicides, etc.

2. Late blight: caused by the virus, the leaves appear yellow, and the leaves are curled and deformed in severe cases. The control method is to select disease-resistant varieties, use virus-free seeds, and sterilize and disinfect in the field.

3. Brown spot disease: caused by fungi, brown round spots appear on the leaves, and spread to the stems in severe cases. High temperature and rainy conditions are prone to occur. The prevention and control method is the same as that of spot disease.

4. Brevear: caused by fungi, the infected leaves appear brown at the edges and die, and in severe cases, a large area of leaves die. The prevention and control methods are to select disease-resistant varieties, improve ventilation and light transmission conditions, and reasonable fertilization.

5. Spider mites: white webs appear on the leaves, and the leaves are deformed and shrunk in severe cases. High temperature and little rain are prone to occur during the growing season. The control methods are the selection of acar-resistant varieties and the use of acaricides at the seedling stage.

After the tomatoes are fruited, they need to be grown, ripened, and of good quality. In view of this demand and the increased demand for potassium in tomatoes at this time, it is necessary to apply some compound fertilizers with high potassium content, so that the required nutrients can be replenished in time for better results.

Note that it is best to water the fertilizer in moderation after fertilization, which will dilute the fertilizer, the plant can absorb it faster, and it can also avoid fertilizer damage. In addition to applying during the fruiting period, it is necessary to water frequently, and the amount of water consumed at this time is also relatively large, so it is necessary to water thoroughly every time to replenish the required water.

After the tomatoes bear fruit, in addition to supplementing the necessary potassium elements, other trace elements such as boron, zinc, etc. also have a great effect on the growth of tomatoes, if these elements are missing, it is not conducive to the growth of tomatoes. Therefore, it is recommended to spray some medium and trace element fertilizers on the foliar surface for nutritional supplementation to avoid adverse conditions such as nutrient deficiency and fruit deformity, which will affect the quality and yield of tomatoes.

Precautions for growing tomatoes.

Tomatoes are suitable for planting in a warm and humid environment, and should be planted at a temperature of 25 to 28 °C, as temperatures below 10 will affect seed germination and growth. Spring planting in the northern region is generally from mid-May to raise seedlings, at this time the temperature will gradually rise, suitable for sowing, while the southern region can be planted around the Qingming Festival, a month earlier than the north.

Planting tomatoes does not have high requirements for soil, there are no specific requirements for the selection of soil in the north and south, and the general soil can be planted, but if you want to grow high-quality tomatoes, you must choose a thick layer of soil that is fertile, easy to drain and has little nutrient loss. In winter, tomatoes from the north and south must be shed to avoid cold erosion.