What is the best fertilizer to use for tomato top dressing, and what fertilizer is best to use for t

The process of tomato topdressing:

One control: the period from tomato planting to fruit set, should look at the seedling top dressing and control the amount of top dressing. If the top dressing is too much and too concentrated, it is easy to cause the plant to grow, and even cause flower and fruit drop.

Therefore, in addition to the serious lack of fertilizer in the plant during this period, the amount of top dressing should generally be controlled, and a little dilute manure water or biochemical organic fertilizer solution can be applied.

2. Promotion: Tomatoes should be fertilized frequently at the young fruit stage and harvest period to promote their growth and development. When the first ear of fruit grows to the size of walnut, it is necessary to quickly apply fast-acting fertilizer 1-2 times, and generally apply a concentration of 30% human manure or 5% sulfur-containing compound fertilizer extract to ensure that the plant is not defertilized.

After the young fruit enters the swelling, in order to meet the needs of plant growth and avoid later defertilization, the fruit should be diligently pursued and the fruit preservation fertilizer should be applied every 10 days on sunny days, and the concentration of 40% human manure or 5% sulfur-containing compound fertilizer extract should be applied every 10 days.

Three sprays: Tomatoes not only absorb nutrients from the soil from the roots, but also absorb mineral nutrients from the leaves to promote the development of fruits and seeds. Therefore, during the fruit growth period, especially when the soil topdressing can not be carried out in the early stage of continuous rain, foliar fertilizer should be sprayed 2-3 times, 300-500 times of organic liquid fertilizer can be sprayed, and 500 times of chelated multi-compound micro-fertilizer can be sprayed to improve the quality of tomatoes.

Four taboos: Tomato topdressing should not be carried out in the case of wet soil and high temperature at noon, and avoid excessive concentrated fertilization. Concentrated fertilization is easy to make plants grow and produce fertilizer damage; Fertilization in the case of wet soil is easy to cause physiological diseases such as flower drop, leaf drop and fruit drop; Fertilization under high temperature conditions will affect the large amount of water evaporation from plant leaves, which will affect the fertilizer efficiency.

In addition, the fertilization time should avoid high temperature periods, and it is advisable to use it in the early morning or late afternoon.

The "three sprays and four taboos" of tomato topdressing:

Tomatoes not only absorb nutrients from the soil by the roots, but also mineral nutrients from the leaves to promote the development of fruits and seeds. Therefore, during the fruit growth period, especially when the soil topdressing can not be carried out in the early continuous rain, foliar fertilizer should be sprayed 2 3 times, 300 500 times of biochemical organic liquid fertilizer can be sprayed, and 500 times of chelated multi-compound micro-fertilizer can also be sprayed to improve the quality of tomatoes.

Tomato topdressing should not be carried out in the case of wet soil and high temperature at noon, and avoid too concentrated fertilization, because concentrated fertilization is easy to make the plant grow and produce fertilizer damage; Fertilization in the case of wet soil is easy to cause physiological diseases such as flower drop, leaf drop and fruit drop; Fertilization under high temperature conditions will affect the large amount of water evaporation from plant leaves, which will affect the fertilizer efficiency. In addition, the fertilization time should avoid high temperature periods, and it is advisable to use it in the early morning or late afternoon.

Hello, tomato needs more potassium fertilizer during the fruiting period, and if you want better results, you should apply some compound fertilizers with high potassium content in time, so as to supplement the nutrients you need. After fertilization, the fertilizer should be diluted with appropriate watering, and the plants can absorb it faster. In addition, it is also necessary to pay attention to watering, at this time the water consumption is also more, and sufficient water and nutrients will ensure better fruit quality.

1. What fertilizer is good to apply during the fruiting period.

Tomatoes need more potassium fertilizer during the fruiting period, so it is necessary to apply some compound fertilizers with high potassium content, so that the required nutrients can be replenished in time, so as to achieve 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.

2. How to fertilize.

1. Apply basal fertilizer: it itself requires a large amount of fertilizer for crops, and it is necessary to apply sufficient basal fertilizer when planting. 5000-6000 kg of farm fertilizer, 10 kg of urea and ammonium phosphate, and 80 kg of superphosphate should be applied per mu, and it should be applied at one time.

2. Phased topdressing: topdressing should be carried out in time during the growth stage. Generally, growth can be resumed one week after the fixed value, and at this time, farm fertilizer should be applied to promote faster growth of seedlings.

When the first ear fruit begins to swell, organic fertilizer should be applied, and nitrogen fertilizer should be applied during harvesting, which is also conducive to the growth of the second and third ear fruits.

3. Top dressing of foliar fertilizer: During the management period, not only granular fertilizer should be applied, but also foliar fertilizer should be applied in time. It should be sprayed twice at the seedling stage, once at the seedling stage, and once at the seedling stage, and it should be sprayed once every 7-10 days in the middle, twice in a row, so as to timely supplement the nutrients consumed by the seedlings, which is conducive to flowering and fruiting.

Tomato topdressing time.

Fertilization is required for the survival of tomato seedlings after transplanting. Nitrogen, phosphorus and potassium water-soluble fertilizer and humic acid active liquid fertilizer can be applied to the roots, and natural brassin, humic acid active liquid fertilizer and potassium dihydrogen phosphate can be sprayed on the leaves. At the flowering and fruiting stage, potassium nitrate and potassium dihydrogen phosphate were applied to the roots, and potassium dihydrogen phosphate, natural brassin, and humic acid active liquid fertilizer were sprayed on the foliar surface.

What fertilizer is used for tomato top dressing.

Depends on the growth of the tomato and the fertility of the soil. Organic fertilizer, nitrogen and phosphorus fertilizer are generally applied during the growth period, and potassium fertilizer is required in the fruiting period. Therefore, some compound fertilizers with high potassium content should be applied in order to supplement the required nutrients in time and improve fruit yield.

Tomato topdressing is generally better with urea, because we all know that tomatoes grow fast, the growth cycle is short, urea can play a role quickly, to meet the nutrients needed by plants, so it is better.

Tomato topdressing method.

Tomatoes should be fertilized before planting to the fruit set to avoid growing too fast. If there is a severe shortage of fertilizer during this period, you can spray a little thin manure or biochemical organic fertilizer. Qinying topdressing can promote the growth and development of tomato at the young fruit stage and harvest stage.

In addition to root fertilization, foliar fertilizer should also be applied, which can be sprayed with organic liquid fertilizer.

Tomato top dressing precautions.

Tomato foliar topdressing needs to be done in the morning and afternoon when the weather is good and will not affect plant absorption. Do not do top dressing at noon. Outdoor tomatoes can not be topdressed in the wind or in the rain.

Foliar top dressing can be done with potassium dihydrogen phosphate or compound micro-fertilizer. At present, there are many types of foliar fertilizers, which should be used correctly according to the instructions, and can be used alternately.

1. What kind of fertilizer is good for tomatoes?

When growing tomatoes at home, such as in small vegetable gardens or potted plants, it is suitable to use organic fertilizers as base fertilizers, such as well-rotted animal manure, so that the vegetables grown are greener. When planting tomatoes in the earth, the main pursuit is high yield, and foliar fertilizers can be applied during the tomato growth period, such as potassium dihydrogen phosphate, and liquid fertilizers can be applied during the tomato growth period, such as diammonium phosphate, potassium phosphate, ternary compound fertilizer, etc.

Second, how to fertilize tomatoes.

1. Bottom fertilizer: tomato does not need to be fertilized when sowing seedlings, before transplanting and planting, it is necessary to mix the bottom fertilizer when preparing the land, usually per mu that is, every 667 square meters to sprinkle 5000kg of chicken manure or pig manure, and then turn 40cm deep to make a ridge, and then sprinkle 20kg of diammonium phosphate and 20kg of potassium phosphate to the ditch.

2. Foliar fertilizer: because the tomato is planted with sufficient spring fertilizer, it is not necessary to apply liquid fertilizer before the plant flowers and bears fruit, and the tomato can be sprayed with foliar fertilizer once a week after the plant transplants and slows down the seedlings, and the potassium dihydrogen phosphate can be used.

Top dressing: When the tomato bears fruit and the second ear fruit grows to the size of a walnut, the first top dressing is carried out in combination with irrigation, and 15kg of diammonium phosphate, 10kg of potassium phosphate or 25kg of ternary compound fertilizer can be applied each time, and the fertilizer is dissolved in water each time and watered with water. When the fourth and sixth panicles of tomato are expanded, fertilizer water is applied once.

Tomato fertilization can be carried out in the period when the plant is growing more vigorously, and when fertilizing, nitrogen fertilizer or phosphorus and potassium fertilizer and water need to be mixed evenly to provide tomatoes, and at the same time, you also need to pay attention to the amount of fertilizer when fertilizing.

1. Fertilization time

To fertilize tomatoes, you need to pay attention to the fertilization time, in most cases, you will choose to provide nutrients for tomatoes during the period when they are more vigorous, so that tomatoes can grow more vigorously, that is, in spring and autumn you need to provide nutrients for tomatoes in the morning, and in summer you need to fertilize the plants in the early morning.

2. Types of fertilization

When fertilizing tomatoes, you also need to pay attention to the type of fertilizer. In the period when tomato growth is more vigorous, it is necessary to provide nitrogen fertilizer for plants, improve the growth rate of tomatoes, provide phosphorus and potassium fertilizer for plants in the flowering and fruiting period of tomatoes, and promote flower bud differentiation of tomatoes.

3. Fertilization method

There are two ways to fertilize tomatoes. The first is to add fertilizer directly to the soil and wait for the soil to digest the fertilizer and deliver it to the tomato roots, and the second is to mix the fertilizer and water evenly and water it and water it in the soil, or spray it on the tomato leaves, so that the plant can grow more vigorously.

4. Precautions

When fertilizing tomatoes, it is necessary to pay attention to the amount of fertilizer, so as to avoid fertilizer damage from the extremities of the plant. If the tomato is provided with too many nutrients, it is necessary to immediately pour a large amount of water into the soil to dilute the fertilizer content in the soil, and at the same time, it is necessary to regularly loosen the soil for the tomato to drain the excess water from the soil and allow the plant to grow healthily.

The following fertilizers can be used 1Full nutrient fertilizer: contains nitrogen, phosphorus, potassium, calcium, magnesium, sulfur and other elements, which can comprehensively improve the growth and development of plants.

Fertilizers with different ratios of cherry blossoms are used at different stages of tomato growth to meet the different nutrient needs of the plants. 2.Organic fertilizer:

Rich in organic matter, it improves soil texture and fertility, increases soil loftiness and water retention capacity. Commonly used organic fertilizers include decomposed compost, chicken manure, pig manure, etc. 3.

Diammonium phosphate: Phosphorus is one of the important elements that promote plant growth. Diammonium phosphate is a high-concentration phosphate fertilizer suitable for the growth of tomato fissures, which can promote the development of root round and flowering and fruiting.

4.Urea: is a widely used nitrogen fertilizer that provides nitrogen for plant growth, promoting leaf growth and cytoplasmic mass growth.