What fertilizer should be applied to small saplings just unearthed, and what fertilizer is best to a

In the early stage of seedling growth, sufficient nutrients are extremely beneficial for its growth. The amount of nutrients and fertilizer required by the seedlings in the nursery can be estimated in advance, and these fertilizers can ensure the rapid growth of the seedlings when they are young. In the first two years after planting, the ** situation of seedling nutrients is generally like this:

Conifers (800,000 seedling hectares) need 120 kg of nitrogen, 15 kg of phosphorus, 50 kg of potassium, 60 kg of calcium and 20 kg of magnesium. Deciduous trees (1 million to 2 million seedling hectares) require 150 kg of nitrogen, 25 kg of phosphorus, 90 kg of potassium, 150 kg of calcium and 25 kg of magnesium. Different tree species have different nutrient requirements and should be treated differently.

It is usually divided into the following three categories: The vast majority of annual seedlings require less fertilizer. Annual pine seedlings, broad-leaved trees with more nutrients and perennial conifers require average fertilizer.

Perennial deciduous trees require more fertilizer. In areas with average soil nutrient content, seedlings with average fertilizer requirements should be applied at least about 50 kg of nitrogen, 40 kg of phosphorus and 50 kg of potassium per hectare. If the local soil nutrient content is severely insufficient, then the amount of fertilizer applied should be doubled.

Another important part is the correct adjustment of the soil response. Many trees prefer acidic soils, with a pH of about 5 for sandy soils and around 5 for loam. For calcium-loving species, the pH indicator should be neutral.

Small seedlings generally use fast-acting fertilizers to grow faster, and plant ash can be chosen.

Urea, potassium chloride.

etc., which can be quickly absorbed by plants.

However, when using, it is necessary to crush large particles or dilute them with water before use.

You can also use fully decomposed farm fertilizer, such as sheep manure, pig manure, cow manure, etc., which are good natural fertilizers.

You can also buy water-soluble fertilizer for fertile leaves, diluted and used.

All healthy fruit trees require a high amount of fertilizer. Although all plants need 16 elements, which are considered essential, a large number of elements are the ones that are consumed the most from the soil. It is important to fertilize regularly to keep the trees healthy.

The macronutrients that we should apply regularly are nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (mg) and sulfur (S), carbon, hydrogen and oxygen are also nutrients that are needed in large quantities, but these elements are provided by air, water and organic matter.

Of course, it is a ternary compound fertilizer, that is, a chemical fertilizer with nitrogen, phosphorus, and potassium, because there is no need to consider the problem of eating, and there is no need to worry about the amount of organic matter!

To put it simply, nitrogen fertilizer is the tube of leaves, phosphate fertilizer tube branching and flowering, potassium fertilizer tube fruit, the expansion of rhizomes, the strength of plants, and the color of the peel!

Therefore, if you are a sapling, you need all three elements, and you don't need to focus on it, you can supplement it in a balanced way, and if you apply fertilizer, you can do a good job of thin fertilizer and apply it frequently!

Like a small sapling, the fertilizer is best compound fertilizer, that is, nitrogen, phosphorus, potassium fertilizer, and the amount is relatively balanced. Secondly, the farmer's fertilizer is also very good.

In the process of growing young seedlings, nitrogen, phosphorus and potassium fertilizers are very much needed.

<> you can look at its young shoots, and in the countryside it is often said that how many buds grow will grow as long as the roots grow. But at this time, you can not apply heavy fertilizer, you can use very light rotten pig manure water to fertilize, the further it goes, the more atmospheric it becomes. In the second half of the year, you can add about one or two compound fertilizers to a load, and don't add too much fertilizer.

Let the fertilizer have a fermentation process in the soil. Nowadays, people transplant plants with nutrient soil. I don't know if the seedlings you transplant are trees, vegetables, or flowers, but try to dig up the soil and bring it with the seedlings so as not to hurt the roots of the plants.

<> this way, when the seedlings are transplanted, the fertilizer has been dissolved into the soil, and the roots of the seedlings can quickly absorb the nutrients in the soil. Moreover, after this transplanting loosening soil, the fertilizer will not gather into a pile and cause the seedlings to burn. Watering to maintain sufficient water to ensure the survival of seedlings, root fertilization will hurt its roots and die, foliar fertilization hurts stems and leaves, if conditions permit, you can water rooting agent to ensure that the root system is developed, fertilization only after the seedlings survive before flowering to enhance the growth of stems and leaves to promote flowers and fruits.

It is best not to transplant on a rainy or sunny day, if you really can't wait for a rainy day, you should pay attention to the rain or block the sun on a rainy or sunny day, and avoid the impact of heavy rain or exposure, especially in summer. Freshly planted seedlings should be moistened for a week to half a month. When the newly transplanted seedlings have three buds and leaves, a little water and fertilizer can be applied appropriately, but not in the range of the main stem, and the distance from the tree stem is appropriate according to the position edge of the root system.

After transplanting seedlings, these comprehensive environmental factors have changed to varying degrees, especially soil, nutrition, and water, and it is difficult to ensure that there is no difference between the old and new environments, which is why most of the plant transplanting needs to be transplanted with soil, in order to reduce the impact of environmental factors. It is advisable to wait for germination before fertilizing. When fertilizing, about 30 cm away from the trunk of the tree is ditched and applied, 2-3 taels of diammonium phosphate compound fertilizer are applied to each plant, and watered in time after fertilization.

In June and July, potassium sulfate compound fertilizer was applied again.

Newly transplanted seedlings should not be fertilized, because the newly transplanted seedlings have not yet survived, and if fertilization is applied, the death of the seedlings may be accelerated, so fertilize the seedlings after they are alive.

It is not allowed to be fertilized, because it will burn, and it will grow very badly, and the young seedlings that have just been transplanted can be watered more.

No, because it is easy to damage the roots of the sapling, and it is not conducive to its self-growth later on.

After the seedlings are transplanted and planted alive, the rhizomes are damaged during the planting process and need a period of repair to repair their growth and development. At this time, agricultural producers can properly prepare a certain amount of urea from the thinner manure liquid in the village organic fertilizer.

The solution was carried out with extra-root topdressing to introduce seedling development. After planting and watering the saplings once, it is best not to water them for 10 to 15 days. Because the rhizomes of newly planted seedlings need to have a stable period, the requirements for water and nutrients during this time period are very small, and watering is equivalent to consumption.

Wait 10 to 15 days before pouring.

Water every 10 days thereafter. Basal fertilizer, phosphorus and potassium fertilizer, potassium fertilizer, are known as the three major elements of organic fertilizer to grow all food crops.

These three kinds of organic fertilizers are indispensable. There are also some nutritional elements, calcium, magnesium, manganese, iron, and tin, which are all nutritional elements, so you can directly choose the three major elements to carry out fertilizer. If they are matched with each other, too many of them will also cause pests and diseases.

Don't be in a hurry to fertilize the newly planted seedlings, you can use some booster drugs that absorb nutrients from the booster branch system software until they grow up and then start to fertilize slowly.

The absorption system of small seedlings is not sound when they are just planted, and it is very easy to kill the small seedlings if they are fertilized. For newly planted seedlings, survival is key. At this time, the young seedlings do not sprout new roots, or only a small number of new roots, and the need for fertilizer is not great.

At this time, the small seedlings can basically not absorb the fertilizer, because the new roots are particularly sensitive, and they will continue to burn the roots, which will harm the survival rate of the seedlings. Secondly, the seedlings have already survived through a spring of growth, and many sprouts have digested and absorbed roots, and can digest and absorb chemical fertilizers.

However, at this time, fertilization will cause small seedlings to grow vigorously and sprout a lot of autumn shoots, which is not conducive to the abundance of stems and endangers the greening seedlings to survive the winter. According to the growth and development of the situation and appreciation of the provisions of moderate fertilizer, chemical fertilizer should be dominated by organic fertilizer, if organic fertilizer is applied, compound fertilizer should be used.

For dominant, new flowers and trees with weak growth and development or slow growth and development can be fertilized once a month during the growth season, and the fertilization concentration value must be suitable.

For newly planted saplings, you can choose plant ash when fertilizing. Urea. Potassium chloride. These fertilizers can be quickly absorbed by plants, and bio-organic fertilizers can also be used, commercial organic fertilizers, and so on.

Newly planted seedlings should not be fertilised, and newly planted seedlings are usually not fertilised until five months after planting. If you want to fertilize trees, it is best to use nitrogen fertilizer or nitrogen-based fertilizer, because trees are foliage plants, which can absorb all the fertilizer well and make the trees grow more vigorously.

When planting, you can apply some fertilizer at the bottom of the pit as base fertilizer, if you don't apply base fertilizer, you can wait until you survive, and apply fertilizer once in May and June. In the future, fertilizer can be applied once a year before germination (around March).

Fertilizer of small seedlings generally uses fast-acting fertilizers, such as plant ash, ammonium sulfate, urea, ammonium chloride.

Potassium chloride, diammonium, etc., these fertilizers must be completely crushed, and should not be applied in blocks, which is convenient for dissolution and absorption.

Organic fertilizers can also be applied, such as human and animal manure water, compost, etc., but they should be fully fermented, decomposed, and raw manure should not be used, and the concentration should be diluted. Nitrogen fertilizer has strong infiltration mobility in the soil, and can be shallowly applied to penetrate into the root distribution layer and be absorbed by seedlings. Potassium fertilizer and phosphate fertilizer have poor mobility, so it should be applied deep to the dense distribution of root system.

Vegetable seedlings should be applied compound fertilizer, do not sprinkle chemical fertilizer in the heart leaves, so as not to cause seedlings to burn, it is best to top dressing each time combined with watering for pat shooting. At the seedling stage, the use of nitrogen, phosphorus and potassium fertilizers such as oranges should be used as little as possible, which will cause a large number of nutrients to accumulate in the rhizosphere of young vegetables, which will not only not be absorbed by the root system, but will cause root nutrients to flow back. At the same time, if more nitrogen fertilizer is used at the seedling stage, it may cause vegetable seedlings to grow vigorously.

Newly planted seedlings are usually fertilised five months after planting. Before the seedling planting brigade starts to starve, you can apply some fertilizer at the bottom of the pit as base fertilizer, and then fertilize before the tree germinates in the next year, and you can also use inorganic fertilizer or manure to irrigate, and you can not be too close to the sapling when spreading, otherwise it will burn the rhizome of the sapling.

Seedlings just germinate can not be fertilized, seedlings in the planting, has applied base fertilizer to them, the nutrients in the soil are enough for the seedlings to grow, if you continue to fertilize when just germinating, the fertility in the soil is too large, the fragile roots of the seedlings will be burned out, it is best to fertilize when the seedlings grow 5-6 true leaves, choose a balanced water-soluble fertilizer, apply to the root system 5 cm away.

Seedlings just germinate can not be fertilized, seedlings in the planting, has applied base fertilizer to them, the nutrients in the soil are enough to make seedlings grow, if you continue to fertilize when just germinating, the fragile root system of seedlings will be burned out, affecting the healthy growth of plants.

After the seedlings germinate, it is suitable to fertilize when 5-6 true leaves grow, at this time, you can choose a balanced water-soluble fertilizer, dilute it, and irrigate along the position 5 cm away from the seedling roots, which helps the root system to absorb and is not easy to burn the roots.

Seedlings are young plant bodies in the early stage of growth after seed germination, such as the germination of peanut seeds, which has the characteristics of cotyledons unearthed and cotyledon soil, its epicotyl and germ grow faster, and the hypocotyl also grows accordingly, so when sowing deeper, the cotyledons are not unearthed, and when the sowing is shallow, the cotyledons can be seen exposed to the ground.

When the seedlings germinate, the radicle first extends into the soil to form the taproot, and then the hypocotyl elongates to push the cotyledons and germ out of the soil surface, and the cotyledons of such seedlings are in an unearthed state, such as soybeans, cotton and various melon seeds, and the nutrients in the cotyledons will wither and fall off after being exhausted.