What fertilizer should not be applied to leeks? What fertilizers should not be applied to leeks?

Planting leeks should avoid applying these three fertilizers.

1. Nitrate nitrogen fertilizer.

Leeks like nitrogen, nitrogen fertilizer for the growth of leeks has played an important role in promoting, but in the application of nitrate nitrogen fertilizer should be noted, the concentration is too high easy to burn roots and fertilizer damage, so if the application of nitrate nitrogen fertilizer should be controlled, not too much at one time, even on cloudy days to reduce the amount of use, can not be mixed with compound fertilizer and water soluble application.

2. Undecomposed farmhouse fertilizer (also known as organic fertilizer).

1) Farm fertilizer includes human manure, manure, livestock and poultry manure, etc., its advantage is that the nutrients are relatively comprehensive, abundant, easy to take materials, low production cost, and also has a very large ability to improve soil fertility, which is a very ideal fertilizer for crop planting. The fertilizer effect of farmhouse fertilizer is slow and lasts for a long time, and it has an irreplaceable role as a base fertilizer.

2) But the use of farmhouse fertilizer needs to be fully decomposed, on the one hand, the nutrients in it can be effectively absorbed, on the other hand, the unrotted farmhouse fertilizer will release a lot of heat in the process of fermentation, if directly applied will burn the roots of crops and even burn the crops, at the same time, there are many harmful bacteria and pests and diseases in the unrotted farmhouse fertilizer, which will cause harm to crops.

3) Therefore, the farmhouse manure can only be used after it is fully decomposed, that is, it is piled up for more than 60 days, it becomes black and rotten, there is no big lumps, and it feels loose and soft when grasped by hand.

3. Ammonium carbonate (ammonium bicarbonate).

Ammonium carbonate is also often used as a nitrogen fertilizer, which can promote the photosynthesis of crops and promote seedling growth. But it has a disadvantage, that is, it is volatile, the utilization rate of nitrogen is relatively low, and if it is not properly disposed of, there is too much residue on the surface, and the ammonia formed by volatilization will smoke the leaves of leeks, so it should be applied in a ditch and covered with soil in time.

Leeks have the reputation of "lazy vegetables", but they are fertilizer-loving crops, whether they grow fast or not, whether the leaves grow well or not, a very key influencing factor is the fertility of the soil. Leeks need fertilizer mainly with nitrogen fertilizer, and then with some phosphorus and potassium fertilizer. And when fertilizing leeks, there are two main points to remember:

The bottom fertilizer should be sufficient, and the appropriate amount of top dressing should be done at the right time.

Whether you are planting leeks on the balcony or growing leeks in the rural garden, the base fertilizer must be sufficient. In terms of the choice of base fertilizer, it is recommended to give priority to farmhouse fertilizer, such as fully decomposed chicken and duck manure contains a variety of elements, after decay, with the sudden soil ploughing, and then transplanting or sowing leeks, it is a very good choice.

Now there are fewer chickens and ducks in the countryside, and some people also feel that the chicken and duck feces smell bad, and it is more troublesome to rot. In this way, we also try to use soybean fertilizer. Put the soybeans in a plastic bucket, then add an appropriate amount of water to cover the soybeans, leave them for about a week, and then bury them in the ground as base fertilizer, which can be applied 200 300 kg per mu.

If none of these are available, then you have to choose chemical fertilizer, because leeks like nitrogen fertilizer, you can choose nitrogen, phosphorus and potassium compound fertilizer as the base fertilizer.

If the base fertilizer of leeks is very sufficient, then in the summer there is generally no need for top dressing, because the temperature is high during this period, there is a lot of rain, and the growth of leeks is relatively slow, so the leeks are generally not cut in summer, so there is no need for top dressing. However, after autumn, leeks ushered in the peak season of growth, and during this period, it was necessary to top dressing in time, so as to promote the rapid growth of leeks. For leek top dressing, it is recommended to use soybean cake fertilizer as before, if not, choose the degree of nitrogen, phosphorus and potassium three elements, and the application rate per mu is 30-40 kg.

Friends who plant leeks are very clear that the leeks planted that year are not harvested, mainly for the poplar roots, so the leeks planted in the year are generally not harvested. In the spring and autumn of the second year, the harvest season of leeks has arrived, and after each harvest, we must remember to apply nitrogen fertilizer 1 or 2 times, which is to supplement nutrients, so that leeks can grow rapidly, and prevent leeks from causing premature plant senescence due to nutrient loss caused by harvesting. The general topdressing method is 2-3 days after the leek is harvested, that is, the wound of the leek has healed before topdressing, which can be combined with watering 7-10 kg of topdressing urea per mu.

The best fertilizer for growing leeks is organic fertilizer, as this effectively avoids soil acidification in the growing area. Especially in late autumn and early spring, more manure should be applied to biogas slurry, plant ash, chicken and duck manure, etc., which can not only help increase the ground temperature, but also allow leeks to be harvested and marketed early.

1. Leeks should not be applied to the fertilizer nitrate nitrogen fertilizer, if you want to make the leeks grow better, you can apply nitrogen fertilizer, you must know that nitrogen fertilizer can better promote the growth of leeks, although nitrate nitrogen fertilizer is also very good, but its concentration is very good, if you want to use, you must control the concentration, otherwise there will be fertilizer damage, use it in bad weather, but also pay attention to the concentration, to avoid damage to plant roots.

2. Do not use organic fertilizer for leeks, in fact, organic fertilizer is not decomposed organic fertilizer, such as manure, agricultural fertilizer, etc., which are not suitable for the maintenance of leeks, these undecomposed fertilizers are easy to cause damage to the roots of plants, and at the same time, they are prone to such pests and affect the growth of leeks.

3. Ammonium bicarbonate (ammonium bicarbonate) is also not suitable for the maintenance of leeks, and the use of this fertilizer is easy to affect the root growth of leeks, and the leaves will also be damaged.

What kind of leeks are good to use in the growing season, and how much is the content.

What fertilizer can leeks grow vigorously and what fertilizers do leeks need.

If you want leeks to grow well, you need to understand the law of nutrient demand during its growth, and then carry out scientific fertilization, as follows:

Fertilizer, leek planting base fertilizer must be sufficient, which is to ensure the nutrient needs of leeks throughout the growth period, determined by agricultural professionals, can be an acre of land and 667 square meters of organic fertilizer after decomposition and fermentation of about 4000 kilograms, if the soil is relatively short of fertilizer can be applied to 40-20 kilograms of sulfur-based compound fertilizer.

2.Top dressing, leek top dressing time generally to 5-10 cm when the time begins, at this time the nutrient demand rises, at this time can be water-soluble fertilizer for root irrigation top dressing, or spray foliar fertilizer, basically these two fertilizers if the quality is qualified, the nutrients can meet the growth needs of leeks, such as boron B, copper Cu, iron Fe and other elements required for the growth of leeks. Poly Wuba water-soluble fertilizer can be used, which can be sprayed flush to supplement nutrients through the foliage.

3.Humic acids, because leeks are vegetables that are propagated by the root system, for this reason, if you want leeks to grow well, the soil can not be compacted or acidified, you can apply some humic acids such as potassium fulvic acid from polywuba mineral source when turning the ground and applying bottom fertilizer to improve the soil.

Leek foliar fertilizer usage.

If you use foliar fertilizer for leek topdressing, the usage is also relatively simple, and the amount of mu and water is controlled, as follows:

1.Concentration, the use of leek foliar fertilizer concentration requirements can only be low can not be high, can not think of high concentration of nutrients, can make leeks grow better and other ideas, this is wrong, the general foliar fertilizer 30g need to be mixed with about 20 kg of water, fully dissolved and stirred, specifically see the specifications of the amount of water.

2.Time, spraying foliar fertilizer on leeks is recommended to be planted in the morning and evening to reduce foliar evaporation, the time is just the opposite in winter, the temperature is low in winter, at this time it can be better before ten o'clock in the morning to four o'clock in the afternoon, the temperature in the shed is high, and the efficiency of leeks to absorb nutrients is also high.

3.The growth time of each stubble of leeks is short, so it is enough to spray foliar fertilizer on leeks every ten days.

How to make leeks grow thicker and thicker: When planting leeks, just sprinkle a little bit of it, which is better than the fertilizer you bought.

Answer 1: Leek is a perennial root vegetable, which requires a large amount of fertilizer during the growth period, and after each harvest, it also needs to be topdressed to promote the growth of leeks. If you only need leek leaves, you need to apply nitrogen fertilizer, and if you want to flower and bear fruit, you need to apply phosphorus fertilizer, potassium fertilizer before flowering.

2. The first year: before sowing, deep ploughing, and then apply 5000kg of decomposed organic fertilizer, 20kg of ammonium sulfate, 20kg of diammonia sulfate per mu, and at the same time, 2kg of 5% phosphine granules per mu can be used, and 10-15kg of dry fine soil is mixed and sprinkled to control leek maggots. After the emergence of seedlings, if the seedlings do not grow well, they can be sprayed with foliar fertilizer or 5kg of urea per mu.

Wait until the seedlings grow to a certain height for transplanting, before transplanting, apply 7000kg of rotted farmhouse fertilizer, 50kg of compound fertilizer, and 2kg of zinc sulfate per mu. After planting, after the end of the seedling period, a top dressing is carried out, and about 20kg of urea or diamine phosphate is applied per mu.

3. The second year and beyond:

1) When the leeks are green, 4000kg of human feces or 20kg of urea are applied per mu of land at the same time as cultivating to promote the recovery of leek growth.

2) Top dressing is carried out 3-4 days after harvesting leeks, and 3000kg of pig urine manure of 3000kg per mu is applied, or 80kg of rotted cake fertilizer, or 20kg of urea, or 20kg of ammonium sulfate compound fertilizer. Be careful not to rush to water, otherwise the leek roots will rot easily.

3) Before leeks are sprouted, apply 15-20kg of urea per mu. After entering autumn, it is the most vigorous period for the growth of leeks, so during the period before and after the beginning of autumn, 300-400kg of cake fertilizer is applied per mu to raise roots. When watering frozen water, apply 10-15kg of ternary compound fertilizer per mu.

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If leeks do not need to flower and bear fruit, but only need to grow leaves, nitrogen fertilizers such as urea, human urine, etc. If you need to flower and bear fruit, you should apply some phosphorus and potassium fertilizers before flowering, such as plant ash, other fertilizers that are well decommodated, etc.

In addition to the application of base fertilizer, leeks also need to be "knife top dressing", that is, top dressing 1 2 times after each harvest. Top dressing should be carried out 3 4 days after harvesting, and when the wound of harvest heals and new leaves grow, it is easy to cause fertilizer damage immediately after harvesting. Top dressing should be based on fast-acting nitrogen fertilizer and human manure and urine, which can be applied with water or ditching, and the manure dilute water must be fully rotted to prevent maggots.

The seedling land should be convenient for drainage and irrigation, and the sandy loam or clay soil soil that has not been planted with onion and garlic vegetables in the past 1-2 years should be deeply cultivated before winter, watered with frozen water, and raked and cultivated in the next spring to protect moisture. Apply 4-5 cubic meters of rotting farmhouse fertilizer per mu. In order to prevent leek maggots, 5% phosphine granules can be used 2kg per mu, add 10-15kg of dry fine soil, evenly sprinkled, fine rake after shallow tillage, leveling furrow, furrow width, length 7-10m, easy to manage.

1. Leeks should not be applied to nitrate nitrogen fertilizer, if you want to make leeks grow better, you can apply nitrogen fertilizer, you must know that nitrogen fertilizer can better promote the growth of leeks, although nitrate nitrogen fertilizer is also very good, but its concentration is very good, if you want to use, you must control the concentration, otherwise there will be fertilizer damage, use it in bad weather, but also inject the unintentional concentration, to avoid damage to plant roots.

2. Do not use organic fertilizer for leeks, in fact, organic fertilizer is not decomposed organic fertilizer, such as manure, agricultural fertilizer, etc., are not suitable for the maintenance of leeks, these undecomposed fertilizers are easy to cause damage to the roots of plants, and at the same time, they are prone to such pests, affecting the growth of leeks.

3. Ammonium bicarbonate (ammonium bicarbonate) is also not suitable for the maintenance of leeks, and the use of this stupid crack fertilizer is easy to affect the root growth of leeks, and the leaves will also be damaged.

Leeks should not be fertilized: organic fertilizer, ammonium bicarbonate.

1. Organic fertilizer.

Leeks should not use organic fertilizer, in fact, organic fertilizer is not rotted organic fertilizer, such as manure, agricultural fertilizer, etc., are not suitable for the maintenance of leeks, these unrotted fertilizers are easy to cause damage to the roots of plants, and at the same time, they are prone to such pests, affecting the growth of leeks.

2. Ammonium bicarbonate.

Ammonium bicarbonate is not suitable for the maintenance of leeks, and the use of this fertilizer can easily affect the root growth of leeks, and the leaves will also be damaged.

Precautions for growing leeks

1. The temperature of leek seeds at the germination stage should be controlled at 15-18 degrees, and the covering soil should not be too thick to avoid not growing. When the seedlings grow 2-3 true leaves, they can chase the seedling fertilizer once, and water it in time after fertilization. When the seedlings have 4-5 leaves, they can be fertilized again, and the amount of fertilizer is basically the same as the first topdressing.

The seedling stage is about every 20 days, and the fertilizer can be chased once, and the drainage should be prevented from waterlogging, and the furrow surface should be kept dry and wet.

2. In the planting process of leeks, water and fertilizer should be in place, and irrigation and running horse water should be controlled.

3. Leek planting should choose the right soil, it is best to use fertile and loose, well-drained sandy loam soil for planting, before sowing the seeds need to be germinated, and then the germinated seeds can be sown in the soil prepared in advance, and in the later maintenance, it is also necessary to provide appropriate water and nutrients for the plant to help the plant grow more vigorously.

4. The cultivation and planting of leeks should pay attention to the lack of fertilizer and whether the soil is soft.

5. In the planting of leeks, foot fertilizer should be applied, watered thoroughly, and the soil should not be too thick after sowing.