What is the reason for the delay in the growth of vegetables after planting?

There are many vegetables around Kunming that are grown in plastic greenhouses, and the advantage of this planting method is that vegetables can be grown all year round. These greenhouse lands have been used for more than 10 years, rarely have been used for 3 or 4 years, and a large number of chemical fertilizers and pesticides are used all year round, and the soil may have certain problems over time. For example, soil fertility declines, organic matter is insufficient, microorganisms are insufficient, and trace elements are insufficient.

If these problems are not solved, we will not be able to grow high-yield and high-quality vegetables, and in serious cases, we will not be able to grow vegetables, and one may die. The soil in the plastic greenhouse vegetables is used all year round, for more than 10 years, at least a few years, the organic matter, microorganisms, trace elements, etc. previously contained in the soil have disappeared, and continuous fertilizer supplementation is needed. Extensive use of chemical fertilizers, unscientific and reasonable fertilization, poor plumbing, etc. can cause soil problems.

Continuing to grow the same crops, commonly known as extended cropping, relies on excessive chemical fertilizers, resulting in a reduction in soil organic matter, resulting in very bad good results. In addition, the long-term use of groundwater for irrigation may accumulate large amounts of toxic substances, resulting in a verdict. After the soil is solidified, the roots and microorganisms present in the soil respirate because there is no space to store oxygen in it.

Bad, resulting in a decrease in the conservative fertilizer capacity of the soil, the rapid loss of water and fertilizer applied in the soil, the inability of crop roots to absorb enough nutrients, the inability of crops to grow normally, the weakness of seedlings, slow growth, and malnutrition.

and other phenomena appear.

Crop rotation allows for a balanced use of nutrients in the soil.

Combine land and fertile land. Eliminate and reduce the loss of pests and diseases unique to specific crops. The use of stericins secreted by the roots of previous crops can inhibit the occurrence of diseases of marquis crops such as sugar beet, carrots, onions, garlic, etc., and can inhibit the occurrence of potato late blight, and the exudates of wheat roots can inhibit the growth of thatched roofs.

The front of the spring cucumber.

Mainly autumn vegetables and spring vegetables.

Yuedong cuisine and marquis have a variety of autumn vegetables, summer and autumn cucumber front hu is suitable for all kinds of spring and summer vegetables, and back hu is suitable for Yuedong cuisine or spring vegetables. Cucumbers and tomatoes inhibit each other and cannot be mated with crop rotation.

3 5 years of crop rotation, and eggplant and crops are not ripe, the previous crop has a variety of leafy vegetables and root vegetables, the latter crop can also be leafy vegetables and root vegetables, between short-term crops or vegetables, there are **, such as soybeans, cabbage, bulb fennel, onions, garlic, etc. and intercropping before the beard is overwintering leafy vegetables, can be and early ripening cabbage, early cabbage, spring radish, carrots, cherry wood.

Vegetables with short growth organs can be planted together, and autumn vegetables such as cabbage can be planted after beard. It should not be combined with eggplant crops, and should not be intercropped with short-stem crops such as leafy vegetables, root vegetables, and peanuts. Avoid continuous cropping.

Yin Jue 3 5 years. Don't find fault with other cucumbers or old vegetable gardens. Cucumbers are best used as leafy vegetables, and then as wild vegetables.

It can significantly increase production.

The quality of the seedlings is not good, the growth is weak and not robust, and the live trees are relatively slow after transplanting.

Therefore, when planting vegetables, it is recommended that it is best not to use weak seedlings, and select seedlings with vigorous growth, lush branches and leaves, and developed root system.

It's probably because it lacks nutrients and it doesn't have enough water, so it doesn't grow.

Because I didn't water the vegetables after planting, the seeds of the vegetables grew very slowly without water, and they were always so high.

For starters, it can usually be some special varieties or delicate varieties of vegetables. This vegetable variety is usually a hybrid that has just been planted, and most of it is difficult to grow or not suitable for the local climate. The seeds of this vegetable are difficult to germinate after being bought.

When choosing vegetable plants, it's best to buy plants that sprout easily, grow easily, and can be grown locally. In addition, observe the sowing time of vegetables and avoid off-season planting, suitable vegetables for beginners are tomato peppers, cabbage, spinach, spinach, cabbage, radish, potatoes, etc.

Most fruits and vegetables need more than 6 8 hours of direct light to thrive, vegetables that are resistant to semi-shade only need about 4 6 hours of direct light per day, especially plants with inner shade should also shine for more than 3 hours a day, and cannot be kept in a completely cool place. Without sunlight, vegetables won't grow well. Especially for Neiyin spinach, grow vegetables away from trees and don't add too many rotten leaves to the vegetables.

Otherwise, the acidity of the soil may become too strong. Use fertile, loose, well-drained soil as much as possible and add plenty of compost soil. Vegetables need a lot of nutrients during their growth.

Vegetables should not grow in soil that is too acidic or too alkaline, and to keep the soil slightly acidic and loose, it is necessary to add more organic soil, including common compost soil or humus, so that you can add rancid fertilizer to the bottom of the pot.

Unless you plant vegetables with a lot of water, such as ginger, taro, and water-cooled, avoid frequent soil moisture, avoid soil waterlogging, and ensure that the soil is well drained. Add fermented chicken manure and herbs to the substrate. Grass wood is organic potash.

Potassium promotes the utilization of light energy in vegetables, promotes the operation of photopolymers, and effectively promotes the growth of underground roots and stems of root vegetables. Fruits and vegetables should be supplemented with fertilizers containing phosphorus. Phosphorus is involved in photosynthesis in plants.

Promote the formation and growth of early roots, improve the ability of plants to adapt to the external environment, and improve the disease resistance of vegetables. Phosphorus can also promote flowering and fruiting, and improve the fruiting rate of fruits and vegetables.

Why is the food on the balcony long? The limited space for planting balcony vegetables restricts the utilization of balcony vegetable resources, including soil fertility, sunlight fertilizer regulation ability, and the spread of pests and diseases. Therefore, an easy way to grow balcony vegetables well is to thicken the soil layer and improve the regulating capacity of the soil, which can also be improved in terms of water and fertilizer.

But for most friends who plant on their balconies, this is not realistic. Since then, container cultivation has been restricted, and the space for balconies has also been restricted. Therefore, to solve this problem, it is necessary to pay more attention to the management aspect.

The root system of potted vegetables is difficult to grow, and the vegetables cannot fully obtain nutrients for photosynthesis and cannot provide sufficient nutrients. So potted vegetables do not grow all the time.

This may be because the soil is not fertile enough, so we should plant it in another place, because the soil in this place is no longer able to grow these vegetables.

1. Insufficient sunlight is not conducive to the photosynthesis of vegetables; 2. Soil agglomeration; 3. Insufficient fertilizer. Vegetables grown in pots lack fertilizer, and vegetables do not grow easily.

The abstract should be a matter of soil or nutrients. If the soil is sandwiched with gravel or has a heavy texture, a particularly low organic matter content, or the soil is slightly acidic and has a water table, it is sometimes difficult to grow even if the vegetables are grown until the soil is improved. In addition, whether it is the cultivation of vegetables or other plants, they need enough nutrition, and if the nutrition is not good, it will not grow.

What is the reason why the vegetable plot does not grow.

It should be a matter of soil or nutrients. If the soil is sandwiched with gravel or has a heavy texture, a particularly low organic matter content, or the soil is slightly acidic and has a water table, it is sometimes difficult to grow even if the vegetables are grown until the soil is improved. In addition, whether it is the cultivation of vegetables or other plants, they need enough nutrition, and if the nutrition is not good, it will not grow.

I hope it can help you, if it's convenient, please help me like it, thank you.

After the vegetable is planted, the focus is to promote the growth of the root system, once the root system is poorly grown, it is very unfavorable to the cultivation of strong trees. So, what are the reasons why it is difficult for the root system to take root after vegetable colonization?

1. Changes in the root environment.

At present, most of them are factory substrate seedlings, which are characterized by good aeration and water permeability, which is very suitable for the expansion of the root system, and the factory seedlings have relatively strict control over the root environment, and the root growth environment is very clean.

The greenhouse soil environment is very complex, with many harmful microorganisms, inconsistent texture and substrate, concentrated mineral nutrients, etc., and the vegetable roots after planting should have a gradual adaptation process from the substrate to the soil.

Once the soil environment becomes very harsh, and the roots in the substrate are difficult to adapt to the soil, then it is difficult for the vegetable roots to take root.

With the extension of greenhouse planting time, the soil environment is getting worse and worse, and the root growth of planted vegetables will often occur due to the huge drop from the substrate to the soil.

Therefore, ensuring that the soil environment is in a healthy and stable state is the basis for the smooth rooting of vegetables after planting.

2. The fertilizer is too concentrated.

When the amount of manure is large, if the rotary tiller is used to plough the ground, in the case of shallow ploughing depth (no more than 20 cm), a large amount of fertilizer is concentrated in the soil layer of 0-20 cm on the surface, then this will have a very big impact on the vegetable root system.

Due to the concentration of fertilizer, the concentration of soil solution will appear after watering the seedlings.

In the case of too high, the root system undergoes plasmo-wall separation in a high concentration of soil solution.

As a result, there is a lack of water, which eventually leads to the death of the root system.

Therefore, it is recommended that vegetable farmers should plough more than 30 cm after using base fertilizer, which can not only ensure the uniform distribution of fertilizer in the soil, but also break the bottom layer of the plough and reduce the harm of excessive concentration of fertilizer.

3. The surface temperature is too high.

The soil temperature suitable for root growth is between 12 and 20, and the surface temperature can usually reach about 25 in summer under strong direct sunlight. Moreover, high soil temperature accelerates water evaporation, which is not conducive to root growth.

Therefore, proper shading should be carried out after vegetable planting, not only to reduce the amount of leaf transpiration, but also to keep the soil temperature in the conditions suitable for root growth.

4. Soil quality problems.

Although the sticky greenhouse soil has good water and fertilizer retention, it is not conducive to root growth due to the lack of air in the soil.

In addition, the poor growth of the root system of the seedling itself is also the reason why it is difficult to take root after planting, after the seedlings should carefully observe the growth of the root system of the seedlings, the strong root system is manifested as white and developed root hairs, and it is best not to use the seedlings with few root hairs and yellowing and browning.

Environmental changes Before the transplanting of vegetables, it is an environment for seedlings, and this environment is an ideal environment for the growth of vegetables. After transplanting, the vegetable seedlings suddenly change to a growing environment, and a slow adaptation process is required. When the environment is harsh, it becomes difficult for vegetable seedlings to root down.

Vegetable seedlings do not grow after planting, and the seedlings in the hole tray grow neatly, but after planting, there is a situation of large and small seedlings, and the growth is very uneven.

Many people will sprinkle some green vegetable seeds in the vegetable garden, and wait about 40 days to eat fresh green vegetables. However, the management of these 40 days is also very critical, some greens look lush, and some greens due to improper management, there are dry, weak growth, and low yield.

The management of greens is mainly water and fertilizer management, and some people will ask: Isn't watering greens the easiest? If you pour it on the surface of the soil, will it also go wrong? Green cabbage is also known as water cabbage, and in the process of planting, watering is very important.

When sowing, keep the furrow moist and then sow the seeds. If it is already soaked, you can sow it first and then water it. During the germination of seeds, the soil should be moist, and it is conducive to germination when it absorbs enough water.

Therefore, before and after sowing, the soil must not be too dry. In some areas, autumn is hot and dry, and after sowing, it is necessary to water frequently. However, if you water too much, the soil will be compacted, which is not conducive to the germination of seeds.

When the seedlings do not emerge after sowing, a small amount of water can be watered first.

Then when it comes to the seedling stage of green vegetables, there is also a difference between watering and germination period, and the combination of promotion and control is combined. In the early stage of seedlings, water frequently, water a small amount of water, reduce soil temperature, and reduce the occurrence of viral diseases. As the seedlings grow, reduce the number of watering times to prevent the leaves from growing.

For example, after celery is planted, it is necessary to properly control water and fertilizer to promote the root system to take root, and enhance the ability to absorb water and fertilizer in the later stage of growth. Wait until the soil is particularly dry before watering, and do not water the soil until it is dry. Of course, there are also some vegetables with a relatively short growth period, such as cabbage, Shanghai greens, lettuce, etc., which can be kept moist without squatting.

During the vigorous growth period of green vegetables, the leaves grow rapidly, the need for water and fertilizer increases, and there can be no drought in the field. If the field is too dry, the plant growth is weak, the yield is low, the crude fiber increases, and the taste is poor. Farmers should water according to the soil conditions, but they should pay attention to watering during this period and water evenly.

If you don't water for a long time, when the soil is particularly dry, you should only water it once, which will also affect the root growth. Generally, water once every five or six days, water 3 or 4 times before harvesting, and stop watering four or five days before harvesting.

This is because the green vegetable seedlings planted are not of good variety, and there is too little water and no fertilizer, so they do not grow well.