What are the consequences of not watering the bottom water thoroughly when planting vegetables?

The roots of vegetables will not grow well, which affects the absorption of water, and finally leads to poor quality of vegetables, which cannot be sold, and they lose money, so we should water thoroughly when we water.

When planting vegetables, if the water is not thorough, then the vegetable rhizomes will not be able to absorb water, so they will not be able to grow well, and they may not be able to think of it, or they may wilt.

Planting vegetables needs to be watered, and watering can not be too much and not too little, if too much watering will make the vegetables die because of poor air permeability, if too little will cause the vegetables to die due to lack of water absorption.

The low temperature hazard caused by the low water temperature when watering vegetable seedlings in early spring refers to a common physiological disease caused by low temperature. Low temperature hazards can be divided into two types: one is when the temperature is low to below O, the water between the cells of vegetables freezes, resulting in cell rupture and death, which is often called frost damage; The other is that the temperature has not yet reached freezing.

When planting vegetables, the bottom water can not be watered thoroughly, which will have a certain impact on the seeds, and the seeds will not absorb enough water, and the germination will be slow and the seedling stage will be prolonged. When watering the bottom water, water often accumulates on the surface of the substrate, but the underlying substrate still does not absorb the water. If it is not sown in time, it is easy to cause the bottom water of the plant to be watered thoroughly, resulting in slow seedling emergence and uneven seedling emergence, which will bury hidden dangers for seedling management and cultivation of high-quality strong seedlings in the later stage.

The correct way to water the bottom water is that an important principle of watering the bottom water is that the bottom water should be sufficient, and it can be watered at a uniform rate for many times in a row. An intuitive criterion for judging the empty roll of the bottom water is to water it lightly when watering, and when there is a small amount of water seeping out of the leaky hole of the seedling tray or nutrient bowl, it means that it has been watered thoroughly.

Summer watering is best in the morning rock loss in the morning, exceeded.

Pour it after 9 or 10 o'clock. Because it is almost noon, the sun is strong, the surface temperature is extremely high at this time, the water temperature is low, and a large amount of watering will weaken the metabolism of vegetable roots. As a result, production was reduced.

Although the temperature is high in summer and the water evaporates easily, large-scale irrigation cannot be used. Flood irrigation with large water and coarse liquid in the field is easy to cause water accumulation in the field, affect root respiration, and is very prone to root rot, resulting in root rot, which seriously affects the quality and yield of vegetable planting. In particular, some vegetables that are afraid of waterlogging, in the summer, we must pay attention to the amount of watering can not be too large, in order to avoid the lack of water in the root system on the side of the ditch, it is best to choose the large and small rows of alternate watering.

In the fruiting period of nightshade fruits and melon vegetables, it is easy to cause fruit cracking if the uniform water demand is dry and wet. Therefore, when there is a drought in summer, it is necessary to water in time to keep the soil moist, but the amount of watering should not be too large, and it should be drained in time after rain, so as not to cause the fruit to crack due to excessive water absorption. Water vapor is relatively contradictory, the water vapor in the soil will be squeezed out when the water is large, which will inevitably cause poor air permeability, so it is necessary to pay attention to the amount of watering should not be too large, avoid flood irrigation, and use micro irrigation or drip irrigation in areas with conditions.

Poor watering of the bottom will cause vegetables to not absorb enough water, which will slow down the growth rate.

The sprouting is slow, the seedling period is prolonged, and the seedling emergence is slow or even uneven in the development process, which lays hidden dangers for the later seedling management and the cultivation of high-quality strong seedlings. Sultan.

It will have a great impact on the growth of raw paulownia vegetables. It will lead to a decrease in the yield of vegetables, and will also affect the growth and development rate of vegetables, and will also cause wilting.

If we grow vegetables, we must water the bottom water thoroughly. This actually helps the vegetables to sprout, but if the vegetables don't sprout, how can the cherry blossoms grow?

Vegetables can be watered just after planting, and when vegetables are just planted, they need to be filled with enough water, because vegetable seeds need more water during the germination period. When the aboveground functional leaves and edible organs are vigorous, they need more water, so they should pay attention to irrigation. When the root system grows, the soil moisture is required to be suitable, the water can not be too much, and the middle void is mainly cultivated to protect moisture, and generally less or no irrigation.

According to the shape change of the leaves, the color of the shade, the length of the stem nodes, the thickness of the wax powder, etc., determine whether to irrigate. For example, if the leaves droop in the morning, the leaves wilt seriously at noon, and it is not easy to recover in the evening, it means that there is a lack of water, and it should be irrigated in time.

Tomatoes, carrots and other leaves are dark, and there is wilting at noon; Or cabbage, onion leaf color gray blue, surface wax powder, the leaf brittle and hard when it means lack of water, to water reasonably.

In fact, after the vegetable is planted, it does not mean that everything is fine, in fact, this is the first step of the long march. Some young people, after the vegetable is planted, it is like planting a tree, and they immediately water it, in fact, this is not the right practice, and it is easy to lead to the phenomenon of vegetable rooting.

The reason why you can't transplant vegetables is like transplanting saplings, and you can't water them right away. That's because the root system of vegetables at this time is still relatively fragile, and also because transplanting can be damaged. At this time, if you water too much, then its water absorption ability is not strong, so that the root system has been soaked in water, and the roots will naturally rot.

<> experienced vegetable farmers know that transplanting vegetable seedlings is generally in rainy weather, that is, it has rained before, and it is mainly in the afternoon. Therefore, such soil is actually moist in the first place, so it does not need to be watered in time. We just need to keep its soil moist.

If the vegetable seedlings have been rooting because of wrong watering, there is no need to worry about this, hoeing them in time to increase the air permeability of the soil can be effectively alleviated. If possible, at the next watering, you can add some fertilizer that is conducive to rooting.

Vegetables like water and fertilizer, so water and fertilizer management is a very important part of planting vegetables. So how do you go about watering? The general principle is that according to the different needs of different vegetables for water and fertilizer, they should be treated differently, and those that need more water should be watered more, and those that need more water should be watered less.

But it's not like more water is better. Weilong thinks that it should not be dry or wet, and it is best to do drought and waterlogging and drainage.

Watering vegetables, one is to be flexible according to the soil moisture and weather temperature, when it should be watered, when it should be watered, when it should not be watered, do not water. For example, if the soil moisture is relatively good, or the temperature is not high, the weather forecast will rain in the near future, do not water. The second is to water vegetables as much as possible not to flood irrigation, should be sprinkled irrigation, or sprinkled is better.

The infiltration of flood irrigation is relatively shallow, and the soil is easy to compact, and the effect is not good.

There are relatively few vegetables that do not need to be watered, and there are generally only a few kinds such as artichoke, chili, garlic and okra. Artichoke is very drought tolerant and does not require too much water, chili peppers only need to keep the soil from drying out, okra can withstand prolonged drought after ripening, and garlic does not have a high need for water.

1. Artichoke

Vegetables generally need a lot of water to ensure the progress of their growth and development in the growth and maturity period, so there are relatively few plants that basically do not need watering, and the more characteristic is artichoke. Artichoke is cultivated in summer and harvested before winter, and is highly drought tolerant and does not die during prolonged droughts in autumn.

2. Chili peppers

Chili pepper is also a drought-tolerant vegetable, as a very widely used seasoning vegetable in life, there are many different types of chili peppers, the degree of spiciness and water demand are generally inversely proportional, the more arid the pepper that does not need water, the higher its spiciness and spicy content tends to be.

3. Garlic

Garlic is also a very common dry breeding crop, is a relatively cold and drought tolerant seasoning vegetables, can maintain the growth trend throughout the winter in the cold and dry state to continue to grow, garlic in winter is also difficult to absorb water in the soil, has a very strong drought tolerance, basically do not need to water after maturity.

4. Okra

Okra is a crop of arid agriculture known for its heat tolerance and drought tolerance, this vegetable with a hard and smooth skin has a good ability to retain water, and will not easily shrink and dry up in the dry season and when the water supply is insufficient for a long time, and can remain relatively active and fresh for a long time.

Reasonable watering is an important measure to ensure the healthy growth of greenhouse vegetables and improve the yield. In view of the low temperature in winter and the high humidity in the shed, the following matters should be paid attention to when watering vegetables in the greenhouse:

1. Pay attention to growth.

Look at the growth of the plant, usually when the plant is short of water, the leaves will wilt, the growth will be weakened, and the fruit umbilical rot will occur more, so it should be replenished in time.

2. Pay attention to moisture.

It depends on the soil moisture, if the greenhouse soil is not dry when watering, it is not only not conducive to the improvement of ground temperature, but also easy to cause poor soil permeability, resulting in lack of oxygen in the root system, the formation of roots, and the phenomenon of yellow leaves.

3. Pay attention to the weather.

Before watering, be sure to watch the weather forecast, not only to choose a sunny day for watering, but also to ensure that there are 2 3 days of sunny days after watering, so as to prevent rainy weather after watering, resulting in increased humidity in the shed, lower ground temperature, and frequent diseases. In the deep winter, it is more necessary to pay attention to the fact that even the first two days after the cloudy day is suddenly sunny, it is not suitable for watering, and the greenhouse temperature should be improved first, so that the plants can return to normal before watering.

4. Pay attention to the ground temperature.

The average ground temperature suitable for the growth of vegetables is about 22, and in the deep winter, the temperature in the shed is more than 15 20, if the watering is excessive or the watering opportunity is not right, the ground temperature will drop rapidly, forming a root injury, endangering the growth of the aboveground part of the plant, therefore, the watering at low temperature is best to stop after pulling the grass in the morning.

5. Pay attention to covering the mulch.

Masking mulch film can not only reduce the evaporation of water in the air, adhere to soil moisture, reduce the number of watering, reduce air humidity, reduce the onset of diseases, but also improve the ground temperature and speed up the growth of vegetables.

6. Pay attention to moderate watering.

Watering vegetables in winter and spring sheds, generally follow the criteria of no lack and no watering, rather dry than wet, adhere to the water content of vegetable rhizosphere soil at about 60%, avoid too much and too frequent watering, and avoid flood irrigation. Overwatering can easily reduce the air temperature and soil temperature in the shed, which is not good for the growth of vegetables. It should be watered frequently with small water, or water from a kettle to the plant.

7. Pay attention to regulating the water temperature.

When the water temperature is more than 5 different from the temperature in the shed, it is easy to form root damage. It is better to use deep well water with higher water temperature or pre-storage in the shed for irrigation.

8. Pay attention to the management after watering.

In the first two days after watering in winter, the temperature should be raised to about 40 at noon, and the temperature in the shed should be improved for 1 hour. Then increase the ventilation volume to reduce the humidity in the shed.

The time of watering, the number of times of watering, the frequency of watering, the amount of watering, how much to water at one time, and how often to water.

If you want to water your vegetables, you should also pay attention to the time issue, so it is best to water them in the morning or evening.

You need to pay attention to the amount of watering. If you water too much, the vegetables may rot the roots.