When planting vegetables, how to get the right time to water them?

No matter what vegetables you plant, you should water the soles of your feet before the main meal or live broadcast, and when it is wet and dry, you can carry out the main meal or live broadcast, and then water the seedlings appropriately. The purpose of this is to ground, create an insulating layer of undried soil in the cultivated layer, and help take root and retain moisture. The stunt requires that the Chongqing loose soil take root first and promote rice transplanting, that is, adjust the upper temperature and water to make the lower part deeply rooted!

Generally speaking, on the moon hole membrane, vegetables should be watered for 30 to 45 days from the main meal to the next time, and they cannot be watered for a long time, and they cannot be watered for drought, and they can be properly watered for saplings that are not neat during this time.

The principle of watering depends on the specific moisture status of the soil, and the decision of watering is not to habitually investigate the number of days of watering. Midday when the sun is shining, the occasional withered plant, the idea of drought is not advisable. It is necessary to squat down and use your hands or tools to pick out the soil moisture below the index of 10 cm.

Gently grasp it with your hand to indicate that there is no drought. Otherwise, water.

Water is the source of life, and the survival and growth of any animal or plant is inseparable from the wetness of boiling water. Only in agricultural planting can the water content of crops exceed 80%, and the water content of some vegetable crops will be further increased! Water is also the basis of physiological activities such as photosynthesis, respiration, nutrient production, absorption, transformation, and transportation of crops, as well as the foundation of crop branches, leaves, flowering and fruiting.

So how do you water your crops? There are several small water supply methods that can be carried out according to the following summary.

More wet crops should be given and less cold crops should be given. Shallow-rooted crops should be poured frequently, and deep-rooted crops should be given less. Herbs and crops can be appropriately swollen, and woody crops can be appropriately less swollen.

Crops with large and soft leaves should be given more appropriately, and crops with small, hard leaves and wax on the outside should be given less appropriately. Crops can be appropriately poured more during the vigorous growth period, and less during the dormant protection period. Pregnant women, swollen fruit trees should fall more, flowering, and less when ripe.

If the climate is relatively hot, you should water more, and when the temperature is low, you should give less. Give more when the weather is dry, and less when the weather is cloudy. When crops lack water, plants shrink, lack of vitality, leaves, new leaves slightly wilted, drooping, lose luster, when severe water shortage, leaves turn green, yellow or wilted.

Insert a thin strip of wood into the soil to a depth of more than 10 cm, and then pull out the strip and you can see the soil brought. In other words, if the soil is wet, the soil will not be short of water, and the crops can be temporarily left unwatered. In other words, if the soil is relatively dry, or it has not been unearthed on the sticks, the soil will be short of water, and the crops should be watered in time.

When you first plant vegetables, you need water the most, so remember to water them. When the vegetables are older, they can be suitable for watering, but it is better to water them in the morning or evening.

When planting vegetables, it is generally watered after the soil is dry, usually in the early days, or in the afternoon. In the summer, it's best to do it in the afternoon or late afternoon, when there is no sun exposure. In winter, watering is mostly done at noon, and the low temperature will cause frostbite to the root system of vegetables.

Is it better to water in the morning or at night?

In fact, watering vegetables at these two points is a very good choice, and it is very beneficial to the growth of vegetables. If you are a very meticulous person, you can also choose a more suitable time for watering. If you are watering vegetables in spring and autumn, the difference between watering in the morning and evening is not very big, but if you are watering in the season when evaporation is very strong in summer, it is recommended that it is best to choose to do it at night, because watering vegetables at night can absorb more adequate water and fertilizer, if you choose to water in the morning, due to the hot weather, evaporation is vigorous, and the water may be evaporated soon, and it is not able to achieve the effect of watering well. And watering it at night will look more suitable.

Of course, the most unsuitable time for watering vegetables is noon, although vegetables may be very short of water at this time, but watering at this time can not alleviate the drought problem of vegetables, but it is easy to lead to the situation of "fried" roots of vegetables, resulting in the growth of vegetables is affected, and in serious cases, it will also cause the death of vegetables.

How to water vegetables better?

Watering is indeed a very important knowledge for vegetable planting, and here we will introduce a little knowledge about vegetable watering.

Watering in summer should not be flooded: In summer, the weather is hot, and many vegetables often have drought and water shortage, so watering is very important. Many vegetable farmers believe that vegetables need more water to grow in summer, and often use flood irrigation for watering, believing that vegetables can better absorb water, alleviate drought, and reduce the temperature of the growing environment.

In fact, the use of flood irrigation for watering is very unfavorable to the growth of vegetables, because flood irrigation will suffer from water accumulation in the field, resulting in rotten roots, yellow leaves, poor fruit growth and other conditions of vegetables. Especially for some vegetables that are not tolerant to waterlogging, it is undoubtedly a very serious hazard. Therefore, when watering in summer, we must pay attention not to flood irrigation to avoid water accumulation in the field.

If you want to water the vegetables after planting, they must be dry and wet. The problem that needs to be paid attention to is to see if there is oxygen in the soil, because if there is less oxygen in the soil, there is no way for vegetables to survive. Not only will there be decay, but even some microorganisms will appear inside.

When watering, you can use the way of sprinkling water slowly from less to more, and do not continue watering after reaching the standard. Plants can grow well when they are semi-dry and semi-wet, and can provide sufficient nutrients to the roots. <>

When watering, it must change with the season, and the temperature should be adjusted appropriately. Each vegetable needs a different temperature in different seasons, so be sure to water it once in the morning and once in the evening. In winter and spring, the temperature is relatively low, and if you water it coldly, it is likely that the seedlings will not be able to grow.

It is necessary to pour some warm water appropriately, so that the roots can slowly absorb better. In summer, the weather is hot, and the evaporation of vegetables will be relatively large. If you want your roots to absorb more water, you can choose to water it three times a day.

Be sure to pour cool water to ensure a sufficient supply of water. <>

The plants that grow will be different depending on the watering method during the growth period. More experienced farmers will choose to water more in the middle and late stages, and lay a good foundation in the early stage. The purpose is to ensure that the soil is moist so that the seeds can gradually bud.

After the buds are dewed, take a sprayer at home, water it gently in an atomized way, and let the seedlings quickly enter the vigorous growth stage. <>

In general, the problem that should be paid attention to when watering and fertilizing is the fertilizer that will be used for a while, and never go to wash it with water. Not only can the vegetables themselves not be absorbed, but it is even likely to affect the subsequent growth. When watering, it is best to make some drainage ditches to prevent the loss of fertilizer.

Organic fertilizer must be rotten when fertilizing, otherwise it is very likely that there will be insects after the seeds are planted.

First water: colonization water. The planting water should be watered thoroughly, which can accelerate the combination of seedling roots and soil in the shed, reduce the ground temperature, and be more conducive to slowing down the seedlings.

Because the soil in the shed before vegetable planting has been deeply turned, the ventilation is good after fertilization, and the seedlings have few roots and are mostly distributed in the 5 cm tillage layer, watering generally will not cause the root system to lack oxygen and dip the roots. The second water: slow seedling water.

Generally, about 6-7 days after the vegetable is planted, the amount of water should not be too large, it should be watered at five or six o'clock in the morning, when the difference between water and ground temperature is the smallest, and the impact on the root system is small. If you water it at ten o'clock or in the afternoon, it will often cause root damage due to high ground temperature and low water temperature. This watering can also add some raw materials that can promote root growth.

The third water: promote the water. It is advisable to water about 15 days after the seedling water, because this period of time is mainly to control the water and squat the seedlings, watering should not be too diligent.

In addition, the time and amount of watering are the same as those of slow seedling water.

Vegetables should be watered thoroughly after planting, so that the root system of the seedlings and the soil can be perfectly combined, and the ground temperature can be reduced as a whole; It is necessary to pay attention to the frequency of watering, and to slow the seedlings to water in the back, as much as possible to keep the water in a small state, it is best to choose the way to water with spray, and to separate the water with fertilizer.

It needs to be watered once after planting and then again after a week of growth. It is important to pay attention to the frequency of watering, but also to the way of fertilization, but also to the overall control, but also to pay attention to the degree of moisture of the soil, but also to pay attention to the nutrients of the soil.

Drip irrigation can be used for watering, pay attention to the growth of plants, and water appropriately according to the properties of plants.

Vegetables in greenhouses are watered in the morning, and vegetables in the open air are watered in the morning and evening.

When watering in a greenhouse, in addition to the temperature, you should also pay attention to the humidity in the shed. In general, it is more appropriate to water vegetables in the morning, starting at 9 a.m. The temperature is not particularly high in the morning, about 25, which is suitable for watering.

After watering, the humidity increases and can be properly ventilated.

If the vegetables are watered in the evening, many farmers use the method of flood irrigation, and the humidity in the shed rises after watering, when the humidity is greater than 75%, some melons and fruits are susceptible to diseases, such as gray mold, downy mildew, these diseases are related to excessive humidity. The temperature is the best at noon, and the curling leaves appear after watering, which affects the normal growth of vegetables. Therefore, it is more appropriate to water vegetables in the morning.

When growing vegetables in the open field, it is generally better to avoid the noon time period in summer and water them in the morning and evening. After watering at noon, the soil temperature decreases, which can cause damage to the root system. Moreover, frequent watering at noon makes the soil easy to compact, and vegetables can grow slowly.

Therefore, it is generally better to water in the morning and afternoon, and there is no big difference between watering in the morning and afternoon for the growth of vegetables.

Watering method

1. Bay watering is a traditional watering method, which has high requirements for the quality of land preparation. Aqueducts generally use underground buried cement pipes or above-ground canals, which can avoid water loss due to leakage on the way. There is a fixed gate in the plot that needs to be watered, and the amount of water can be used.

However, most of the furrow irrigation systems in northern China are still dominated by surface channels, which have low land utilization, large water consumption, high labor intensity, low efficacy, and are easy to cause soil compaction.

2. Spraying is to send the pressurized water formed by the water pump or natural drop to the field through the pressure pipeline, and then spray it into the air through the nozzle to form fine water droplets, and evenly fall on the vegetable field to achieve the purpose of watering. Generally speaking, its obvious advantages are uniform watering, less arable land, manpower saving, and strong adaptability to the terrain.

Spraying is easy to control the amount of irrigation according to the water demand of vegetables and plants, and the uniformity is high, which can save water 30 50 compared with traditional methods; It can keep the soil structure from compaction, avoid secondary salinization of vegetable soil, and save more than 10 cultivated land; The quality of land preparation is not required.

3. Micro-watering is becoming more and more common in facility cultivation. Including drip irrigation, micro sprinkler, infiltration irrigation and small tube outflow irrigation, etc., it is an irrigation method that uses low-pressure small water flow to send water to the roots of crops and infiltrate the soil. Micro-irrigation can provide water for plants continuously or intermittently, save a lot of water, the quality requirements for land preparation are not strict, the operation time can be combined with the use of top dressing, and the disassembly and installation of the device are convenient, but its investment is high.