In the emergence period of cabbage, what kind of management can make cabbage seedlings stronger?

We should manage according to the situation, and when the temperature is too high, we should cover the shade net in time to cool down and moisturize, so as to promote the normal growth of seedlings. After 2-3 leaves and time seedlings, to prevent crowding and disease, 7-8 leaves when the seedlings are fixed, the plant spacing is generally about 40 cm. When thinning seedlings, eliminate small seedlings, inferior seedlings, etc., and pull out weeds at the same time as seedlings.

Seedling setting. In order to get the best quality Chinese cabbage in the end, it is necessary to leave enough space for the cabbage to grow, which requires the so-called seedling manipulation. When the Chinese cabbage grows two heart leaves, the distance between the two cabbages is generally about three or four centimeters.

When the cabbage has four or five cotyledons, pull out some dense seedlings to leave strong seedlings. Water frequently. Although the water requirement at the seedling stage is not large, it is necessary to be diligent in watering according to the situation, keep the soil moist, and also reduce the adverse effects of high temperature.

Replenish the seedlings. After the sowing of Chinese cabbage, there will be a lack of seedlings and no seedlings, which may be caused by many reasons. You can analyze the specific reasons, and then replant or replant according to the situation. Generally, it is mainly to replenish seedlings, because time waits for no one.

To carry out water and fertilizer management, it is necessary to ensure the moisture of the soil at this time, if the water is not enough, it will seriously affect the growth of cabbage, and it may also lead to stunted growth of cabbage.

It is necessary to pay attention to watering, weeding, soil drainage, and fertilization on time, so that plants can grow better.

The method of raising seedlings first and then transplanting is adopted. The place where the seedlings are raised should be relatively high to facilitate the discharge of water. Using the method of sowing seeds to raise seedlings can easily lead to poor seedlings and waste of seeds. Therefore, you can first use nutrient soil to water the salted fish jade and then transplant it.

It is necessary to pay attention to the control technology, but also to the control system, but also to pay attention to the way of control, but also to pay attention to the control of diseases, but also to pay attention to the control of fruits.

Watering after sowing, and watering in time according to weather conditions after planting to prevent high temperature and drought from affecting the growth of seedlings, and ploughing in time after watering or rain; Lotus period management. Apply 10 kg of urea per mu, water or rinse with water in time after fertilization, and then master the principle of seeing dry and wet; Closing management. Apply 15 kg of urea per mu, water or fertilize every 5-6 days, so that the soil is always moist and the water supply is even.

Stop watering 8 days before harvest to avoid too much water on the balls and causing rot.

Starting from the seedlings, according to the soil fertility and growth, 10 kg of thin farmhouse fertilizer or ammonium sulfate should be applied per mu, the seedlings should be raised, and the top dressing should be done once after watering. When applying fast-acting fertilizer, it is necessary to pay attention to the distance with the Chinese cabbage not too close, nor can it be spread on the leaves, so as not to burn the seedlings and burn the leaves. After transplanting, urea and potassium dihydrogen phosphate were sprayed to improve the resistance and quality of Chinese cabbage.

Seedling growth fertilizer is more important. If the fertility in the early stage is insufficient, it will affect the growth and development of Chinese cabbage in the later stage.

In fact, these things are important for the management of Chinese cabbage seedlings and may affect the yield in the later stage: although Chinese cabbage is easy to emerge, seedling management is important even before it expires. If the early management is not done properly, it will affect the yield and quality in the later stage.

Therefore, after the Chinese cabbage seeds are sown, the field should be kept moist, and the Chinese cabbage should be watered in drought until the Chinese cabbage seedlings emerge, in order to ensure the consistency of yield and management, the seedlings should be replanted or replanted as soon as possible to ensure that the Chinese cabbage in the field grows 1 to 5 to 6 true leaves.

Generally, flat planting, two rows of Chinese cabbage are planted in a row, the row spacing is about 70 cm, the plant spacing is about 60 cm, and the Chinese cabbage is harvested to be dried before it can be stored. When the outermost leaves of Chinese cabbage are a little hazy, you can stock them up, which is easier to preserve. It is better to choose a plot that has not been planted with cabbage before.

Before sowing, apply rotting farmhouse fertilizer and Bika fungus agent as base fertilizer in the vegetable field, and then plough and rake the level, and after planting Chinese cabbage, it is necessary to replenish the water required for the growth of Chinese cabbage in time. Although it has passed the summer solar term, it is still very hot at noon, and the heat resistance of Chinese cabbage is very poor.

Generally, the spacing between Chinese cabbage plants is between 25-30 cm, and ridge planting is carried out, which is conducive to field ventilation, and can discharge the stagnant water in time after rain, and the disease must be sprayed with fungicides and insecticides in time, so that it can have a high yield.

I think that the seedling stage should be covered with film and insulated, and at the same time, it should be watered enough before the peritoneum, so that the survival rate is high.

Keep the field moist and use dry water to create moisture until the cabbage seedlings and the soil remains moist. When 2 true leaves grow. After thinning at the first time, aphids can be controlled in advance according to the situation, and sprays such as imidacloprid and avermectin can be used to prevent and control them.

Starting from thinning, according to soil fertility and growth, top dressing thin farmhouse fertilizer, or ammonium sulfate 10 kg per mu, raising seedlings and hair, and topdressing once after watering. When applying fast-acting fertilizer, it is necessary to pay attention to the distance from the Chinese cabbage should not be too close, let alone spread on the leaves, so as not to burn the seedlings and burn the leaves. After transplanting, urea and potassium dihydrogen phosphate were sprayed to improve the resistance and quality of Chinese cabbage.

Growth fertilizer at seedling stage is more important, if the fertility in the early stage is insufficient, it will affect the growth and development of Chinese cabbage in the later stage.

After cutting to 5 6 true leaves during the seedling period, it is necessary to inhibit the growth of the seedling stage, promote the growth of Chinese cabbage roots, improve the ability of Chinese cabbage roots to absorb nutrients, and ensure sufficient nutrients for Chinese cabbage in the later stage**, but it is worth noting that the row inhibits the growth of seedlings must avoid rainy days, choose morning dew after 10 pm on a sunny day, remember before that! Fertilizer and water management Chinese cabbage seedling period fertilizer water is not large, if enough basal fertilizer is generally not added, after cutting during the Chinese cabbage seedlings, such as drought and little rain, water difference, should be watered once seedling water, to a small area of flooded irrigation to soak water to see dry and wet as the standard, should not be flooded irrigation.

In general, if there is enough basal fertilizer in the field, there is no need to apply fertilizer before the cabbage balls. If the field is not good, top dressing should be carried out on 7-8 leaves. The weather was hot and dry in the early days.

During the granulation stage, the demand for potassium increases, so it is not only necessary to apply enough nitrogen fertilizer, but also to increase potassium fertilizer. Urea and compound fertilizer can be mixed and watered after top dressing, which can meet the characteristics of large water demand during the granulation period of Chinese cabbage and promote the rapid absorption and utilization of nutrients. At the nodulation stage, sufficient water can also prevent the occurrence of dry heartburn in cabbage, but the field should not be watered, and try not to irrigate with large water to prevent the occurrence of diseases.

There is a shortage of water at the depth of sowing, so it is necessary to replenish water in time, and you can use SPR watering during this time.

Chinese cabbage seedling management these things are very important, may affect the later yield: although Chinese cabbage is easy to emerge, but even before the expiration of the seedling management is very critical, if the early management is improper, it will affect the yield and quality of the later stage, so after the Chinese cabbage seeds are sown, it is necessary to keep the field moist, and water when it is dry, until the Chinese cabbage seedlings are in order to ensure yield and management consistency, seedlings should be replenished or replanted as soon as possible to ensure that the field cabbage grows 1 to 5 to six true leaves. The second time, the seedlings are left to be superior and inferior.

To do a good job in seedling raising, to ensure soil fertility, to water and fertilize regularly, to prune branches and leaves in time, to pay attention to the temperature and humidity of planting, to grasp the density and time, to choose a relatively high survival rate of planting, to ensure light time and ventilation time.

Dried heartburn of Chinese cabbage is the main disease at rosette stage and heading stage. Dry heartburn is a biological disease that is usually caused by harsh natural conditions or improper management. Pay attention to these field management, you can also grow high-quality Chinese cabbage dried Chinese cabbage and heartburn, the "disease" is like this:

The margins of the new heart lobes are yellowish and thin, dry and thin; When the pericardium develops, it looks normal on the outside, but when it is peeled off, it is shriveled and sallow, like fire. In addition, it is accompanied by "symptoms" such as stunted root development and underdeveloped lateral roots. Dried heartburn in field Chinese cabbage is mostly caused by calcium deficiency, and prevention should be the main way to prevent calcium deficiency and dry heartburn.

First of all, calcium supplementation in the heart leaf is the most direct way to prevent heartburn in dried Chinese cabbage, and liquid calcium can be sprayed in the rosette phase or endocardial phase. The control effect of liquid calcium preparations is much better than that of solid calcium preparations. Second, reasonable fertilization For some growers, they are too eager to pursue efficiency, too biased in fertilization of nitrogen and potassium fertilizers, too long leaves at the rosette stage, and excessive nitrogen in the soil affects the absorption of calcium by early planting animals.

Calcium deficiency also has symptoms in other vegetables, such as umbilical rot in tomatoes and peppers. Thirdly, too dry Chinese cabbage needs water and fertilizer. If the field is too dry, it will affect the uptake of water-soluble calcium by the roots.

Especially after a long period of drought and little rain, over time, the cabbage will naturally dry up and break the intestines. In addition, drought can also bring about boron deficiency, which causes Chinese cabbage to crack and rot. Cultivating and weeding.

Tillage and weeding seem to be an integral part of growing all crops. When the seedlings are thinned for the first time, they can be weeded together, and there is a lot of rain in the early stage, mainly to pull out weed buds; Proper tillage, soil loosening and weeding should be carried out in the later stages of planting or when rainfall is reduced. The cultivation should be even, and the cabbage roots should not be damaged.

Do not create uneven pits in the field to prevent water accumulation. In ridge fields, attention should also be paid to ridge forming and ditching when cultivating. Planting cabbage, the seedlings have not been planted, and these important management must be done well.

Eliminating diseases and insect pests at the seedling stage of Chinese cabbage requires the control of viral diseases, downy mildew, aphids, cabbage worms and underground pests. Mainly for the selection of resistant varieties for viral diseases, to avoid excessive drought in the field, the first thinning to control aphids and underground pests with drugs. Please refer to the above drugs for the use of the patient.

Scientific selection and seedling breeding, selection of sterile seeds and seedbeds, maintaining a reasonable planting density, enhancing field permeability and light, avoiding excessive accumulation of water and excessive humidity, can reduce the occurrence of some fungal diseases.

We should be prepared to prevent pests and diseases, and we should also water it frequently and we should get rid of weeds frequently.

Usually to water, every three days to add fertilizer, timely observation of whether there are pests and diseases, once found immediately pull out, otherwise it will be infected.

Chinese cabbage needs to be watered once a week, in addition to removing insects and fertilizing to grow better.

Generally speaking, the seedling period is about 60 to 80 days, and there are four main things that need to be paid attention to when raising seedlings during this period. As long as some precautions are taken care of during the seedling period, then the cabbage can grow better and lay a good foundation for future movement. <>

The first aspect is to pay attention to the management of weeding. The seedling period is relatively long, so there are some weeds that are relatively easy to grow, and we must pay attention to the management of weeding in this seedling period. If there are weeds that grow, they should be cleaned up in time, and if these weeds are not cleaned, they will absorb the nutrients in the soil, resulting in insufficient nutrients for cabbage.

Weeds generally grow relatively quickly, and if left untreated, it will affect the photosynthesis of cabbage. <>

The second aspect is to pay attention to the management of fertilization. Fertilization management in the seedling stage is generally based on water-soluble fertilizer, water-soluble fertilizer is generally easier to absorb, and it is particularly convenient to use, mixed with water and sprayed directly.

The third aspect is to pay attention to the issue of temperature. When planting cabbage, especially when raising seedlings, be sure to maintain this temperature, not lower than 15 degrees, not higher than 35 degrees. For example, when the temperature is too high, we can put a layer of straw on top of this seed to moisturize and avoid the temperature rising and affecting the growth of cabbage.

The fourth aspect needs to pay attention to insect control. Mu Ming codeSome seeds will be used as food by some insects, especially some birds, so we must pay attention to the management of insect and bird prevention in the nursery. Only by doing a good job in the management of insect and bird prevention can it be possible to let the cabbage grow young shoots and get good growth.

When choosing to sow seeds, you can mix some insecticides and insecticides to stir and plant, which can play a good role in preventing insects. You can also make a scarecrow, or a dummy, in the planted plot, which can also play a good role in expelling birds.

Chinese cabbage has high soil requirements. At the same time as pulling seedlings and clearing the garden for the previous crops, if waterlogging and severe diseases occur at the end of the harvest, the soil should be disinfected with lime and fungal agents. If the secondary salinization of the soil in the shed is serious, flood irrigation salt should be used.

Before irrigation, a soil fence should be built around the shed so that it is higher than the soil surface so that the soil surface is not flooded when irrigating. In order to reduce diseases and deficiencies of certain elements in the soil, avoid continuous cropping in the cruciferous family, and combine with summer, Chinese cabbage has a short growth period, organic fertilizer should be reapplied. Chinese cabbage grows vigorously in the summer, needs a lot of water and fertilizer, but is not waterlogged.

In production, the cultivation method of heavy application of base fertilizer and semi-high ridge planting should be adopted to water and moisten the ridge surface and drain water after rain.

Water is a necessary substance for the growth of Chinese cabbage, and before sowing, it is necessary to ensure that there is enough water in the soil, which is conducive to the germination and emergence of seeds. If the soil is moist, the seeds of the bok choy can break through the soil for about 3-4 days. If you encounter a high temperature and drought environment, you must water it in time to increase the soil moisture content.

Improve water absorption and promote the growth of cabbage, but the water should not be too much, otherwise it is easy to cause waterlogging, affecting the growth, and drainage should be done in rainy days. Chinese cabbage is a vegetable that likes to fertilize. It requires more nutrients during cultivation and growth.

According to the growth stage of Chinese cabbage and the fertilizer content of the soil, timely topdressing is very necessary. Prevent nutrient deficiencies and malnutrition in bok choy, leading to a decrease in survival rate and yield. Fertilization can be carried out appropriately together with watering, and fertilization can be sprayed to ensure comprehensive and uniform fertilization without affecting the quality of cabbage.

Chinese cabbage has a strong growth capacity and high yield, so nutrient absorption is very important. Soil environment is the key to nutrient uptake in Chinese cabbage. Proper tillage and loosening can improve soil permeability, increase soil uptake of fertilizers, and promote nutrient uptake by roots.

It is very beneficial to the growth of Chinese cabbage, and can also reduce the occurrence of pests and diseases, and improve the yield of Chinese cabbage. It is necessary to strengthen field management, do a good job of water and fertilizer, and disinfect regularly. The disinfection should be comprehensive and uniform, and the concentration of disinfectant should not be too high to prevent the disinfectant from inhibiting the growth of cabbage.

After the onset of the disease, prescribe the right medicine according to the specific situation, and do not blindly use the medicine, otherwise it is easy to cause drug damage.