What s the matter with the cabbage not growing, what s the matter with the cabbage growing under the

Reasons why cabbage does not grow:

1. The temperature is too high. All cabbage is suitable for the beginning of the autumn festival.

Later, the temperature drops to a suitable time before sowing is done. At present, there is no Liqiu Festival, the temperature is too high, up to more than 40, and the light intensity.

large, high soil moisture, water vapor.

Strongly, of course, after the cabbage seeds germinate, they will inevitably not be able to withstand this environment.

2. The humidity is too high.

Cabbage is sown in the open field, and the vegetable field has recently gone through a slow rainy season.

The soil moisture content is oversaturated, and the soil temperature of the vegetable field is more than 25 and as high as 30 under the strong sunlight exposure in the middle volt. In the moist vegetable soil, under the exposure of high temperature and scorching sun, the soil moisture vaporizes into water vapor, which escapes from the upper air and discharges, and the water vapor temperature gradually increases.

Precautions. After the cabbage sprouts, in this environment, the seedlings will grow into deformed, with very long stems and feet, cotyledons.

Yellowing, the heart lobe is very difficult to differentiate and grow. Rural sowing cabbage, the time is too early, the temperature is too high, the humidity is too high, the sun is strong, the young cabbage seedlings, can not suffer from this environment toss, must grow poorly, serious pests and diseases, blight and so on now occur.

In order to avoid the occurrence of this phenomenon, only strengthen shading, cooling, ventilation and other measures to improve the seedling rate of cabbage, otherwise it will be all in vain.

The roots are weak and the absorption capacity is poor, and they cannot absorb enough nutrients for the growth of aboveground stems and leaves, resulting in poor plant growth. Nitrogen, phosphorus and potassium (20, 20, 20) water-soluble fertilizer plus humic acid active liquid fertilizer or amino acid active liquid fertilizer plus biological bacterial fertilizer were applied to the roots. Foliar sprays of natural brassinin plus humic acid active liquid fertilizer plus potassium dihydrogen phosphate.

Every 7 to 10 days, 2 to 3 times in a row. In order to promote the roots to take root and strengthen the roots, promote the seedlings to grow seedlings and strengthen the seedlings.

Cabbage is a biennial plant that grows underneath the cabbage"Baby cabbage"A stem will grow and blossom knots.

In the planting management of cabbage, we often see the yellowing of cabbage leaves, generally for the following reasons:

First, the soil is arid and lacks water. We all know that the growth of plants must be dissolved and differentiated by water in order to be absorbed by the root system of the plant and transported by the ducts in the plant. If there is a lack of water, the nutrients in the soil cannot be well absorbed and utilized by the crops.

At this time, the cabbage leaves appear yellow due to the lack of fertilizer**. Therefore, in the dry and rainy weather, it is necessary to water in time to meet the needs of the normal growth of cabbage.

Second, lack of fertilizer. Based on my own planting experience, I found that the lack of nitrogen fertilizer can also cause the cabbage leaves to turn yellow. The amount of nitrogen fertilizer used, the amount of chlorophyll on plants.

The formation of a great influence. However, the amount of nitrogen fertilizer should not be blindly increased, otherwise, the finished cabbage planted will taste bitter, which will directly affect the taste of cabbage and affect economic benefits.

Therefore, in the process of cabbage cultivation, we advocate the use of nitrogen, phosphorus and potassium compound fertilizers, rather than only nitrogen fertilizers, such as urea.

If we determine the lack of nitrogen fertilizer, we can supplement it by spraying foliar fertilizer to meet the growth needs of cabbage.

Third, there is too much water in the field and it takes too long. To grow cabbage, it is best to grow it with ridges. This is not only conducive to the growth of cabbage roots, but also can play a role in preventing damage to cabbage roots due to excessive water accumulation.

If planted on flat ground, in case of rainy weather, coupled with poor drainage, at this time, the soil will have poor air permeability, affecting the growth and development of the root system, if it is a high temperature, the cabbage root system may rot, and the plant will gradually turn yellow and die.

Chinese cabbage grows rapidly, the growth cycle is short, it can be seeded or transplanted seedlings, and the high temperature and drought in summer and autumn can prevent root damage; The transplanting of seedlings in winter and spring can prevent cold seedlings and reduce the occurrence of immature sprouts.

1. Insist on ventilation and light transmission. In addition to paying attention to ventilation, it is necessary to insist that the cabbage seedlings have at least 3 hours of sunshine every day. Chinese cabbage is a long-day plant, and the light time in spring and winter is shorter, so we must ensure that the newly emerging cabbage has enough light; In summer and autumn, when temperatures are high, people may take shade measures to cool down the seedlings, but we should be careful to ensure that the temperature is controlled and that there is enough light.

If excessive shading is carried out during the vegetable seedling period, it will incur a lack of light, and due to the phototaxis of the crop itself, the seedlings of the cabbage will be more inclined to grow taller in order to absorb the sun, and this process will lead to the composition of tall seedlings.

2. Moderate control of fertilizer and water. For the small cabbage that only grows tall but does not grow leaves, at this time, in addition to controlling the application of nitrogen fertilizer (the generation of tall seedlings is the manifestation of seedling growth, and controlling nitrogen fertilizer in the soil during seedling raising is an effective way to prevent seedlings from growing), we can sprinkle grass ash on the furrow surface.

Or fine dry soil, absorb excess water, in the way of drought squatting seedlings, inhibit the growth of elongation, and promote the true leaves.

growth, which can improve the phenomenon of only growing tall and not growing leaves.

3. Moderate shading and cooling. The best time for bok choy is at the beginning of the autumn festival.

Later, the temperature drops to the right time before planting. When the cabbage is sown, the monthly average temperature is about 16, and the highest temperature is 23, which is the most suitable, the germination is normal, the seedlings are complete, and the seedlings grow strongly. Cabbage generally does not need to stop shading treatment, but the temperature is too high, exposure to the sun is not conducive to the growth of cabbage, like the temperature in some regions exceeds 35, if it is not a heat-resistant species of cabbage, or to do proper shading treatment, cabbage can grow well, and other seasons usually do not need shade.

Fourth, if the seedlings only grow tall, not leafy conditions, can also be properly sprayed dwarf and sturdy never stop conditioning, but pay attention to the control of concentration, if the real growth is too serious, or directly re-seedling is the best.

In short, as the saying goes, "white rice and green vegetables, a wonderful way to maintain health," "if you don't eat green vegetables for three days, you will make a fire", etc., it can be seen that small cabbage (green vegetables) has a high value as a vegetable or a health thing.

At this time, we must do a good job in the corresponding field management and the implementation of the family, you can choose to use farm fertilizer or compound fertilizer, and timely receive and send the surrounding soil to water on time, ensure sufficient sunlight, spray a certain concentration of pesticides, and avoid pests and diseases.

Strengthen the regulation of temperature and light, control water and nitrogen fertilizer, control humidity, and do not plant too intensively when planting.

The easiest way to do this is to reduce the amount of watering, which can alleviate the growth.

Excessive humidity: During the rainy season, there is a lot of water in the field, and the cabbage seedlings are unable to absorb all the water and the roots rot. The temperature is too high:

The sowing time was too early, and the temperature in the field continued to exceed 35 degrees Celsius. Pest nibbling: Snails eat the root system, and nutrients are difficult to deliver.

Nutrient insufficiency: In the case of insufficient base fertilizer, there is a lack of fertilizer supplementation in the later stage.

1. Excessive humidity

After cabbage is planted in the open field, it may cause a lot of water accumulation in the field due to the long rainy season, and the soil moisture content is in a saturated state, resulting in the germinated cabbage seedlings cannot absorb all the water, resulting in stagnant growth, at this time, you should immediately dig a ditch and drain it.

2. The temperature is too high

Cabbage is only suitable for sowing after the beginning of autumn, when the temperature drops to about 20 degrees, if the sowing time is too early, resulting in the temperature in the field continues to exceed 35 degrees Celsius, coupled with the light intensity, the water evaporation is vigorous, it is easy to cause the cabbage seedlings to appear dehydrated, so as not to continue to grow.

3. Pest gnawing

After the cabbage enters the seedling stage, there may be a large number of snails to eat its stems, leaves or roots, resulting in water and nutrients are difficult to continue to transport to the aboveground parts, and then make it stop growing.

4. Insufficient nutrients

The continuous growth of cabbage seedlings needs the supplement of nutrients, if the fertilizer is not applied for a long time, coupled with the lack of bottom fertilizer, it will stop growing, at this time, it is necessary to combine the seedlings to chase dilute manure water or 5% urea, provide nutrition for the development of seedlings, and ensure that the growth and leaf color of cabbage seedlings are normal.