When the greenhouse pepper reaches the seedling stage, how should the temperature be controlled?

The plant is stout and tall and bears many fruits, the size is large, the flesh is thick, the fruit shape is square, the peel is smooth, the color is gorgeous, the color is bright, the color is red, yellow, orange, purple, green and other colors, the taste is sweet and crisp, the nutritional value is high, the nutrition, color, and sweetness are integrated, the pepper plant grows strongly, and is more resistant to low temperatures, but in a year, often around the New Year's Day or the Spring Festival, the pepper can be sold very high, and now these annual vegetables are becoming more and more popular off-season cultivation, and the off-season cultivation of vegetables can not only meet the needs of people's lives, It can also improve the economic efficiency of growers.

At present, the <> bell pepper is mainly based on gift dishes, special dishes, Western food salads and hotel side dishes, so we must consider who to plant and sell to in the selection of varieties, and then we should choose varieties with large fruits, good quality, good yield, strong disease resistance, and suitable for solar greenhouse cultivation. Ideal for out-of-season shed cultivation. The length of sunshine is within 14 hours per day, the amount of flowering and fruiting needs to be determined according to the length of its sunshine, and the length of sunshine is about 13 hours.

The flesh is thick and smells like a melon and fruit, as a special vegetable, in the winter using the greenhouse to cultivate peppers, generally sowing seedlings in early July, planting in mid-August, harvesting can begin in late September, October is to the peak of harvesting, and even the situation of growing and falling flowers and fruits. Secondly, in winter, the pepper must be moderately ventilated under the condition of ensuring that the humidity is not lower than 70%, and the ventilation cannot be refused because of the fear that the temperature in the shed is too low, otherwise it is easy to affect the pollination of the pepper or lead to the occurrence of pests and diseases.

It is important to choose the right varieties before raising seedlings, because not all varieties are suitable for growing in greenhouses. Seedlings require professional seedbeds and related professional skills, which is difficult for novices, and if you are not sure, you can also buy seedlings directly. The suitable temperature of bell pepper seeds is 20 30, when it is lower than 15 or higher than 35, it can not germinate, the plant temperature is 25 28, the temperature of flowering and fruit setting is 25-30 during the day, the suitable temperature at night is 15-20, the temperature is lower than 10 or higher than 35, and it is easy to drop flowers and fruits.

The temperature of bell pepper should be maintained at 23 28 during the day, and the temperature at night should be maintained at 16 18, the minimum is 15, the ground temperature is 20 22, and the relative humidity of the air is 70% 80. When the temperature exceeds 28 during the day and 18 at night, it should be ventilated. If the air is too dry, you can put open water in the furrow to increase the humidity.

The night temperature should be maintained at a high level in the early stage of flowering and fruit setting, and the night temperature can be reduced to 12 15 during the fruit expansion period. The weather changes greatly in October, and the production should be ventilated and covered with thermal insulation quilts in a timely manner according to the changes in the weather.

The temperature is controlled to 25 to 35 degrees during the day and 14 to 18 degrees at night, which is very suitable for seedlings.

Be sure to keep them above 25 degrees. It should also be kept above 14 degrees at night, so that the seedlings will grow better.

After the first true leaf appeared in the true leaf stage, the seedbed was kept at 25 30 during the day and 14 18 at night, focusing on preventing the high temperature of the hotbed at night from causing growth and not conducive to cultivating strong seedlings and flower bud differentiation.

Colored pepper is a thermophilic high temperature, not cold-tolerant vegetables, the growth process must have suitable environmental conditions, pepper is a shallow root crop, not easy to regenerate adventitious roots, the flower buds of the early and middle fruiting are differentiated in the seedling stage, therefore, the cultivation of age-appropriate strong seedlings plays a great role in improving the economic yield of pepper in the early and middle stages. According to the greenhouse area and the number of pepper varieties to determine how much the seedbed is furrowed, the width is 1 meter, and the treated nutrients are evenly sprinkled into the furrow surface, and a variety is a furrow. Seed treatment.

Choose seeds that are plump and full, bright in color, and free of diseases and insects to dry. Using the sowing method, every 10 square meters of seedbed evenly sowing about 200 grams, after sowing is to answer the answer with moisture to cover 1 cm of left cherry tree right, after sowing cover mulch film to protect moisture and temperature. The seedling period is in the high temperature and rainy period, and the seedbed prevents the south from burning and burning the seedlings, and prevents the seedlings from being photographed by heavy rain.

First prepare a seedbed with fertile soil, soak the pepper seeds in warm water for a few hours, then put it in a clean pot, cover it with a black cloth to promote germination, and wait for its seeds to grow small buds with ear bark to hide in the dust, and then plant it in the seedbed for seedling.

Select the fertile garden soil without diseases and insects and the fully decomposed high-quality farmhouse fertilizer (mushroom sticks are better) to prepare the nutrient soil, mix it according to the ratio of 3 1 or 2 1 after smashing and sieve, and add 15 30kg m3 of diammonium phosphate and 75kg m3 of potassium sulfate plant ash to the nutrient soil and mix evenly. Spray disinfection with 400 500 times of 50% carbendazim wettable beam powder, seal the rubber liquid with film after disinfection, and seal it for about 1 week for later use. Generally, the seedbed is made of a flat furrow that is wide and 10cm above the ground, the length depends on the amount, and the bottom water is poured 3 5 days before sowing and waiting for sowing.

Greenhouse let Heng pepper should choose strong disease resistance, thin skin and thick flesh after sowing timely mulching, to improve the soil temperature, pepper is more drought tolerant but not waterlogging, to get Changchong high yield, must strengthen water management, and finally prohibit the wind at noon high temperature, in order to prevent pepper wilting. Tan Xun does.

First of all, you don't let it be exposed to a lot of sunlight, don't shoot it to dry up, give it more water, fill it with more water, fertilize it, and also spray it with some insecticidal pesticides. This way your peppers will be very productive.

Temperature climate, peppers are not tolerant to drought or waterlogging, and greenhouse temperature is also required to prevent prolonged wilting and flowering and fruiting.

Seedlings are at low temperatures, and seedbed management should be based on heat preservation. The temperature at seedling stage is 25-30 during the day and 15-18 at night, and the temperature difference between day and night is 6-10. The straw curtain should be opened late and covered early, reduce ventilation, strengthen heat preservation, and cover the straw curtain in case of cold wave.

And the seedling stage needs less water, so we should pay attention to water control.

Seedlings are raised when peppers are grown in a greenhouse. This stage is characterized by weak photosynthetic capacity of seedlings, and hypocotyls are prone to overgrowth, forming "tall seedlings". In addition, seedling diseases are prone to occur at this stage.

Therefore, the focus of management is to create an environmental condition with sufficient light, suitable ground temperature, slightly lower temperature and low humidity.

The temperature should be controlled, the seedlings should be planted reasonably, the seedlings like cloudy days, pay attention to the sun, water frequently, but control the measurement.

The temperature should be maintained, and it should also be planted in greenhouses, and the soil should be loosened in time, and it should also be covered with some membrane cloth.

Proper fertilizer and water management.

At the time of planting, water enough planting water and slow seedling water, and then the amount of watering should be properly controlled to promote fruit set. After the first layer of fruit set and grow to 3 cm in size, water, and apply fruit promotion fertilizer with water, apply urea 15 or ammonium sulfate 20 per mu, and irrigate into the dark ditch under the film with water.

After entering the full fruiting period, the vegetative growth and reproductive growth of peppers are carried out at the same time, and the demand for fertilizer and water reaches a peak. After sitting on the pepper, carry out the second top dressing with water, and apply urea 20 and potassium sulfate 10 per mu. From December to mid-to-late February of the following year, it is a period of low temperature and low sunshine, and if it is not particularly dry, it is necessary to water less and maintain a rhythm of watering once every 15 days.

After the beginning of spring, the temperature and light conditions gradually improve, generally maintain watering once a week, top dressing once every half month, apply urea 15 per mu each time, and can also be sprayed with potassium dihydrogen phosphate solution and urea solution every week, which has a good help to achieve high yield.

The suitable temperature for the seedling stage is: the daytime temperature is 20 28, and the night temperature is about 12. When the daytime temperature is lower than 20, the night temperature is lower than 10, try to increase the temperature, when the temperature is low for a long time, the pepper seedlings grow slowly, the seedlings are slow, especially the root expansion speed is slow, which is not conducive to cultivating strong seedlings, if the temperature of the seedbed is low for a long time, it is easy to cause deformed seedlings, and it is also easy to cause cataplexy at the seedling stage.

At this stage, if the temperature of the seedbed is high, especially at night, it is easy to cause the seedling stem to grow too fast and form a "tall seedling".

In terms of specific management of temperature, generally when most of the seeds in the seedbed emerge, the seedbed should be ventilated and cooled to reduce the temperature during germination3 5. Seedlings should be protected from high temperature during the high temperature period, and shading and cooling methods can be used to reduce the temperature. When the temperature is low, the temperature of the seedbed should be strengthened (such as ignition brazier, power-on**, etc.) or thermal insulation measures (mainly for multi-layer thermal insulation coverage).