How to fertilize cucumbers in greenhouses in winter to achieve high yields?

Try to avoid watering, generally only 1 2 times of watering, depending on the soil conditions. Sandy soil can be watered once along the small ditch 3-5 days after the seedlings are slowed, and the clay soil resources are slow because of the water dispersion, and the seedlings generally do not need to be watered immediately after the seedlings are slowed. When the root melon sits down, according to the soil moisture before picking the melon, the watering is combined to chase 1 fertilizer.

Watering should be carried out on sunny days for about 3 consecutive days, and the agricultural mulch film should be pulled to the top of the ridge before watering, and the lower ridge on both sides of the row should be ditched and fertilized.

1 15 acres of greenhouses must be 80kg of soybeans with alcohol, 15kg of urea solution and sufficient stirring of the soil, then watering, fill the soil and fill the ditch after water infiltration, after the whole shed is fertilized, immediately watering along the row, the amount of watering to the top of the ridge is appropriate, the day of watering is not ventilated, and the greenhouse is smoked with 45% mancozeb aerosol agent at night to prevent downy mildew.

Management in the cold winter period: the early production should be increased as much as possible under the condition of keeping warm and seedlings.

Temperature management: maintain 18-20 in low light during the day, 22-24 in medium light conditions, 26-30 in strong light, 10-18 in night, and the minimum is not less than 8.

Water and fertilizer management: The main stem requires less water at this stage, and only 2 times of watering and fertilization can be carried out before the Spring Festival. In the first half of January, diammonium phosphate can be applied once with water, 450kg per mu; The second time before the Spring Festival, part of the organic fertilizer is applied with water, and the watering and fertilization in this period is generally only carried out in small rows and rows.

Carbon dioxide fertilization: After sunrise, the carbon dioxide concentration value of the arch drops sharply, which does not meet the requirements of photosynthesis of loofah plants, and carbon dioxide fertilization needs to be implemented in production. The use of hydrochloric acid plus potassium nitrate to fill the arch of carbon dioxide is not enough, the general situation is 9 o'clock in the morning and 10 o'clock in the morning is appropriate, the actual arch shed to do 18 began to put potassium nitrate.

Pick immediately, the temperature is low at this stage, the sun is weak, and it is advisable to pick young melons.

5. Management methods from the middle and late stages of cold winter to the period of pulling seedlings: closely focus on the core of "promoting seedlings, attacking melons, and preventing diseases".

Temperature: Maintain 30-32 before 14 o'clock at noon during the day, reduce the temperature after 14 o'clock, drop to around 20QC at 18 o'clock, and maintain it at 13 15 before sunrise the next day.

Ambient humidity: This period is controlled at 75% 80% during the day, 85% 90% at night, generally in the morning after the opening can be carried out in the short term ventilation and humidity, and then closed the shed to heat up, in the morning carbon dioxide period is not natural ventilation, to about 12 noon ventilation, deheating, moisture dissipation.

Water and fertilizer management: from mid to late February to mid to late March, generally 7 10 days to water once, from the beginning of April to the beginning of 4-6 days to water the seedling pulling period. Promote watering 1 time, chasing 1 fertilizer, generally every 2-3 times of inorganic organic fertilizer after topdressing 1 time of organic fertilizer.

The amount of organic fertilizer used is 667 square meters, 10 20kg of urea solution or 10-20kg of diammonium phosphate, and 10 15kg of ammonium sulfate is applied at a distance. In the middle and late stages of the cold winter, the demand for carbon dioxide increases greatly, and it is necessary to do a good job of carbon dioxide fertilization again until 10 to 15 days before the seedlings are pulled.

It is necessary to choose high-quality varieties, timely watering and fertilization, strengthen water and fertilizer management, ensure sufficient light, and control the temperature, the temperature needs to be controlled at about 20, timely loosening the soil, ensuring the permeability of the soil, and doing a good job of drainage and ventilation.

Be sure to water more and fertilize more, and secondly, you should pay more attention to the temperature, so that you can better solve the yield, and also be able to increase the yield, you should ensure that the sun is exposed, and pollination should also be carried out during the flowering period.

It is probably necessary to fertilize the cucumber when the seedlings have just grown, and then it is necessary to spray more water fertilizer and compound fertilizer. In this way, the cucumber yield can be increased.

Cucumbers in greenhouses need to be fertilized every day, and the fertilizer used every day is not as terrible as people imagine, generally used for insect control, and part of it is used as nutrients to ensure that cucumbers rise rapidly, as well as beautiful appearance, so that cucumbers can be sold at a good price, so cucumbers must be applied in the planting process, and the bottom fertilizer is combined with ground application and ditching concentrated application, and then a small amount of top dressing, generally in the first melon picking to start fertilization, and then according to the growth of cucumbers every 10 days or so.

Cucumber is a shallow-rooted plant with weak root regeneration ability and poor absorption of fertilizer and water. However, cucumbers like fertilizer but are not tolerant to fertilizer, excessive fertilization, especially excessive chemical fertilizer, and root burning when the water is insufficient. When cucumbers lack fertilizer, they will form melons or curved melons.

Cucumber fertilization in solar greenhouses is divided into pre-growth fertilization and post-growth fertilization. Pre-growth fertilization refers to the application of basal fertilizer before cucumber planting. In my experience, the base fertilizer should be based on fully fermented and rotted farmhouse fertilizer.

It must be rotted or the roots will be burned!

Greenhouse cucumber planting technical measures for land preparation, base fertilizer in the first half of the planting into the application, to ensure that all kinds of elements are reasonably matched, watering the bottom of the water planning for furrowing, cloth good plant row spacing, reasonable and timely planting. After planting, according to the temperature change and the growth and picking situation, reasonable control of water and fertilizer, at present, many farmers in the crop planting on the nitrogen fertilizer to apply more, nitrogen fertilizer is the main fertilizer in the production of cucumber, reasonable application of nitrogen fertilizer can improve the yield of cucumber. However, there is a limit to the amount of nitrogen fertilizer that can be applied to cucumbers.

In early spring, cucumbers in the shed grow fast, and the amount of fertilizer is larger, generally top dressing once every 2 harvests, such as ternary compound fertilizer, each time the amount is about 20 catties. It can be applied in the form of hole application or water belt fertilizer, and a large number of element water-soluble fertilizer can also be flushed. Nutrient soil preparation:

Cucumber fertilization should first pay attention to the preparation of seedling soil. Generally, it can be mixed with 50% vegetable garden soil, 30% grass ash, and 20% decomposed dry pig manure. Cucumber seedling nutrient soil needs to be treated to eliminate pests and diseases

Answer]: Before cucumber planting, apply 2000 kg of high-quality organic fertilizer and 30 kg of phosphate fertilizer per mu as base fertilizer. Cucumbers should be properly squatted in the seedling to early flowering stage.

Cucumber enters the melon setting stage, the root melon begins to carry out the first top dressing, 10 kg of urea per mu, 15 kg of phosphorus and potassium fertilizer, and then every 7-10 days combined with watering and top dressing.

A total of 8-10 times of top dressing are required during the whole cucumber growth period. During the growth period of top melon, the plant is senescent, and the ability of the root to absorb the bond branches is weakened, so it should be sprayed with urea solution, or foliar fertilizer such as potassium dihydrogen phosphate. With the increase of indoor carbon dioxide concentration, the yield of cucumber increased significantly.

The proportion of organic fertilizer should be appropriately increased, which can not only increase carbon dioxide in jujube, but also help to avoid the obstacle of salt absorption.

Pay attention to ventilation during the day to reduce air humidity and prevent the occurrence of diseases; Control the temperature according to the needs of the plant. Entering the melon setting stage, the fertilizer and water should be sufficient, and the fertilization should be based on the fast-acting flush fertilizer, and the amount of potassium fertilizer should be emphasized. Spray both sides of the furrow in a timely manner to make a wide furrow, and cover the furrow with film.

Each furrow is planted in a single row, and the seedlings are planted at a distance of 17cm according to the plant spacing, and 3900 seedlings are preserved per mu.

<> or furrow planting in double rows, row spacing 45cm, plant spacing 30cm, about 3 500 seedlings per mu. The empty furrow is interplanted with cold-tolerant lettuce or eggplant guatiling, which can make the guati thicken the grass shed and warm the ground. After the soil in the shed is thawed, deep ploughing, land preparation, and basal fertilizer are applied.

Combined with land preparation per mu (1 mu = 667 square meters) apply 5 000kg of high-quality farm fertilizer, 2 3 sprinkle before ploughing, so that the soil and fertilizer are fully mixed, 1 3 do furrow after furrow application, and increase the application of ternary compound fertilizer 25 clearing, and then plough and dry. Before planting, apply 7000-8000 kg of bottom fertilizer per mu, and deep plough and rake before land preparation to fully mix fertilizer with soil. Cucumber cultivation in solar greenhouse should increase ventilation and light transmission between rows to enhance photosynthesis.

Adopt the north-south direction, the size of the row of ridges for mulch film to cover the soil over again, and then we have to bury them according to different seasons, some climatic conditions, the actual situation of the soil to carry out additional fertilization, especially in spring and summer, we must apply enough organic fertilizer and farmer compound fertilizer, nitrogen and phosphorus ternary fertilizer and urea and other fertilizers combined with the market, in order to fertilizer, the organic fertilizer is put into the soil evenly, and then the soil is broken with a hoe, made into a ridge, and the ditch is arranged to prevent water and the dryness and humidity of the soil. Ensure that the plants adapt to the temperature, and after they are ready, they can buckle the shed for about a month to increase the ground temperature. If there is a previous stubble, the stubble should be cleared 7-10 days in advance, and disinfection and sterilization should be carried out in the greenhouse. 5 days before planting, 2500-5000 kg of humus organic fertilizer, 20 kg of potassium phosphate and 30 kg of diammonium phosphate were applied per mu of land preparation for base fertilizer planting.

To master the thinking technology, we should pay attention to the whole thinking skills, we must master it well, and the amount of fertilization must be mastered well in order to achieve good results, and we must also master the corresponding skills of this fertilization, such as how to fertilize and how to blast sand

1. Increase the application of organic fertilizer.

Organic fertilizer not only provides various nutrients for the growth and development of cucumber, but also can reduce soil bulk density, increase soil porosity, and improve soil physical and chemical properties. Therefore, organic fertilizer plays a major role in the continuous high yield of cucumber, activation and soil improvement. In production, 2500 3000 kg of rotted manure or 5000 kg of soil manure should be applied per mu.

2. Rational application of chemical fertilizers.

Cucumber has a shallow root system and is relatively weak, and too high fertilizer concentration will cause root burning. Cucumber fertilizer should be applied with less and more meals, and 25 30 kg of diammonium and 23 27 kg of potassium sulfate should be applied to the bottom fertilizer. Cucumber needs to be topdressed at any time during the growth process, and its total amount is 47 53 kg of urea and 52 58 kg of potassium sulfate per mu.

The topdressing time is generally controlled in the early stage, and nitrogen fertilizer and potassium fertilizer are chased once every 7 to 10 days in combination with irrigation and picking in the later stage of growth (or fertilization with the same nutrient content).

Top dressing during the growing season. Generally, cucumber planting needs to be topdressed 8 10 times, after setting melon, the yield of cucumber is basically formed, fertilization will not only cause melon vines to grow, but also promote the increase of yield. The cucumber was topdressed for the first time in the early stage of melon setting, and 7 9 kg of urea (12 15 kg of ammonium sulfate) were applied per mu, and 5 8 kg of potassium sulfate was applied.

After every 5 10 days, depending on the situation, watering should be watered with fertilizer every other time, each time per mu can be watered with water full garden spring biological flush fertilization 10 kg. It is necessary to ensure continuous high yield of cucumbers.

What should be paid attention to when spraying cucumbers with foliar fertilizer? Auxiliary effect: do not use foliar fertilizer in the past is a long-term, alternative to other fertilizers, which is not possessed by foliar fertilizer, foliar fertilizer is only used as an auxiliary fertilizer, and can not replace other root fertilizers, we use foliar fertilizer at the same time, but also need to give cucumber regular top dressing, use some other essential fertilizers, in order to ensure the normal growth of cucumbers, foliar fertilizer is an auxiliary fertilizer.

The concentration of spraying should be mastered: although the effect of foliar fertilizer is good, the effect is more, but it is not the more concentrated the effect is better, the concentration is too high, it is easy to cause fertilizer damage, especially some trace elements of foliar fertilizer, it is necessary to strictly control the spraying concentration of fertilizer, the concentration is too low is not the desired effect, the concentration is too high, it will be easy to cause fertilizer damage, so we must master the concentration of fertilizer when spraying foliar fertilizer on cucumbers in winter greenhouses, which is very important. Time of spraying:

As a spray top dressing, it is natural that the fertilizer liquid on the leaves carefully search for the longer the sedan chair stays as long as possible, so that the leaves can absorb more nutrients and play their due role, the winter greenhouse cucumber spraying foliar fertilizer, generally can be in sunny weather, 10 o'clock in the morning to close the filial piety before the operation is more appropriate, this time period, transpiration is small, foliar fertilizer is less volatile, very conducive to the absorption of plants, the effect of fertilization. Fertilizer use should be appropriate: when spraying foliar fertilizer, two or more foliar fertilizers should be used for spraying, so that the effect will be significant, for the growth of cucumbers in winter greenhouses have fundamental benefits, but also can save spraying time, spraying foliar fertilizer to achieve fine droplets, spraying evenly, like cucumber foliar back should be sprayed in place, so as to play the role of foliar fertilizer.

Cucumbers are nutritious and water-rich, and have become a fruit and vegetable suitable for all ages. The amount of nutrients absorbed by cucumbers varies with different growth periods. Before the fruiting period, the organs gain weight slowly, and nutrients flow mainly to the roots and leaves.

At the same time, it also provides a basis for the differentiation and development of grapes and flower buds. Greenhouse cucumber root system shallow, poor absorption capacity, like moisture but not drought, very sensitive to fertilizer concentration, must take light application, frequent application method, mainly nitrogen fertilizer.

Cucumbers have different requirements for nitrogen, phosphorus and potassium at different growth stages. Before cucumber fruit setting, the nutrients absorbed by plants mainly supply root and leaf growth and flower bud differentiation, but after entering the fruit setting stage, the demand for nutrients gradually increases to the peak, and the absorption of nitrogen, phosphorus and potassium account for about 50% of the total. In the later stages of fruiting, nutrient uptake begins to decline, especially nitrogen and potassium absorption. Nitrogen fertilizer can promote the growth of cucumber stems and male flowers. Phosphorus and potassium fertilizers can promote the development of female flowers.

Generally, more than 5,000 kg of farm fertilizer is applied per mu. 50-60 kg of diammonium phosphate or 100-150 kg of compound fertilizer, 50 kg of potassium fertilizer and 100 kg of superphosphate are applied per mu. If the greenhouse is planted continuously for many years, 2 kg of iron fertilizer, 2 kg of zinc fertilizer and 1 kg of boron fertilizer should be applied per mu.

After the fertilizer is evenly spread on the ground, it only needs to be turned once to play a role, and the utilization rate is quite high. Cucumbers contain a variety of vitamins and are rich in bioactive enzymes that boost metabolism. Cucumber is rich in vitamin E, which can prolong life and delay aging; Vitamin C in cucumbers has the effect of improving human immunity.

Cucurbitacin C in cucumber can improve the body's immune function and achieve the purpose of anti-tumor. It can also prolong the survival of patients with primary liver cancer for chronic hepatitis and refractory hepatitis. Cucumber juice can moisturize and remove wrinkles, suitable for beauty lovers; Cucumbers inhibit the conversion of carbohydrates into fat, and diabetics may eat more.

Cucumbers contain essential amino acids such as arginine, which are very beneficial for people with liver disease. Patients with liver disease can eat it regularly. Cucumbers are low in calories, rich in dietary fiber, delicious and easy to carry, so many friends like to eat cucumbers to reduce energy intake.