Cucumber in traditional greenhouse

Cucumber, also known as cucumber, cucumber, melon, cucumber and so on. With its sweet and delicious taste, it is loved by everyone.

In summer, cold dishes should be removed, which is beneficial to water health.

Cucumber is rich in nutritional value and very beneficial to human body.

So today, let's learn about greenhouse cucumber planting methods and greenhouse cucumber management techniques in summer.

Method for plan cucumber in greenhouse

Seeding method of cucumber

1, variety selection: cucumber cultivation should choose excellent varieties with low temperature tolerance in the early stage, high temperature tolerance in the later stage and strong disease resistance.

2. Seed treatment: the cucumber seeds are dried 1~3 days before sowing, scalded with warm water at 55℃ after drying 10~ 15 minutes, continuously stirred until the water temperature drops to 30~35℃, repeatedly scrubbed the seeds, washed the mucus with clear water, soaked for 3~4 hours, and washed and soaked with clear water.

3. Soil preparation: The nutrient soil of cucumber should be mixed with high-quality decomposed organic fertilizer, accounting for 30%. Soil and organic fertilizer should be mixed evenly and sieved.

Add 1 00g carbendazim into the screened nutrient soil according to1m3 soil, and mix well to make medicinal soil.

4. Timely sowing: The sowing time of cucumber is 65438+ 10 in the middle and late October, and seedlings can be raised in heating greenhouse or energy-saving solar greenhouse. The nutrient bowl with a diameter of 65,438+00 cm and a height of 65,438+00 cm is filled with 8 cm of nutrient soil, which is permeable to water. After water is permeable, 65,438+0 germinated seeds are sown in each nutrient bowl and covered with medicinal soil 65,438.

Seedling management of cucumber

1, plastic film mulching: after cucumber is sown, it will be sealed with plastic film for 2-3 days, and when two-thirds of cotyledons are unearthed, the ground will be uncovered in time.

Water as little as possible at seedling stage to prevent high seedlings from appearing in high temperature and high humidity, and uncover grass in time to increase light.

2. Temperature management: Generally, the daytime temperature should be controlled at 25~30℃, not too high, and the nighttime temperature should be controlled below 15℃, 12~ 13℃, and the seedlings should be tempered 7~ 10 days before sowing, so that the grass in the greenhouse can be uncovered early and covered late.

3. Standard of strong seedling: seedling age is about 35 days, plant height is 15 ~ 20cm, 3 leaves 1, cotyledons are complete, internodes are short and thick, leaves are dark green and thick, roots are developed, and they are healthy and disease-free.

Cucumber planting techniques

1. Soil preparation and fertilization: Fertilization should be based on organic fertilizer, supplemented by chemical fertilizer, and the fertilization method should be based on base fertilizer and supplemented by topdressing. According to the nutritional characteristics of vegetable growth and development, the law of fertilizer demand, soil nutrient content and target yield, the expert fertilization system is used to determine the amount of fertilizer applied to vegetables, and balanced fertilization is carried out to ensure the nutrient balance in the soil.

Generally, 5000 kg of high-quality decomposed organic fertilizer, 20 kg of urea, 75 kg of calcium superphosphate and 30 kg of potassium sulfate are applied to vegetable fields with medium fertility level.

After applying the base fertilizer, turn the ground to a depth of 30-40 cm, mix the soil and fertilizer evenly, rake it flat, make a ridge with a width of 1.2 m, and raise two high ridges with a distance of 50 cm in the ridge.

2. Four-film mulching: in early spring, the greenhouse adopts "four-film mulching", that is, one layer of greenhouse film, two layers of greenhouse film and one layer of small arch film are on the seedlings. Cover the greenhouse film 20 days before planting to increase the ground temperature. 10 cm ground temperature passes through 12℃ for three consecutive days to plant greenhouses.

5~7 days before planting, hang two layers of sheds with an interval of 20~30 cm, and use polyethylene drip-free plastic film with a thickness of 0.012 mm.

3. Sowing in time: Before sowing, spray bactericide on the seedbed once 1 day, and you can choose 50% carbendazim 500 times solution, 77% Keda 700 times solution and 75% chlorothalonil 1000 times solution.

Planting should be done on a sunny morning.

Dig ditches on the ridge and water it. When water seeps into the half ditch, put the seedlings at a spacing of about 32 cm. After the water seeped out, the ditch was sealed with soil. This method is called "water-stabilized seedlings", and about 3500 plants are planted per mu. After planting, buckle a small arch shed on the border.

Management technology of cucumber in greenhouse in summer

Causes of death of cucumber trees and its control measures

After cucumber is planted, the phenomenon of dead trees often appears. This is because:

First, the cause of dead seedlings or wilting

1. Fat damage.

One is the application of incompletely decomposed fertilizer, and the other is the high concentration of fertilizer.

2. Continuous rain or sudden clearing after rain and snow will cause acute wilting of cucumbers that are already short of water. If the time is long and the remedial measures are not timely, it will easily lead to the death of seedlings.

3. Unreasonable ventilation.

Cucumber enters the flowering and fruiting period, with high temperature on sunny days, large air release, rapid transpiration of leaves, and some plants with poor roots begin to wither, and the whole plant will wither when it is seriously dehydrated.

4. Frostbite or frostbite.

When the temperature is low or below-10℃, cucumber is prone to chilling injury or freezing injury in solar greenhouse.

Because of the high temperature in winter for many years, vegetable farmers are often caught off guard. When they encounter low temperature, they can't defend themselves, and their plants die from frostbite or freezing injury.

5. retting roots.

The phenomenon of seedling death caused by retting roots mostly occurs in seedbeds or shortly after planting. Too much water in seedbed or cultivation land at one time causes high soil moisture, rotten roots, wilting and even dead seedlings on the ground at low temperature.

Cultivation techniques of fruit cucumber in greenhouse

First, raise seedlings

1. Seedling raising time

According to the growth characteristics of fruit cucumber and the local actual situation, it is more suitable to raise seedlings in the middle and late February.

What should I do with the leaves at the bottom of cucumber?

Removing old leaves has many advantages.

Plastic film is useful, but its function is limited.

Plastic film in the shed can reduce moisture to a certain extent, but the lower parts of cucumber stems and vines near the ground are still places where moisture accumulates, and the old leaves at the lower parts are more prone to disease and will gradually infect upwards, causing greater harm. The cost of vegetable farmers for disease prevention is definitely higher than the labor cost of employees, so it is impossible to save money.

The plants are weak and the yield is low.

Vegetable farmers all know that the diseased leaves of old leaves will consume plant nutrients, but vegetable farmers often ignore the germs on the diseased leaves, which will also consume a lot of nutrients of the plants themselves. Therefore, the degree of disease plants decline quickly, which requires vegetable farmers to pay attention to and remove old leaves and sick leaves in time.

Control of cucumber albino leaf disease

I. Symptoms and manifestations

Cucumber albino leaf disease is a physiological disease that often occurs in cucumber production in solar greenhouse, especially in late winter and when cucumber enters full bloom in winter and spring.

The diseased leaves first turn green and white from the mesophyll between the main veins, and then spread around. Except for the green leaf margin, the mesophyll between veins of the whole leaf basically turns yellow and white, commonly known as "albino leaf" or "green ring leaf". The premature death of diseased leaves leads to weak plant growth and serious yield reduction.

Second, the cause of disease

The cause of cucumber albino leaf disease is magnesium deficiency.

Magnesium is the core component of plant chlorophyll. When cucumber plants enter full bloom, the demand for magnesium increases. If the supply of magnesium is insufficient at this time, cucumber leaves will be albino because of magnesium deficiency.

Magnesium deficiency in cucumber plants may be due to magnesium deficiency in soil; It may also be that there is no magnesium deficiency in the soil, but improper fertilization will make plants absorb magnesium and cause magnesium deficiency.

If too much potassium fertilizer or nitrogen fertilizer is used in production, it will affect the absorption of magnesium by plants, and insufficient phosphorus fertilizer will also cause the absorption of magnesium by plants.

Cucumber is not only nutritious, but also effective.

Cucumber has a large market supply, broad development prospects and large planting space.

It is also a good business opportunity for farmers' friends. Today, I recommend the planting method of cucumber in greenhouse for everyone. Greenhouse cucumber summer management technology can help you in the planting process.