The summer cucumber sowing time is in the middle and late May, and the listing period is in late July. It is the end of the greenhouse cucumber and the off-season of the autumn cucumber. The price is high and the benefit is high. However, the whole growth period of summer cucumber is in the hot and rainy season, so only scientific management can achieve the goal of high yield and stable production.
Preparation before sowing
Choose the good varieties of summer cucumber varieties that are resistant to high temperature, disease resistance, sorghum resistance, high yield and excellent quality. Such as Tianjin Spring 4, 5, Zhongnong 8th.
Site preparation
For the planting of summer cucumbers, it is better to choose the gas permeability, water pouring conditions and drainage, and the plots of the melon crops have not been planted in the first 3 years. Combined with land preparation, 90,000 kg of farmer's fertilizer per hectare, 600 kg of calcium phosphate, 300 kg of ammonium bicarbonate, and 75 kg of multi-element boron fertilizer. After leveling, the sputum is about 1 m, and the crop is sown after 3 days of exposure.
Soaking and disinfecting
1 warm soup soaked. After 2~3h of drying, place the seeds in warm water at 60°C and stir constantly. After the water temperature drops to 30°C, soak for 4h, then remove them with wet gauze and place them at 30～35°C for germination. Half of the seeds are seeded. It can be sown in white.
2 disinfection. That is, soaking seeds with 50% carbendazim WP 500 times for 2 hours; or 50% carbendazim WP for seed dressing at 0.4% of seed weight; or using 25% Phytophthora WP for seed weight 0.3% seed dressing.
Suitable sowing
The sowing time of summer cucumber is generally in the middle and late May, and it can be sown after soaking and germination or direct seeding of dry seeds. Each row is 2 rows, the hole distance is about 25cm, and 2 to 3 seeds are planted per hole, about 7. 50,000 holes, paved after the sowing.
Field management
Broken film
When the melon seedlings are unearthed, the membrane should be broken in time. When the weather is dry, it should be watered at night. After 7 days of Miaoqi, the seedlings were fixed, and one strong seedling was kept in each hole. After planting, water was poured once.
Pruning
When the cucumber seedlings have 3 to 4 leaves, they should be inserted into the bracket to fix the vines in time. When tying the vines, the vines are stretched back to the top of the shelf to extend the main vines to suppress the length of the vines, so that the vines are evenly distributed on the shelf, prompting the multi-growth melon, and at the same time removing the tendrils and the disease and the old leaves.
Management of the melon period
The summer cucumber grows vigorously, requires a large amount of water and fertilizer, and there is more rainfall in this period. The soil nutrients are easily lost. Therefore, water should be poured once every 57 days, and the fertilizer should be chased once every 2 times of water. Each hectare is applied with 225 kg of compound fertilizer or 225 kg of urea and 225 kg of potassium fertilizer. At the same time, a mixture of 0.3% potassium dihydrogen phosphate and 3% urea is sprayed on the foliage. Watering should be carried out in the evening or in the morning, and it should not be watered at noon on sunny days. In case of high temperature and drought, watering once every 1~2d, when there is continuous rain or heavy rain, drain and prevent flooding. After the hot rain, the well water is cooled in time.
Pest control
The summer pests of Cucumber are heavier, and the main pests are aphids, cabbage caterpillars, red spiders, melons, whitefly, etc.; the main diseases are downy mildew, powdery mildew, anthracnose, bacterial angular leaf spot, blight, and tripping. Sick and so on. For the occurrence of summer cucumber pests and diseases, early prevention and early treatment should be done to prevent the main disease, and the plants should be used in time after the onset of the disease.
aphid
It can be controlled by carbendazim and dexamethasone zinc, or sprayed with 10% imidacloprid 2000 times solution and 1.5% avidin 1500 times solution after spraying aphids. The front and back sides of the leaves should be sprayed evenly.
cabbage caterpillar
Choose celite 2000 times liquid, or Awei worm clear 1500 times liquid leaf spray.
Red spider
It is better to use 2000~3000 times liquid spray with Tiannuo, and it has a long-lasting effect.
Melon
Control with 25% insecticidal double 500 times solution, or BT biopesticide 500 times solution or 5% Regent 2000 times solution.
Whitefly
1 physical control. Whitefly is sensitive to yellow and has strong coloration. Yellow plate is set in the greenhouse to trap adults.
Method: Using waste fiberboard or cardboard, cut into 1m×0.2m strips, paint with orange yellow, and then apply a layer of viscous oil, set 300-450 pieces per hectare, evenly placed between rows, height Same as plant height. When the whitefly is stuck to the surface, reapply the sticky oil in time.
2 chemical control: spray with ingenious 1000 ~ 1500 times liquid.
Downy mildew
Control with carbendazim, dexamethasone zinc, or spray with 72% DuPont's WP WP 600-800 times, 72% Phytophthora 600-800 times, 70% gram cream WP 800 times Spray once every 5 to 7 days, and spray 2 to 3 times.
anthrax
At the beginning of the disease, the plants were sprayed with 1000 times of water by Tiannuo granules, and the leaves were sprayed with 50% of anthrax fumei 500 times and 70% of methyl thiophanate WP 800 times.
Bacterial angular spot
It can be sprayed with 30% DT bactericide 500 times solution.
powdery mildew
In the early stage of the disease, the Tiannuo granules were sprayed with 1000 times of water, and sprayed once every 5 to 7 days, and repeated 2 to 3 times.
Fusarium wilt
The roots were filled with 70% dikesone 1000 times solution or 600 times solution of wilting spirit, and the drug was administrated once every 7 to 10 days for 2 to 3 times.
Tripping disease
The seedling substrate is treated with 800 times of Dixon, 1000 times of soil bacteria, or sprayed with seedlings and other agents at the seedling stage to prevent the occurrence of melon seedlings.
Harvest at the right time
During the growing period of summer cucumber, the temperature is high, and the melon strip grows fast. When harvesting, it should be collected early. Generally, it is better to harvest the next day. During the melon period, the melon can be picked every day to ensure the freshness of the melon and the vigorous growth of the melon.
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