The thornless micro cucumber, also known as the Dutch cucumber, has a strong growth and good cold resistance. It is suitable for early spring, late autumn and winter greenhouse cultivation. Its high resistance to powdery mildew and scab, resistant to downy mildew, high yield, annual production of up to 20,000 kilograms per mu.
Nutritional seedlings
Use a loam soil not grown with cucurbit vegetables and a sifted organic fertilizer in a ratio of 7:3 or 6:4. If fertility is insufficient, add 100 g of potassium dihydrogen phosphate per cubic meter. Mix well and add nutrients. Within the range of 1.2~1.5 meters, the width of seedlings is appropriate.
Timely sowing
Before sowing, the pot should be watered first, then the seeds should be sowed. One seed per hole should be sown, and the seeds should be covered with sieving fine moist soil after sowing. The day-night temperature before emergence should be maintained at 24°C~26°C, generally 4~6 days can be reached. After the seedlings are flushed, the temperature is appropriately lowered. The temperature is maintained at 23°C-25°C during the day and 16°C-18°C during the night.
In addition, during the seedling stage to actively prevent pests and diseases, should strictly control the spraying time, spraying concentration and spraying frequency. Spraying should be carried out in the evening. The droplets should be fine, the spray should be uniform, and the foliar should be covered with a fine spray. Do not spray again to prevent phytotoxicity.
Timely colonization
Before planting, prepare 10 to 15 days before planting, use fine soil preparation, apply organic compost with rich compost, apply 5,000 kg of high-quality organic fertilizer per acre, 100 kg of diammonium, and use 70-centimeter and other row spacing to make cockroaches. Small rows are planted, and the rows are 80 centimeters apart and 60 centimeters apart.
Planting When the seedlings grow to two leaves and one heart can be planted, depending on the soil moisture 3 to 5 days before planting, to make the earthworms in advance. Set the planting selection in the afternoon on a sunny day. Divide plants by 35 cm from the planting site. Planting seedlings should be carried out as much as possible. The planting process should be carried out with as many soil ridges as possible, with less root damage. Because the seedling age is shorter, the planting depth should not be too deep, and the planting of 2500~2800 mus. .
Post-planting management
The outside temperature during the temperature management is still high, allowing the seedlings to grow for a period of time in the open ground. If the temperature and the ground temperature at noon are too high, measures should be taken to cool the sun.
Fertilizer management watering should be little water pouring to promote the main. After planting, pour 2 or 3 times of water. In addition to the colonization water, the next day, the seedlings should be irrigated with water again. After 7-8 days, the seedlings will be gradually regenerated, and the water will be poured again after the growth is resumed. Timely watering is particularly important to promote easing seedlings and maintaining vigorous growth of plants. If the base fertilizer is insufficient, you can open the ditch on both sides of the planting line before the third watering, suitable for applying a small amount of organic fertilizer, pay attention to can not apply nitrogen fertilizer. After fertilization, the plots should be protected by loose soil. The next time the top dressing is applied, it should be determined according to the situation during the expansion stage of the root melons. When the soil is short of water and the plant growth is weak, it is necessary to advance to the root before the expansion of the root melons. No water shortage or strong growth may be postponed. After harvesting the root melon. This top dressing is generally combined with watering into diammonium.
Harvesting period management
The temperature in the early stage of management should not be too high, keep it at 25°C~30°C during the day, 13°C~15°C during the night, and 20°C~22°C during the cloudy days. When the outside temperature is 12°C~14°C, insulation measures should be taken. Grass cover, non-woven fabrics and so on. In winter, the temperature is controlled at 23°C~25°C during the day and cannot exceed 28°C. The lowest temperature is 12°C~14°C in the morning and the temperature in the cloudy days can be appropriately reduced.
The early stage of the melon harvesting management, when the outside temperature is high, is generally about 1 day for pouring water for about 10 days, and then pouring it once every 15 days with the temperature decreasing. Every 1 to 2 water chase 1 fertilization, each time the top-dressing organic fertilizer 100 ~ 200 kg or diammonium 10 ~ 20 kg, preferably the two alternately, so that the harvest period can be maintained until the following year 2 to 3 months. In the melon period can be top dressing, generally spraying 0.2% potassium dihydrogen phosphate solution, and can use carbon dioxide gas fertilizer. Hanging vines, pruning and other management in the plant 8 to 9 leaves, vines about 40 cm, began to use nylon rope hanging vines, fixed stems. In terms of plant adjustments, single branching (with sticky cucumbers) and 2-3 prunings, that is to say, all the branches below the 7th section of the plant were removed, and more than 1 section of the lateral branches of the plants were preserved after 1 or more days. After reaching the end of the 10~12 Festival, the main vines will be topped at 22-25. In order to prevent the roots from falling, more than one root melon (2 or more) should be reserved, and the rest should be removed. In the growth and development process of some cucumber varieties, there is often a section of two melons or a section of multiple melons, which shows that reproductive growth is stronger than vegetative growth, and the necessary fruit thinning and fruit thinning should also be carried out to regulate plants. The vegetative growth.