Cucumber cultivation techniques

Cucumber is widely cultivated throughout China and is now widely grown in temperate and tropical regions. Cucumbers are warm and cold, and they are one of the main greenhouse products. Representative varieties in Hebei include Shandong Xintai Mickey, Beijing Giant Thorngourd, Tangshan Autumn Gourd, Beijing Loofah Blue and Hybrid Zhongnong 1101, Jinyan No. 1-7, Jinza No. 1, Jinza No. 2, Luchun 32, etc. The main reason is that the natural conditions of moist soil and sunny weather are not sensitive to the response to the length of sunshine. Fruit sticks, green, dense tumor, more white thorns. Ripe fruit yellow-white, no reticulate.

First, the growth requirements

1, temperature: cucumber hi warm, not cold. Fertility temperature is 10 ~ 32 Â°C. Generally during the day 25 ~ 32 Â°C, 15 ~ 18 Â°C at night, the best growth; the most suitable temperature is 20 ~ 25 Â°C, the minimum is about 15 Â°C. The most suitable temperature difference between day and night 10 ~ 15 Â°C. The high temperature of 35 Â°C cucumber photosynthesis bad, 45 Â°C high temperature barrier, low temperature -2 ~ 0 Â°C freeze-dead, if the low-temperature hardening can withstand 3 Â°C low temperature.

2. Illumination: North China breeds have strict requirements on the length of sunshine. They have become neutral sunshine plants with a light saturation point of 55,000 lux and a light compensation point of 1500 lux. Most varieties are under short-day conditions of 8 to 11 hours. Good growth.

3, water: cucumber production is high, the amount of water required. The suitable soil moisture is 60 to 90%. The water during the seedling period should not be too high, and the soil moisture should be 60 to 70%. During the result period, sufficient water must be supplied and the soil moisture is 80 to 90%. The appropriate relative humidity of cucumber is 60 to 90%. If the relative humidity of the air is too high, it is easy to cause the disease, resulting in reduced production.

4. Soil: Cucumbers are wet and not resistant to earthworms, but they are fat and not fat, and fertile soils rich in organic matter should be selected. It is generally preferred to have a pH of between 5.5 and 7.2 but it is best to have a pH of 6.5.

Second, open soil cucumber cultivation techniques

1. Variety selection: The varieties with high yield, strong disease resistance and good commercial quality should be selected.

2. Seedling raising: seedling age about 35 days, strong seedlings standard: cotyledon intact, with 3-5 true leaves, shorter internodes, petal shank angle of 45 degrees with the main vine, dark green leaves, leaf hypertrophy, stems Thick, strong root system, no pests and diseases.

3, fertilization to do ç•¦: soil preparation, fertilization of organic fertilizer 5 cubic meters, superphosphate 25-30 kg or 10-15 kg of diammonium phosphate (superphosphate 5-5 kg â€‹â€‹per cubic meter, diammonium phosphate 2-3 Per cubic meter). Before planting, plow tillage, hoe width 1.2 meters, height 15 cm or more, and mulching.

4, colonization

(1) Determination of the planting period: Planting will be carried out as soon as possible after the planting is ensured, and planted in the end of April and early May in Chengde area. Temperature requirements: Minimum night temperature above 5Â°C, soil temperature above 0Â°C at 12Â°C. The cucumber in the autumn dew adopts the live broadcast method.

(2) Density of colonization: 4000-4500 plants/mu, colonization in size, small row spacing 40 cm, large row spacing 80 cm, plant spacing 25-30 cm, legal planting in dark water.

(3) Field management: The first is the insertion rack. After the planting, insert the frame early, windproof pumping seedlings, plug racks can use flower stand or herringbone frame, about 8-10 cm from the root. Followed by tied vines. The â€œ8â€ method is used to bind the vines and prevent the penis and stem sag. Every 2-3 knots should be tied once in the afternoon. In the morning, the stems and branches are easy to break. The tightness of the bound vines should be strong and weak. The plants with strong growth potential should be tied tightly and the growth points should be the same. Once again, it is pruning and picking. The main nectar should be removed from all lateral branches. The side vines leave one to two tips of the leaves after the pod, and remove all tendrils. When the stem exceeds the head, it must be tipped promptly to promote the growth of the lower part of the melon, and it can also be used to suppress the growth of the upper part by twisting the tip. The last is fertilizer management. Timely watering and cultivating, the amount of water and the number of times depending on the weather, growth period. The seedling water is poured 5 to 7 days after planting; water, cultivator, and seedlings are planted before sitting on the melons; watering of the melons is performed when the melons are 10 to 12 centimeters long; the result is watered once every 5 to 7 days. The principle of top-dressing is to lightly weigh and lightly weight, and a small number of times, so that the melon fertilizer will be applied after the root melon sat, and the melon fertilizer will be taken after the root melon is harvested. Promote the use of organic fertilizer topdressing.

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How to connect the mobile phone to the PTZ Indoor Camera How to connect the mobile phone to the monitoring camera
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