Cultivation techniques of cucumber in greenhouse in vegetable cultivation techniques

Cultivation techniques of cucumber in greenhouse in vegetable cultivation techniques

Cucumber is the best kind of vegetable cultivated in greenhouse. Cucumbers in early spring are generally cultivated in greenhouses. It can be put on the market 40-50 days in advance. The yield per mu is more than 10,000 jin. The masses summed up the management technology of cucumber in early spring in the greenhouse as "one water, two fertilizers and three air exchange." That is, to adjust the temperature and humidity in the shed with water: to be in charge of fertilizer. Apply sufficient base fertilizer. Timely topdressing: according to the requirements of cucumber on greenhouse temperature and humidity. Instantly ventilate and breathe. As a result, the early maturity and high yield of cucumber can be obtained. The key points of cultivation techniques are as follows:

(1) selection of suitable varieties

The varieties of early maturity and cold tolerance Xiangchun No. 2, Xiangchun No. 3, Jinyan No. 4 and Jinlu No. 2 should be selected for cultivation in greenhouse.

(2) to sow seeds early. Cultivate strong seedlings

The suitable sowing date is the first and middle of February. The brewing type electric hotbed was used to raise seedlings. Sow the seeds after soaking and sprouting on the seedbed. Cover the seeds with culture soil. Then pour through the bottom water. Cover with plastic film. Before emergence of seedlings. The shed is not ventilated. After emergence of seedlings. Remove the mulch. Ventilate and cool down. Prevent seedlings from growing in vain. When the seedlings reach two cotyledons, they are moved into a nutritious paper bowl. Two plants per bowl. Drench in the water to press the smile. Raise the temperature of the shed properly. Wait until after the slow seedling stage. Then ventilate and cool down.

(3) timely planting. Guard against low temperature in advance

Melon seedlings can be planted when they are 40-50 days old and 4-5 true leaves. The planting period in our province is from late March to early April. The seedlings should be refined one week before planting. After planting. In case of a return to warmth. Effective measures should be taken to prevent the cold. Ensure that the colonized seedlings are protected from frost damage.

(4) apply sufficient base fertilizer. Reasonable close planting

Each standard shed (4X20 square meters) shall apply 1500 kg of barnyard manure before turning the ground. Compound fertilizer weighs 15 kilos. The vegetables withered 15 kilos. Prepare the land for border formation. The bed is 1 meter wide. Double-row planting. The distance between plants is about 40 cm. Plant 2200 holes per mu. Two plants per hole.

(5) Field management

1. It is generally not ventilated 5-7 days after timely ventilation. Enter the result period. Keep out of the heat. The temperature in the shed is high. Plants are apt to grow overgrown. The number of female flowers decreased. The first measure to control the high temperature is ventilation. Second, irrigation and humidification. The principle of ventilation is: a small wind before a strong wind. It is ventilated early on a sunny day. It is cloudy and ventilated at night. The south wind is strong and ventilated. The north wind is slightly ventilated. In a word. Excessive ventilation is prevented in the early stage of cucumber growth. Avoid insufficient ventilation in the middle and later stages.

two。 Scientific topdressing cucumber before and after harvest. Topdressing and irrigating should begin. Topdressing is carried out in stages. Organic fertilizer was the main topdressing for the first time. Generally, 100 kilograms of vegetables are applied per mu. 10 kilograms of superphosphate. After that, topdressing is mainly quick-acting fertilizer. Chemical fertilizer is applied at intervals with human feces and urine. Usually once a week. The amount of topdressing per mu is about 2500 kg of human feces and urine. 35 kilos of chemical fertilizer.

3. After setting up the frame to tie the vine and pick the cucumber to slow down the seedling. Brackets should be provided. Plastic fiber straps are mainly used to cultivate cucumbers in plastic sheds. The support should be tied up in time at the same time. Tie the vine for 4 or 5 times in a row. The axillary buds of cucumber leaves have strong regeneration ability. The method of plant adjustment should be adopted to prolong the fruiting period. Promote the middle and lower parts to bear more melons. Generally speaking。 Varieties based on the main vine should remove part of the tendrils in time before harvest. The heart can be removed when the main vine reaches 20: 25 knots. For varieties with strong growth potential and many lateral vines. All lateral vines below the root melon should be removed. The other lateral vines in the upper part leave 1 or 2 leaves in front of the first female flower. Pick your heart in time.

4. Diseases and insect pests control cucumber pests include land tiger and Huangshou melon. The ground tiger can be caught artificially or killed 800 times with trichlorfon before the third instar. Huangshou melon can be sprayed 800 times by trichlorfon. Diseases include Fusarium wilt, downy mildew and powdery mildew. The prevention and control methods are as follows: (1) 1000-fold solution of dimethazone, (2) agricultural streptomycin 150~250ppm spray, and (3) prevention with lime half-dose Bordeaux solution.