Spring management of small arched watermelon

The small arch shed watermelon is generally planted in the middle of April. The management points after planting and planting are introduced as follows:

First, colonization

1. Preparation before planting. Combined with land preparation, apply 5000-6000 kg of organic fertilizer per mu, 20 kg of diammonium phosphate, 15 kg of potassium sulfate, 7.5 kg of urea, 70% of the general application after mixing, and 30% concentrated ditch.

2. Colonization. Colonization is achieved when the temperature is stable above 12 °C at night. First, the ditch is 150 cm wide, the width of the ditch is 60-70 cm, watering the ditch, drying for 2 days, and applying 30% of the base fertilizer to the ditch. After mixing with the soil, the ditch is made 60-70 cm wide. 10 cm high, on the raft, 50 cm plant spacing to sit on the water planting seedlings, after the water seepage, cover the soil, while planting the seedlings to buckle the shed, the shed film width is 2 meters, the arch height is 50-60 cm, and the soil is tightly pressed around the plant. .

Second, management after planting

1. Watering. After planting the seedlings, pour a slow seedling water. If the weather is dry, water can be poured before flowering to promote flowering and fruit setting. After the melon is sitting, it should be watered in time to keep the surface dry and see wet.

2. Fertilize. When the melon is sitting on the size of the egg, 8 kg of urea and 7.5 kg of potassium sulfate are applied in combination with the watering mu. When the melon enters the expansion period, 8.5 kg of urea is applied in combination with watering.

3. Temperature management. After the planting, the arch shed is closed, and it is kept at 30°C-34°C during the day and 15°C-18°C at night. After the seedling is kept, it will be kept at 28°C-30°C during the daytime and 14°C-16°C at night. If it exceeds 32°C, it should be properly ventilated. The ventilation is gradually increased as the external temperature rises, and the nighttime temperature exceeds 18 °C to properly ventilate.

4. Interplanting. Combine the ventilation and remove the membrane, carry out 1-2 times of cultivating, and remove the membrane and place the vine in the sputum.

5. Plant adjustment.

(1) Pruning: After the watermelon is stretched, the roots should be “rooted”, and the melons should be pressed down, and the soil should be grounded on the back side of the roots, so that the melons can be stretched to the vines, and the double vines (or three vines) are pruned, except for the main The vines are left with 1 (or 2) strong side vines at the base of the main vine.

(2) Pressure vine: With the vine growth, you can use the soil to crush the vine, and straighten the vine to promote the growth of adventitious roots.

(3) Determining the part of the melon: It is advisable to leave the second female flower of the main vine, and the third female flower can be left without sitting, and the second female flower is still left.

(4) snoring and topping: After the main vine is sitting, leave 15-18 leaves in the upper part of the melon, and leave 8-10 leaves on the other side.

6. Artificial assisted pollination. When the second to third female flowers are opened, the male flowers can be removed at 6-8 in the morning, and the female flowers are applied to the head of the female flower, and a male flower can be coated with 2-3 female flowers.

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