Hebei Handan is suitable for the growth of that kind of watermelon varieties

General planting of watermelon varieties are black beauty watermelon, jingxin watermelon, fengguang watermelon, 8424 watermelon, xiaolan watermelon, small unicorn watermelon, early spring red jade watermelon, the new first watermelon, you can according to their own needs of the variety of selection.

Cultivation techniques

Selection

It is advisable to choose a sandy loam soil with a deep layer of soil, loose and fertile soil, convenient drainage and irrigation, and a dry land within 5 years, paddy fields within 3 years have not been planted with melon crops in the field cultivation.

Fertilizing

Pre-winter melon field deep plowing and freezing, transplanting before the right time to prepare the ground. The melon field should be three ditches supporting, so that the rain stops the field dry, soil loose moisture surface flat. Base fertilizer to high-quality organic fertilizer and cake fertilizer, inorganic fertilizer, supplemented, generally accounted for 60% of the total amount of fertilizer - 70%, nitrogen, phosphorus, potassium should be a reasonable mix of micro-fertilizer according to the lack of pigmentation, respectively, bottom or spraying. The amount of fertilizer due to soil fertility and cultivars, generally medium fertility fields, combined with the land application per 667 square meters of rotted organic fertilizer 3000-4000 kg, 45% nitro-sulfur-based or potassium sulfate-type controlled-release fertilizer 60-80 kg, do not apply chlorine-containing fertilizers. Small fruit type watermelon and grafting cultivation of watermelon can be less 20% fertilizer. Use raised beds for planting, wide beds 4-4.5 meters, narrow beds 2.0-2.5 meters. Wide beds can be planted on both sides of the beds, melon vines to climb, can also be planted in the middle of the melon vines on both sides of the climb, narrow beds in one side of the planting melon vines on one side of the climb.

Planting

Early watermelon seedlings about 1 month old, grow 2-3 true leaves can be planted. Medium maturity watermelon seedlings age 20-25 days, late maturity watermelon seedlings age 7-10 days can be planted. Plant 2 rows in wide beds and 1 row in narrow beds. Small fruit type watermelon trellis type cultivation, every 667 square meters planting 1500-1800 plants; climbing type cultivation, using three or four vine branching, every 667 square meters planting 600-750 plants. Medium and large watermelon planting 650-700 plants per 667 square meters, grafted seedless watermelon planting 300-400 plants per 667 square meters. According to the row spacing digging planting hole, the nutrition bowl according to the cotyledons and the direction of the bed to the same direction into the planting hole, the depth of the bed with the level, with fine soil to fill the seedling holes, with animal fertilizer and pharmaceutical watering root water. While transplanting side cover film, the film width is not narrower than 80 cm, cover film to achieve the moisture surface fine flat, film and moisture surface tightly, sealed around, broken film with fine soil sealed tight.

Rectification of vines

Three vines are generally used for rectification. In the main vine 8-9 leaves, choose to stay in the main vine and two strong side vines, the rest of the children and grandchildren vine all removed. The whole thing should not be carried out in rainy days to prevent the spread of disease. When the vine grows to about 50 centimeters, combined with the whole branch with soil pressure vine, and then the interval of 3-4 sections and then pressure 1 time, each vine *** pressure 2-3 times, the melon vine evenly arranged.

Melon sitting

Selected to stay on the main vine of the 2nd and 3rd female flowers or side trails of the 1st and 2nd female flowers sitting melon. In order to ensure that the melon sitting at the appropriate level, in case of low temperature or rainy weather, artificial pollination should be used, in order to protect the flowers and fruits. After the melon is seated, the whole fine shoot the ground below the young melon and make a slope, and then the young melon will be placed along the slope, and make the young melon and vine swing in a straight line. After the fruit is fully grown, the melon should be turned in time. Turn the melon in one direction, about 1/3 of a turn at a time.

Fertilizer

When the young melon grows to egg size, depending on the plant growth trend of melon fertilizer, generally per 667 square meters of 45% nitro-sulfur-based or potassium sulfate-type controlled release fertilizer 15-20 kg.

Moisture

The seedling period should be watered as little as possible, or even no watering, to promote the formation of a well-developed root system; blossoming and fruiting before the control of water, to prevent the growth of madness; after the fruiting, you should ensure an adequate supply of water in order to facilitate the expansion of the fruit, increase the weight. Harvest before 7-10 days should not be watered, so that the fruit accumulation of sugar. Water shortage should be in the lower temperature of the morning and evening night irrigation. Adopt furrow irrigation seepage moisture, that is, irrigation in the border furrow, to be water penetration melon ridge, immediately drain the remaining water in the furrow. Irrigation and rain immediately after draining the field of water, otherwise easy to cause root rot vine.

Harvesting

Harvesting should be done in the morning. Long-distance transportation or storage, can be harvested at eight ripe; suburban sales on the same day, can be harvested at nine ripe, avoid raw melon market. General early varieties in the pollination of about 30 days, about 35 days in the middle ripe species, late ripe species about 40 days to harvest. Fruit ripening fast or slow, affected by temperature, light intensity and time, it is best to indicate the date of pollination, is expected to take a sample of ripe melon to cut open the fruit, measure its sugar and taste, confirm the maturity of the batch after the marking of harvesting.