How can watermelon bloom in spring bloom

At present, it is the season for seedlings and seedlings of open-water watermelons. In order to do a good job in the cultivation of watermelons and increase the income of farmers, the technical points for the cultivation of spring watermelons are described as follows:

First, choose a variety

According to the market demand, select the marketable variety, select the varieties with good quality, high yield, and strong disease resistance, such as Qinghongbao, Heifeng Overlord, Jingfengbao and so on.

Second, the choice of planting place

Planting watermelon plots to choose leeward sunny flatland, can't grow crops, planting should be selected, drainage and irrigation should be convenient, deep soil layer, organic matter rich land plots.

Two and a half months after the soil was deeply sun-dried, the soil was smashed and made into a 2.5-meter-wide trench with a 40-cm high side and a 20-cm angle on the other side. The depth of digging was 25 cm on the side of the sorghum. Planting ditch with a width of 40 cm, 1000-1500 kg of farmyard manure, 25 kg of ternary compound fertilizer, 1.5-2 kg of borax, and 4 kg of magnesium sulfate in the ditch, mixed fertilizer and backfilled soil .

Third, soaking

The seeds of full-grown watermelon seeds were soaked in warm water of 55°C and continuously agitated. When the water temperature dropped to 30°C, they were soaked for 5 hours. The mucus on the seed coat was washed, and the seeds were sowed immediately after the water was drained.

Fourth, appropriate sowing

In the early spring, the watermelon covered with mulch is suitable for sowing. The sowing date is appropriate in late April. The sowing method is on-demand in the middle of the film, with 2 to 3 capsules per hole. The sowing depth is 2 cm. After the seeds are planted, they are covered with fine soil. , Generally 200 grams per mu.

V. Seedling management and density

After emergence, pay attention to timely release of seedlings to prevent seedlings from dying. Watermelon seedlings can be planted when they have 3 to 4 leaves. Each watermelon planting density is 600 to 700 large watermelons and 700 to 700 small watermelons.

Six, field management

1. Fertilizer management. Pay attention to the careful application of Miao Fei Shen, Qiao Shi extension vinegar, re-expanded melon fertilizer. Miaomiao fertilizer is planted after 5 to 7 days after planting, usually using urea and compound fertilizer in a ratio of 1:2 to apply 0.3% solution for 1 time. Extensive vinegar is usually raised about 20 days after raising seedlings. Each plant uses 10-15 grams of urea, potassium 15 grams, 35 centimeters on both sides of the site outside the site to open a depth of 25 cm ditch, the fertilizer applied in the ditch cover soil; expansion of the melon fertilizer in young fruit size, each 30 to 40 grams of urea, 15 grams of superphosphate, and 30 to 40 grams of potassium fertilizer were applied. The application method was the same as that of extending vines 50 centimeters outside the site of the planting, but the location of the furrows should be perpendicular to the culm of the culm.

Spring watermelon must be properly drained after rain, so that the rain ditch dry. Sitting in the melon meets high temperature and drought, it can be furrowed in the evening, but it must be kept dry.

2. Weeding and weeding. Weeding and weeding should be carried out when the watermelon vine grows 40 to 50 cm. If the cultivars grow too long and cultivator, not only is the operation inconvenient, but also it is easy to damage the vine leaves. The loose soil can easily splash the leaves, flowers and young melons after the rain. .

3. Whole vines. The common methods of pruning are double and triple. The double vines retain a strong side vine of the main vine and the main vine, removing the remaining side vines as soon as possible. This method is suitable for dense planting and has a high rate of cultivars. It is used more often in early mature cultivation or in relatively infertile soils. The three vines retain the main vines and select two robust side vines from the third to fifth quarters of the main vine base to remove the other side vines. Late-maturing varieties are used in this way. After the main vines are out of the vine and the first female flower is open, the guava seedlings are sorted every 3 to 4 days so that the main vine spreads forward regularly. After flowering, no vinegar is applied.

4. Artificial pollination. Spring watermelons are prone to continuous rainy weather, affecting insect activity, and artificial pollination can be used to increase the rate of sitting.

5. Promote sitting melon. It is ideal to leave the second and third female flowers on the main vine. The female flowers far from the main root have smaller results and generally should not be left.

6. Fruit management. In the process of pruning and indulging cultivation, sometimes the knots of several melons or melons on a single plant are not optimal. At this time, melons should be taken to remove low-grade or melon-formed and sickly wounded young melons. Retain and ensure the development of normal fruit at normal nodes.

VII. Pest Control

The prevention and control of watermelon pests and diseases should adopt comprehensive prevention and control measures.

1. Agricultural control. The first is to clear the roadside weeds near the melon field, reduce the host that can be used in the early stage of pests, and second, pay attention to clearing the diseased plants of the watermelons, and remove the diseased plants by deep burial or burning, and do not throw them away in the ditch or road. side.

2. Chemical control. To control fusarium wilt, 50% carbendazim WP 500 times solution or 70% thiophanate-methyl 1000 time solution can be used to irrigate the roots once per time, 250 ml per hole irrigating solution. Virus disease is mainly transmitted by locusts. It is important to control fleas and prevent disease. Before the peak of locusts, 20% imidacloprid can be sprayed with 1500 times liquid. Virus-infected plants were found to be able to spray 20% virus A600 times and spray once every 7 days for 2 or 3 consecutive times. At the early stage of anthrax attack, spray 80% of anthrax 800 times or 70% thiophanate-methyl WP 500 times.

Eight, harvest

30 to 35 days after pollination can be mature mining market. When harvesting, the cucurbits and a piece of melon vine should be kept to prevent the invading bacteria and have a certain freshness.

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