1, seed preparation

Before putting the seeds into the soil, first of all, the seeds should be immersed in warm water at a temperature of 50 degrees Celsius for 10min, or with a concentration of 50 percent of Dorinomyces 500 solution for 30-60min, and then soaked in water for 4h. After that, the seeds are wrapped in a damp towel and kept at a constant temperature of 30-35 degrees Celsius, in order to promote the germination of the seeds. The purpose is to promote seed germination.

2, seedling management

Waiting for the towel wrapped in the seed germination can be transplanted to the culture bag in the culture soil, the specific method is first in the culture bag with a bamboo pole inserted in a deeper than the 1, 5cm or so of the hole, and then just sprouted seeds rooted down into the hole, and then drenched with water. When the cotyledons emerge, make sure that the soil in the culture bag is moist, and spray evenly with a disinfectant solution of 30% metribuzin and 10% doramectin. After the cotyledons have emerged, the amount of water sprayed should be controlled in order to prevent the emergence of "tall seedlings". To prevent sudden collapse disease during seedling emergence, a 10% solution of Khao Sai 800 or a 50% solution of Doremi 500 times should be applied once a week for two to three weeks after the emergence of cotyledons. When the seedlings grow to have two to three true leaves, additional compound fertilizer solution should be applied, and care should be taken not to drip the compound fertilizer onto the seedlings when drenching the fertilizer. When the seedlings grow to four true leaves can be out of the seedlings, in the seedlings before the use of insecticides to prevent the leaf fly and the yellow guard melon and other pests breeding and reproduction.

3, water and fertilizer work

In the black beauty of watermelon growth in the early stage, to focus mainly on the application of nitrogen fertilizer, and also a small amount of potash and phosphate fertilizer, in order to promote the rapid growth of the melon vine. In the flowering period, the appropriate control to reduce the application of nitrogen fertilizer, increase the amount of phosphorus fertilizer and potash fertilizer, the purpose is to improve the plant's sitting rate. After the watermelon grows on the plant, the amount of nitrogen fertilizer should be increased again, in order to promote the growth of watermelon quickly. Finally, during the pre-mature stage of melon ripening, emphasis should be placed on increasing the amount of potash fertilizer in order to improve the quality of melons. In the entire Black Beauty watermelon growth cycle, the compound fertilizer applied per mu is most appropriate at about 20kg, urea 15kg is appropriate, calcium phosphate about 40kg.

Throughout the Black Beauty watermelon growth cycle, attention should be paid to maintaining adequate soil moisture, in the extension of the melon vines, to keep the soil moist, after the melon, to ensure that the plant's growth environment has sufficient water can be absorbed. However, attention should be paid to the drainage of rainwater, especially the large amount of rainfall caused by typhoons, and watermelons are prohibited from being immersed in water during the growing cycle.

4, branches and vines finishing work

When the black beauty watermelon began to line vine, it is necessary to carry out the work of plucking, each main vine to stay three or four side vines, retain the principle of side vine growth for strong. After sitting in the melon to remove some of the fruitless side vines, the appropriate retention of some of the main reason is to ensure the growth of watermelon nutrient supply.

5, pollination and melon work

Black Beauty watermelon pollination is generally used in the way of artificial pollination, in artificial pollination to ensure that the matching of similar flowering varieties as the pollination plant. Specific methods are, pollination at about ten o'clock in the afternoon, pollination to ensure that there is no watering and fertilization work, so as not to affect the rate of watermelon watermelon. When the female flowers are in full bloom, the stigma mucus is the most, the collection of open male flowers for full pollination, to ensure that the entire stigma should be covered with pollen, in order to improve the plant's rate of sitting.

For the black beauty watermelon retaining melon problem, we first need to know, the main vine of the first female flowers of the watermelon quality is not very good, the melon shape is flat, the melon skin is thicker, easy to hollow, so should not be retained. In the main vine of the second, third female flowers and side vine growth and development of the melon to be retained, the principle is to observe the development of the branches and vines, the general development of the branches and vines of the watermelon should be retained in good condition.

6, disease and pest control

In the black beauty watermelon throughout the growth cycle of the main diseases are trailing cut disease, anthracnose, foliar disease, powdery mildew, epidemics and so on. The prevention and control of anthracnose should be discovered as early as possible, and after discovery, the concentration of 70% metribuzin can be used to dissolve 1000 times solution or concentration of 50% chlorothalonil 800 times solution for spraying. For the prevention and control of creeping cut disease is mainly the concentration of 70% of the methylbutazin 300 times solution or with a concentration of 10% of the Sekol 3000 times solution for root irrigation drip.

The main insect pests of black beauty watermelon are: aphids, leaf miner flies, tigers, mole crickets and other pests. In the prevention and control work can be used Bardan 1000 times solution, Kungfu 1500 times solution, Kulon 1000 times solution for alternate spraying to achieve the best effect, in the prevention and control work is prohibited to use the country has banned the use of high toxicity, high pesticide residue pesticides, such as furadan. In the late stage of plant fruiting, poisonous bait can be utilized to trap rats.

7, watermelon planting of timely harvest

In the black beauty of the picking work, pay attention to the observation of the surface of the watermelon, in the hairless, smooth, you can carry out the work of the picking, remember not to pick early, early picking will affect the quality of the black beauty of the watermelon, thus causing economic losses.