The cultivation of sweet potato!

It takes about 85-120 days from sowing to harvest, and the whole growth period is 110-145 days. It takes about 60-70 days from sowing to the opening of the first female flower. Open field cultivation has the advantages of low input cost and easy management, so it is the best choice for farmers to increase their income in a short time.

(1) sowing muskmelon is suitable for direct seeding, and seedling transplanting is needed for early maturing cultivation. Soak the seeds in warm soup with 55 degrees water for 1 minute, then lower the temperature to 25 degrees, then fish them out a little after 6 hours, and then accelerate the germination (the germination temperature is about 28 degrees). When the seeds germinate and show white, sow the seeds.

(2) the seedling can be raised with 65-hole black hole plate, and the seedling age is about 35 days (the average temperature is above 15 degrees). It can be planted in the field at the seedling age of 5-leaf stage from 3 to 3 Mel.

(3) the distance between rows and plants is 1. 7m between rows, and the distance between plants is 30-40cm. When planting, one large seedling with 3-4 true leaves in each hole, one between 2-3 true leaves and 4-5 true leaves in direct seeding, the melon seedlings can be located in the middle of the border or on one side of the border to attract the growth of melon vines.

(4) the fruit of muskmelon is mainly born on the vine of son and grandson, so it is necessary to pick the heart, trim the vine and promote the fruit. Generally use six-vine type: when melon vine 5-6 leaves, leave 4 leaves to pick the heart, leave 2 sub-vines, and then leave 3 sun vines for each sub-vine.

(5) laying grass and turning melon fruits touch the ground and are vulnerable to Huangshou melon larvae. As a result, the quality or yield is reduced, so the grass is spread under the vine. When the melon grows to half the size, turning the melon at the right time will also help to avoid insect pests, and can make the color and flavor of the melon consistent.

(6) attention should be paid to the use of phosphorus and potassium fertilizer when forcing fertilizer, irrigation and topdressing. After coring, 500kg and 50-100kg per mu of dried human manure and cake fertilizer are applied in the outer 10cm, and then plant ash 100-200kg is applied after soil cover, so as to promote the occurrence of son vine and sun vine and the initial development of fruit. After each melon harvest, 200-300kg dilute manure and superphosphate 5kg were applied per mu to ensure fruit growth and development. Muskmelon also has strict requirements for water, mainly in the seedling stage, squatting seedlings properly; the combination of promotion and control in the early flowering and fruit setting stage to prevent overgrowth and melons; and irrigation should be strengthened in the middle and later stage to meet the needs of high temperature and exuberant growth of melons and seedlings.

When melons are ripe, stop watering and improve their quality.