What are the high-yield cultivation techniques of watermelon in the open field? What are the precautions?

Generally speaking, the planting method of watermelon in the open field is to select suitable seeds and sowing dates, and pay attention to the treatment before and after sowing. Finally, it is worth noting that watermelon seedlings are transplanted and fertilized. Let's talk about specific methods.

List:

1: Seed selection and sowing date: Watermelon varieties are divided into early maturity, middle maturity and late maturity. We should calculate the watermelon varieties we need according to our own planting needs, and know whether these different varieties of watermelon have good stress resistance, insect resistance, sugar content, storage and transportation resistance and so on. These are still more important. In addition, the sowing time should also be different: if you choose watermelon planted in spring, you can only plant it or sow it directly when the ground temperature is stable above 15 degrees. Watermelons planted in the open field generally begin to be raised in the middle and late March, and it takes about 30 days to plant in the middle and late April, and it usually takes about 60 days to reach the market standard. Late ripening watermelon is also called autumn watermelon. Generally, we choose to sow during the summer solstice solar term to the midsummer solar term, and harvest before and after the Mid-Autumn Festival. Therefore, when we plant watermelons, we should choose the time to plant watermelons according to the time when watermelons are ready to go on the market.

2. Sowing and pre-sowing treatment: the watermelon seeds are exposed to the sun for one day before seedling raising, then soaked in warm water for about one hour, and the mucus on the surface is rubbed by hand and taken out after rubbing. Immediately soak in 0. 1% potassium permanganate aqueous solution for 10 hour, then wash it and put it in a suitable place to accelerate germination. Fertilize the land where watermelon is planted in advance, and pay attention to the density of watermelon seedlings when planting watermelon.

3. Fertilization for transplanting watermelon seedlings: Generally, the age of Xin Wei of watermelon is about 30 days, and it can be transplanted with three leaves and one heart. Before transplanting, 0.2% potassium dihydrogen phosphate and 0.2% urea can be sprayed on the leaves. In order to improve the quality and high yield of watermelon, high-quality farmyard manure and other fertilizers can be used to increase the yield of watermelon.