Drying seeds twice is the best way to improve the germination rate of watermelon seeds. Moreover, the sun-dried seeds are soaked in warm water of about 30 degrees for about 6 hours, wrapped in a towel, rubbed with a layer of seeds, soaked in 800 times diluted methyl sulfide humidified powder for 4 hours for sterilization, and finally washed with clear water.
If you want to choose a plot with soft soil and good drainage, watermelon can't be continuously cultivated. And at the same time of land consolidation, it is best to use membership fees as base fertilizer. The proportion of nitrogen, phosphorus and potassium must be consistent. Generally, the ratio of nitrogen, phosphorus and potassium in watermelon is 3.28: 1: 4.33, so we should pay attention to the selection of fertilizers suitable for growing watermelon.
Watermelon planting must be covered with plastic film, sowing first and then covered with plastic film. The specific sowing method is relatively simple, so I don't have to talk nonsense at all.
Watermelon is a light-loving crop. Should not be planted too densely or too white. The row spacing is about 1.4m, and the stump spacing is about 0.7m. If other crops are bred, the row spacing and pile spacing can be increased by about1.9m, and the pile spacing is about 0.7m..
Sow in time and plant thick cantaloupe. The key to cultivate strong seedlings is to sow in time and use hotbeds, plastic films and arched seedlings. In the middle and late stage of seedling raising, more plastic film should be exposed and covered day and night, 3-5 days before transplanting, which is helpful to expose the film all day and cultivate healthy and strong seedlings.
2. Fertilizer and water management: pay attention to the careful implementation of seed fertilizer, skillfully open vine fertilizer, and re-apply expanded melon fertilizer. Seedling fertilizer delayed the emergence of seedlings for 5-7 days after dinner, and rattan fertilizer generally opened a ditch with a depth of 25 cm on both sides of 35 cm outside the restaurant about 20 days after seedling raising, and the ditch was covered with soil. Swelling melon fertilizer is applied when oil and eggs are big and small, and the application method is carried out together with vine fertilizer.
Generally speaking, watermelon absorbs less nutrients in the early stage, more nutrients in the middle and late stage, and less nutrients in the later stage. During the whole growth period of watermelon, the absorption of potassium is the largest, followed by nitrogen and phosphorus, and the least.
The key period of nitrogen and phosphorus nutrition in watermelon is at seedling stage, the key period of potassium nutrition is at jointing stage, and the maximum efficiency period of watermelon nutrition is at fruiting stage.
When everything is ready, you'd better prepare for the transplant. It is best to do it on cloudy days or when the sun is not so strong in the afternoon. In order to improve the survival rate, each nest should be covered with a film after transplantation.
Mosquito repellent should be used to avoid eating seedlings such as soil and silkworm excrement. My home is usually White chongling, and I patrol every morning. Anyone found bitten by a mud silkworm must be arrested and put to death! Replenish seedlings in time. Water them regularly every few days. When the seedlings grow to 1.5 meters, they should be sharpened in time and more watermelons should be made.