When planting watermelon, how can scientific management improve the yield?

Watermelon has large volume, high yield, good appearance, good sugar content and good taste, which can make melon farmers get better yield and income. This is also the result that most melon farmers want to see. For watermelon, the main factors affecting yield and sugar content are soil, nutrients, temperature, humidity, light and harvest.

1.？ Land selection. Sandy loam with deep soil layer, loose and fertile soil and convenient irrigation and drainage should be selected. Cucumber crops will not be planted in dry land for 5 years and in paddy field for 3 years.

2.？ Determination of sowing date. When watermelon is cultivated in the open field in early spring, the ground temperature is stable at about 65438 05℃, which is generally the suitable time for sowing in the open field. According to the variety, cultivation season, cultivation method, consumption season and other conditions, determine the best sowing date. Seedlings are usually sown in mid-April and April, sown in mid-April and April, and harvested in late June. Autumn watermelon is sown in July 1 and mid-July, and harvested in late September.

3.？ Scientific fertilization. Fertilization type, fertilization ratio and fertilization amount directly affect the yield and sugar content of watermelon. Usually, the amount of nitrogen fertilizer is too much and the amount of phosphorus and potassium fertilizer is insufficient. Watermelon is relatively poor in appearance, sugar content, taste and commodity value. However, the application of decomposed farm manure, organic manure and biological bacterial manure has increased. It is reasonable to apply nitrogen fertilizer in the early stage. In the middle and late stage, phosphorus and potassium fertilizer should be applied adequately, and trace elements such as calcium, boron, magnesium and zinc should be supplemented in time. No matter in growth and development, the sugar content is good, and the taste and quality are good.

4.？ Pruning and spreading. Generally, the three-vine pruning method is adopted. When the main vine has 8-9 leaves, select the main vine and two strong side vines, and remove the remaining daughter vines and sun vines. Pruning is not suitable in rainy days to prevent the spread of diseases. When the vines grow to about 50 cm, trim and flatten them with soil, and then flatten them again every 3-4 knots. Press each vine for 2-3 times, and the melons and vines are evenly arranged.

5.？ Reasonable watering. The requirement of reasonable water distribution for watermelon is that the air is dry and the soil has a certain humidity. However, too high air humidity or too high soil water content will also affect the growth of watermelon roots and cause diseases. The requirement of reasonable water distribution for watermelon is that the air is dry and the soil has a certain humidity. It is not conducive to fruit yield and quality in the grape extension period and fruit expansion period. However, too high air humidity or too high soil water content will also affect the growth of watermelon roots and cause diseases.