1. Emphasis on land selection and basal fertilizer application
1.1 Watermelon Growth Habits: Warm, light, dry air and moderate rain conditions, so the watermelon should be planted in a warm climate, good sunlight, long sunshine, moderate rainfall, low air humidity, low groundwater level, and good irrigation conditions. The soil is rich in organic matter, with a large temperature difference between day and night, and the soil is sandy or loamy.
1.2 When planting, use 5-6 years of rotation, for example, with rice rotation, you can overcome continuous cropping obstacles, ensure that you sit more and more melons and sit firmly.
1.3 When fertilizing watermelon, the use of base fertilizers to decompose farmyard manure can greatly increase the rate of sat collection, yield and sugar content.
1.4 before the watermelon ploughing and soil preparation, the medium fertility land applies 2500-3000kg of cow manure per 667m2, cake fertilizer 100kg, calcium magnesium phosphate fertilizer 40-50kg, borax 1.5-2kg.
1.5 After turning 1-2 times, turn it into a suitable file or ridge.
2. Proper planting and regulation of plant growth
2.1 watermelon cultivation density: according to fertility, fertilization types and how much, watermelon varieties, cultivation methods and cultivation time and other flexible determination
2.2 Stands introduced by vines: 1300-1200 strains per 667m2 for early maturing varieties and 1000-1200 strains for 667m2 mid-late maturing varieties
2.3 Cultivated cultivation in open field: 800-900 strains per 667 m2 of early maturing varieties and 600-700 strains per 667 m2 of medium-late maturing varieties.
2.4 vine pruning: According to the growth of watermelon plants, female vines before and after the stem section of the child vines to be cut off, can effectively improve the rate of sitting.
3. Artificial pollination
3.1 Artificial pollination can greatly increase the pollination rate and the rate of cultivating cucumbers, and increase the rate of sitting cucumbers by 20-30%.
3.2 After the opening of the male flower of watermelon, artificial pollination should be managed to improve the pollination rate.
3.3 The best time for artificial pollination: 8-11 am
3.4 A male flower can pollinate 3-5 female flowers.
4. Pharmaceutical treatment
4.1 Watermelon bud stage, female flower after flowering, and larvae fist size
Each spray 25kg 0.3% potassium dihydrogen phosphate solution per acre, improve the rate of sitting, yield and sugar, and enhance the ability to resist pests and drought.
4.2 when young walnut size
80% Naphthyl Acetate Soluble Powder 1g, dissolved with 50g of alcohol, watered 24kg with a clean brush and painted young larvae.
4.3 watermelon out of cotyledons and 2-leaf stage
Brewing vinegar 1kg + water 25kg, spraying 25kg per acre, sitting rate and yield can be increased by 15-20% and 30-35%, respectively.
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