Cultivation techniques of watermelon

The cultivation of watermelon includes land selection, soil preparation and fertilization, planting, pruning and pressing vine, setting melon, topdressing, irrigation and harvest. Among them, the planting should be determined according to the variety, such as 20-25 days of seedling age of medium-maturing watermelon and 7-10 days of late-maturing watermelon.

Field management of growing watermelons:

I. Intermediate tillage

Mid-tillage begins after sowing or planting seedlings, and the combination of inter-seedlings, loosening soil and soil cultivation is carried out for 2-3 times.

Second, irrigation

Watermelon is a drought-tolerant crop, drought-resistant and waterlogging-resistant, but it is not that it does not need irrigation, but it should be irrigated timely and appropriately. However, irrigation should be carried out according to different periods, such as:

1. Promoting water: when the watermelon enters the rosette stage, it is watered with the first topdressing, the amount of water is moderate, only the sowing bed is irrigated, the purpose is to promote the seedling growth, expand the leaf area, and then plough to preserve soil moisture and promote root growth.

two。 Watermelon water: the watermelon fruit enters the peak period of fruit expansion after depilation, and the water demand increases, when the temperature rises and the evaporation increases. in order to promote fruit expansion and prevent superfluous seedlings, the watermelon should be irrigated with the second fertilizer, and the amount of water should be properly increased and watered thoroughly, then watered according to the soil quality and rainfall, from depilation to setting several times of expanded melon water, and achieve a balanced water supply to prevent fruit cracking.

3. Topdressing

The basic principles of topdressing melon fields are as follows: light application of seedling fertilizer, first promotion and then control, skillful application of vine fertilizer, re-application of expanded melon fertilizer after sitting young fruit, and the use of different fertilizers in different periods, such as:

1. Fertilizer for promoting seedlings: fertilizer for promoting seedlings should be applied within one week after transplanting, applying 8-12 grams of urea or 15-20 grams of ammonium sulfate per plant, and covering soil after ditching.

two。 Trailing fertilizer: before and after vine extension, when melon seedlings grow to 40-60 cm, urea 10-15 kg, calcium superphosphate 5-10 kg, potassium sulfate 10-15 kg per mu, trench 25-30 cm away from melon root or between two plants, ditch depth 10-15 cm, covering soil and watering after application to promote fertilizer absorption

3. Expanded melon fertilizer: the expansion period is the period when watermelon needs the largest amount of fertilizer in its lifetime. In a circle 30-45 cm from the root base, 45% ternary compound fertilizer 8-10 kg per mu, urea 4-6 kg and potassium sulfate 3-5 kg per mu were dissolved and then mixed with water; foliar fertilizer was sprayed in the later stage, 0.4% potassium dihydrogen phosphate solution was sprayed every 7-10 days for a total of 2-3 times.

Field management is an important part of watermelon planting. Melon farmers must pay attention to it, which is related to the yield and quality of watermelon fields.