Open-field watermelon planting technology and management methods Open-field watermelon cultivation technology points

The most suitable temperature for outdoor watermelon growth is 25-30 degrees Celsius. If it is a watermelon in the seedling stage, the temperature cannot be lower than 15 degrees Celsius. Therefore, it is best to choose the Grain Rain solar term when planting, because from the temperature characteristics, the temperature during Grain Rain can reach above 16 degrees Celsius, which meets the growth requirements of outdoor watermelons.

Open-air watermelon planting time

It is most suitable to plant outdoor watermelons from mid-March to early April . The temperature at this time has risen and the watermelon seeds are not easily frozen. In addition, the rainfall is relatively abundant and the air humidity is relatively suitable, which can greatly improve the germination rate and survival rate of watermelon seeds, and the seedlings during the seedling period are not easy to dry out.

Open-air watermelon planting technology

1. Choose the variety

Before planting open-field watermelons, you should carefully select varieties because they are late in the market. So don't choose early-maturing varieties with low yields. You can choose large-fruit varieties with strong resistance, high yield and high quality .

2. Site selection and land preparation

It is best to choose loose, well-ventilated land for planting open-field watermelons. Remember not to plant continuously, and crop rotation should be carried out every 5-6 years at most, otherwise it will affect its growth.

3. Planting temperature

When the surface temperature of the soil is stable at around 15℃ , it is the best time to plant watermelon seedlings. Failure to reach this temperature will have a negative impact on the watermelon.

4. Watering management

Outdoor watermelons do not need to be watered frequently during the growth period of seedlings . Wait until the soil becomes relatively dry before watering , and keep the soil slightly moist.

Management methods of open-air watermelon

1. Fertilizer and water management

Open-field watermelons have a great demand for fertilizer during the seedling stage. At this time, we can pile a layer of dead leaves on the soil surface and spray potassium dihydrogen phosphate solution on the leaves 2 to 3 times .

2. Weeding

For open-field watermelons, manual weeding must be carried out 2 to 3 times before the watermelon vines grow out of the ridges . After the watermelon vines grow out of the ridges , remember to pull out the weeds in the field in time .

3. Pruning and vine pressing

When planting open-field watermelons, remember to preserve the main and side vines, then pinch off the tips of the watermelons while leaving 10 leaves. If buds sprout on the side vines, remove them in time .

4. Select melons

A standard fruit must be determined for each open-field watermelon plant so that standard fruits can be harvested. If the fruits are not selected and determined, the commercial rate of watermelons will inevitably decrease.