How to Fertilize Open Field Watermelons
Are you curious about how to fertilize open field watermelons and the detailed methods of green plant maintenance for fertilizing open field watermelons? Here are the specific contents:
Fertilizing should start before planting open field watermelons, with a base fertilizer being essential to increase soil fertility, and seed fertilizer can provide sufficient nutrients. Top dressing after transplanting is done according to the growth stage, with seedling stage fertilization promoting the differentiation of flower buds. Fertilize again when the vines are spreading to promptly supplement the nutrients needed for growth. Fertilizing when watermelons are young fruits can promote fruit enlargement. Let's take a detailed look at the base fertilizer, seed fertilizer, and top dressing, among other aspects.
I. Base Fertilizer
Adequate base fertilizer can increase soil fertility and also reduce the occurrence of anthracnose. Apply 3000-5000 kg of soil mixture or 2000-3500 kg of manure and other decomposed farmyard manure per mu of land. Add 100-150 kg of cake fertilizer, 40-60 kg of superphosphate, 15-25 kg of calcium sulfate, or 30-40 kg of compound fertilizer. Plow the land and mix the soil and fertilizer evenly before planting.
II. Seed Fertilizer
Watermelon seedlings can use nutrient-rich soil, preferably weathered paddy soil, sieved fine, mixed with decomposed livestock manure residue, also sieved, in a ratio of 6:4. Mix in 0.2% granular compound fertilizer, and mix the three evenly before sowing.
III. Top Dressing
1. Seedling Boost Fertilizer
Watermelon seedlings with 5 true leaves can be top-dressed, applying about 10 kg of ternary compound fertilizer per mu of melon field. This can promote plant growth and accumulate the nutrients needed for later stages.
2. Vine Stretching Fertilizer
When the main vines and supporting vines appear, apply top dressing. Dig a trench about 40 cm long, 10 cm wide, and 10 cm deep between the melon seedlings, and apply 100 grams of decomposed cake fertilizer or farmyard manure per plant.
3. Fruit Setting Fertilizer
About one week after the watermelons bloom and when the fruits are about the size of an egg, apply top dressing. Dig a trench 30-40 cm away from the watermelon plant roots, and apply 7.5-10 kg of compound fertilizer and 5-7.5 kg of potassium sulfate per mu of melon field. Combine fertilizing with watering each time.
The detailed introduction shared above on how to fertilize open field watermelons and the methods of fertilizing open field watermelons, have you understood it now?