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Using the Goldbeet starter to warm up a greenhouse is an effective method for improving soil temperature and promoting early planting. Here's a detailed guide on how to do it properly:
1. **Preparation**:
- **Site Preparation**: Clear the area, ensuring it is level, deep, and flat.
- **Fertilizer Application**: Apply 60–70% of the compound and chemical fertilizer 15–20 days before planting.
- **Trench and Ridge Dimensions**: For single-row operation, create ridges 80–100 cm wide, with trenches 40–60 cm wide and 20–30 cm deep. For double-row operation, use ridges 130–150 cm wide, with similar trench dimensions.
2. **Amount of Warming Agent**:
- Use about 4 kg of Goldbeet warming agent per acre. In a typical 50m x 8m greenhouse, 3 kg is sufficient.
- The calculation can be based on the greenhouse area or the volume of straw used—each kilogram of straw should be paired with one kilogram of the warming agent.
3. **Straw and Manure Dosage**:
- Use 3,000–5,000 kg of straw (such as corn stalks) per acre.
- Mix in 3–6 cubic meters of manure from herbivorous animals like cattle, horses, or sheep.
4. **Timing**:
- Perform this process 15–20 days before planting to allow proper fermentation.
5. **Bacterial Operation Method**:
- Mix 1 kg of Goldbeet seed strain with 10 kg of wheat bran or rice bran, then add 6–8 kg of water.
- The mixture should feel moist but not dripping when squeezed. Let it sit at 15–25°C for 12–24 hours before use.
6. **Single-Row Operation Method**:
- Create a ridge 80–100 cm wide, with a 40–60 cm wide and 20–30 cm deep trench.
- Fill the trench with straw to a thickness of about 40 cm, compacting it to at least 30 cm. Leave 10–15 cm of straw exposed at both ends for ventilation.
- Mix the fermented bacterial agent evenly into the straw layer, then press and vibrate the material to ensure even distribution.
- You can also use a layered method: alternate layers of straw and diluted manure mixed with bacteria. After placing the bacteria, spread the mixture evenly over the straw.
- Cover the straw with 15–20 cm of soil and form a small raised ridge. Keep the walkway slightly higher for easy access and watering.
- Dry the straw for 2–3 days after filling, then reorganize the ridge. Plant seedlings 15–20 days later.
7. **Double-Row Operation Method**:
- Create two rows, each 130–150 cm wide, with 60–80 cm between them.
- Dig trenches 20–30 cm deep and fill them with straw. Form a 60–80 cm wide and 15–20 cm high mound for planting.
8. **Covering and Watering**:
- After filling the trenches, cover the entire area with straw, ensuring no part is exposed. Leave 10–15 cm of straw above the surface for ventilation.
- Water the straw 10–15 days before planting to keep it moist.
9. **Ventilation After Planting**:
- Once the plants are in place, make holes in the plastic covering using a 3 cm tip or steel drill. Space the holes 10–15 cm apart and drill diagonally through the straw layer to improve airflow and release carbon dioxide.
This method helps maintain a warm and healthy environment for early crop growth, making it ideal for greenhouse farming in cooler seasons.
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