How to Warm Up Your Greenhouse: A Step-by-Step Guide
Warming up a greenhouse using a temperature-raising agent can be an effective and eco-friendly method to prepare your soil for planting. Here's a detailed guide on how to do it properly:
1. **Preparation**:
- **Site Preparation**: Clear the area of any debris, weeds, or obstructions. Ensure the ground is level and well-drained.
- **Fertilizer Application**: Apply 60–70% of the total compound and chemical fertilizer 15–20 days before planting. This allows the nutrients to settle and integrate into the soil.
- **Ridge and Trench Dimensions**: For a single-row setup, create ridges that are 80–100 cm wide, with trenches 40–60 cm wide and 20–30 cm deep. For double-row setups, make ridges 130–150 cm wide with similar trench dimensions.
2. **Temperature-Raising Agent Dosage**:
- Use approximately 4 kg of warming agent per acre. For a typical greenhouse measuring 50 meters by 8 meters, 3 kg should suffice.
- You can calculate based on area or straw volume—use 1 kg of warming agent per 1 kg of straw.
3. **Straw and Manure Application**:
- Add 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**:
- Begin this process 15–20 days before planting to allow enough time for the materials to decompose and generate heat.
5. **Bacterial Inoculation Method**:
- Mix 1 kg of microbial starter with 10 kg of wheat bran or rice bran, then add 6–8 kg of water. The mixture should be moist but not soggy—when squeezed, it should hold a few drops of water without dripping. Let it ferment for 12–24 hours at 15–25°C.
6. **Single-Row Operation**:
- Dig a trench 40–60 cm wide and 20–30 cm deep. Fill it with straw to a thickness of about 40 cm, then compact it to at least 30 cm. Leave 10–15 cm of straw exposed at both ends for ventilation.
- Spread the fermented bacterial mix evenly over the straw, mix it in thoroughly, and ensure even distribution. You can also use a layered approach: alternate layers of straw and manure mixed with bacteria.
- Cover the straw with 15–20 cm of soil, forming a raised ridge. Create a small path between the ridges for easy access. After 2–3 days of drying, reorganize the ridge. Plant seedlings after 15–20 days.
7. **Double-Row Operation**:
- Create ridges 130–150 cm wide with 60–80 cm gaps between them. Dig trenches 20–30 cm deep.
- Fill the trenches with straw and form raised beds 60–80 cm wide and 15–20 cm high. Plant vegetables on these raised beds.
8. **Covering and Watering**:
- Once the materials are in place, cover the entire area with straw, ensuring no part is left exposed. Keep the straw 10–15 cm above the surface for proper airflow.
- Water the straw 10–15 days before planting to keep it moist and promote decomposition.
9. **Ventilation After Planting**:
- Once the plants are in, punch holes through the plastic covering using a 3 cm tip or steel drill. Space the holes 10–15 cm apart and drill diagonally into the straw layer to allow for good air circulation and CO₂ release.
By following these steps, you can effectively warm your greenhouse using natural methods, creating an ideal environment for healthy plant growth.
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