盐碱地改良方法

To improve saline-alkali soil, several methods can be employed:

1. **Leaching**: This involves flushing the soil with large amounts of water to remove excess salts. However, this method can be water-intensive and may not be suitable for all regions.

2. **Adding organic matter**: Incorporating organic materials such as compost, manure, or crop residues can help improve soil structure and fertility, as well as reduce salinity levels.

3. **Gypsum application**: Gypsum can help improve soil structure, increase water infiltration, and reduce sodium levels in the soil.

4. **Growing salt-tolerant plants**: Planting crops or species that are tolerant to high salinity levels can help improve soil conditions over time.

5. **Subsoiling**: Breaking up compacted soil layers through subsoiling can improve water infiltration and root penetration, leading to better soil conditions.

6. **Balanced fertilization**: Applying balanced fertilizers can help provide essential nutrients to plants while also reducing the impact of high salinity levels.

These methods can be used individually or in combination to effectively improve saline-alkali soil conditions.

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