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प्रश्न
Mention two ways by which Soil can get nitrogen.
एक पंक्ति में उत्तर
उत्तर
Fertilizers and mixed farming.
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संबंधित प्रश्न
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Complete the following table with reference to the soil.
| Action | Effect | Result (w.r.t. fertility) |
| Construction of embankments | ||
| Wind speed decreased | ||
| Farmland is kept fallow for some period | ||
| Humus content increased. | ||
| Trenches are dug across a slope | ||
| Litter is burnt on the farm. | ||
| Proves favorable for micro-organisms | ||
| The salt content in the soil increases | ||
| Chemical fertilizers used excessively |
