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| 1. | a source of oil; used for forage and soil improvement and as food. |
| 其种子可以用来制油的原料和制作食物；其根茎可以用于制作草料和土壤改良。 |
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| 2. | improvement of soil fertility |
| 土壤培肥 |
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| 3. | Technical code for improvement of soil and foundation of existing buildings |
| 既有建筑地基基础加固技术规范 |
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| 4. | soil improvement |
| 地基处理 |
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| 5. | improvement of soil |
| 土壤改良 |
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| 6. | erect annual or biennial plant grown extensively especially for hay and soil improvement. |
| 直立的一年生或两年生植物,广泛栽培,尤其用于干草和土壤改良。 |
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| 7. | This has provided valuable data for work in soil improvement. |
| 这为土壤改良工作提供了宝贵资料。 |
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| 8. | acid soil improvement |
| 酸性土壤改良 |
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| 9. | benefit of saline-alkali soil improvement |
| 改碱效益 |
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| 10. | These include proper nutrition, especially nitrogen and phosphorus, weed control, soil structure improvement |
| 这包括适度的养分（别是氮和磷）杂草控制、壤结构改良、H值及土壤盐渍化控制、植密度、种深度、作时序以及其它因素。 |
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