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| 21. | The effect of yield and grain protein content with soil water content and nitrogen (or nitrogen and P2O5 |
| 用极差变换将产量和蛋白质含量理论值标准化，其标准值曲线的交点即为二者的最佳结合点。 |
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| 22. | land retired from crop cultivation and planted with soil-building crops; government subsidies are paid |
| 退耕出来的土地；政府付给退耕农民的津贴。 |
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| 23. | To soil with mud. |
| 沾上污泥 |
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| 24. | He was endowed with rich soil and plenty rainfall |
| 这片平原土地肥沃，雨量充足。 |
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| 25. | Dosage：5 g/ m2, irectly broadcast sowing or broadcast sowing with soil, irrigate enough water after sowing |
| 使用量：5克/方米，直接撒播或拌土撒播，撒后浇足够的水以提高放效。 |
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| 26. | This has created a situation in which water removed from the city never comes into contact with soil |
| 这就造成了这样一种状况：从城市流过的水再也接触不了土壤和植物了。 |
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| 27. | (usually plural) a rolling treeless highland with little soil. |
| 土壤贫瘠的起伏的树木稀少的高地。 |
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| 28. | soil with good tilth |
| 有良好耕性的土壤 |
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| 29. | The change of this DOC concentration with soil depth was greater under the natural secondary forest or |
| 这些DOC浓度与土壤湿度及凋落物层碳贮量正相关显著。 |
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| 30. | The actual returns from fertilizer on a particular farm vary with soil type, management system and composition |
| 一个具体农场施肥的实际效益随着土壤类型，耕作制度和牧草地成分而异。 |
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