drained soil 排干的土壤
- Denitrification, on the other hand, can be very serious with a combination of no tillage and imperfectly drained soils.
硝态氮的淋失虽然在免耕制下稍高一些,但在夏季作物上,一般不是氮损失的主要途径。 - Since deep plowing of well-drained soils quickly decomposes organic matters in top soils, additional organic matters are needed.
因深翻排水良好的土壤使表层土壤中有机质迅速分解,所以必须施用有机质。 - Costa Rican soils are generally fertile and in well drained soils a yield of 40 - 45 t/ha/year (1600 - 1800 exportable boxes) can be obtained with little inputs.
哥斯达黎加土壤一般很肥沃,在排水良好的土壤上无需什么投入就可获得40~45吨/公顷/年的产量(1600~1800出口货箱)。
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