全部

1·It is one of hotspots in soil erosion researching that how soil erosion affects soil productivity.

土壤侵蚀对土壤生产力的影响是当前水土保持领域界的研究热点。

2·In the red soil region, irrational land use has resulted in serious water and soil erosion and a decrease in soil productivity.

红壤地区长期以来，由于不合理的土地利用，导致了严重的水土流失，土壤生产力下降。

3·The serious soil erosion of the Loess Plateau has led to not only the reduction of soil productivity but also the soil degeneration.

黄土高原土壤侵蚀极其严重，这不仅导致了土壤生产力的降低，同时也导致了土壤的退化。

4·Through the classic year's analysis, it is proved that the soil nutrient situation be the main factor for effecting on soil productivity of hillside fields.

通过典型年样本分析，证明土壤养分状况是影响坡耕地生产能力的主要因素；

5·The input of NPK as either organic manures or chemical fertilizers not only greatly improved soil productivity but also was of benefit to the soil as a carbon sink.

试验结果表明：以有机肥或以化肥形式配合施用NPK不但可以极大提高土壤生产力，而且有益于增加土壤有机碳储量。

6·An understanding of the nature of these characteristics is an essential prerequisite to the study of soil profiles, soil types, soil productivity, and soil management.

了解这些特性是对土壤剖面、土壤类型、土壤生产力和土壤管理进行研究的一个必要的先决条件。

7·In the total rate, the contribution of variety change, cultural improvement, the application of fertilizer, and soil productivity was 54%, 36%, 15%, and 27% respectively.

其中，品种更换、栽培技术改进、施肥水平与地力变化和三因子综合作用对产量增长的贡献分别占54％、36％、15％和27％。

8·Site level in Hexi-corridor area was divided into 4 types by comprehensive analyzing the growing stock of stand and soil productivity of all kinds of farmland shelterbelt.

通过对各土类农田防护林林分蓄积生长量和土壤生产力的综合分析，把河西走廊立地级划分为四类。

9·As the main reason for the worse water quality, agricultural non-point pollution, which also causes soil productivity to degenerate directly, is tightly related with the hydrological process.

农业非点源污染是水系或水体水质恶化的最主要原因，同时也是土地生产力退化的直接动因，农业非点源污染又往往与流域水文过程具有不可分割的关系。

10·Soil productivity is strongly linked to SOC because SOC plays important roles in improving soil structure, soil water holding, infiltrating and capacities, and the nutrients supply to plants.

SOC在改善土壤结构、保持水分、防止土壤侵蚀和退化、提供植物养分特别是氮素等方面具有重要作用。