土壤养分流失是农田非点源污染的主要形式。
Soil nutrients loss is the main way of non point pollution from farmland.
土壤剖面中a层的流失是土壤养分流失的标志。
A layer loss in soil profile is a sign of soil nutrient loss.
土壤养分流失量与雨强及泥沙流失量呈正相关关系。
The amount of lost nutrients were correlated positively with rainfall intensities and lost sediment.
坡度是影响坡面水土流失和土壤养分流失过程的重要因素。
Slope gradient has many impacts on soil erosion by water and mineral nitrogen loss in an erosion process.
林地被人为开垦破坏后，加速侵蚀是导致坡面土壤养分流失的根本原因。
Man made accelerated erosion is a key reason for soil nutrient loss after forestlands were disturbed by human being.
耕作对喀斯特脆弱生态系统土壤具有重要影响，是造成土壤养分流失、退化的主要原因。
Tillage practice had important effect on soil nutrients loss and soil degradation in the fragile karst ecosystem.
土壤养分流失在开垦初期非常迅速，开垦耕种5 a后，土壤养分含量可减少5 0 %。
Soil nutrients abruptly loss in the beginning stage of forest removal. After five years of forest removal, soil nutrient content reduces by 50%.
因此，该地区要注意建设和恢复草、灌植被，使之尽快起到水土保持作用，近而减少土壤养分流失。
So the grass, and arbor vegetation should be rehabilitated and developed quickly in order to decrease soil erosion in Hilly-gully region of Loess Plateau, and then decrease soil nutrients loss.
坡面土壤养分流失的空间分布与坡面侵蚀方式和侵蚀强度的空间分布相一致，浅沟沟槽是坡面土壤养分流失最严重的部位。
Sloping spatial distribution of soil nutrient loss responds to spatial distribution of soil erosion patterns erosion intensity. Shallow gully ditch is the severest position of soil nutrient loss.
坡地土壤养分流失过程实际上是表层土壤养分与降雨、径流相互作用的过程，土壤养分流失的多少主要受相互作用的限制。
The process of soil nitrogen loss in runoff and sediment is restricted by interaction of soil nutrient with rainfall and runoff.
研究了次降雨过程中红壤小流域5种不同土地利用方式土壤N，P养分流失特征。
The characteristics of nitrogen(N) and phosphorus(P) loss under 5 land use patterns were studied in Sunjia small red soil watershed during the Course of rain.
为研究坡地物质迁移的重要过程，通过室内人工降雨模拟试验，研究不同透水状况坡地土壤侵蚀和养分流失的过程与机制。
To study mass transport from slope land, the process and mechanism of soil erosion and nutrient loss on the slope land under different drainage conditions were investigated by simulating rainfall.
结果表明：与裸地相比，不同椬被恢复模式均对矸石山坡面土壤侵蚀和养分流失具有明显控制效果；
The results showed that compared with the bare land, all restoration patterns played positive effect in the control of soil erosion and nutrient loss in the gangue pile land.
水平沟能够显著地拦蓄径流，减少土壤冲刷和养分流失，提高土壤水分利用率，进而提高作物单产。
Leves trench tillage can retain runoff, decrease soil wash and nutrient loss, increase utilization rate of soil water, and further increase crops yield.
在总结坡面土壤侵蚀养分流失规律基础上，建立了坡面侵蚀养分流失方程。
This article summaries the regular of slope soil nutrient loss, establish the equation of slope soil nutrient loss.
AGNPS模型是美国研制的、专用于模拟小流域土壤侵蚀、养分流失和预测评价农业非点源污染状况的计算机模型。
AGNPS (agricultural non point source) model is a computer model specialized for predicting and evaluating the agricultural non point source pollution of a watershed.
结果表明，土壤侵蚀造成表层耕作土壤的物理性能下降、养分流失和水分入渗能力降低。
The results show that the soil erosion on slope not only bring about soil nutrients lost, but also cause the soil physical property damaged, soil infiltration capability weakened.
结果表明，土壤侵蚀造成表层耕作土壤的物理性能下降、养分流失和水分入渗能力降低。
The results show that the soil erosion on slope not only bring about soil nutrients lost, but also cause the soil physical property damaged, soil infiltration capability weakened.
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