fertility gradient 中文意思是什麼
fertility gradient
解釋
肥力梯度-
Absolute amounts of soil erosion is not large for the falling gradient in black soil region, but the nutrient is high in erosion soil, the nutrient of erosion soil and runoff is high, which leads to soil fertility degeneration, while n and p nutrient pour into water with surface runoff, it leads to water nutrient enrichment and pollution, and becomes one of confined factors of water nutrient enrichment
吉林農業大學碩士學位論文黑土地表徑流氮磷養分特徵及其與肥力退化的關系由於黑土耕作區坡度平緩,土壤侵蝕的絕對量並不很大,但由於土壤中攜帶的養分高,養分流失的較多,流失的養分將引起肥力的退化,而且氮磷等養分隨地表徑流流出匯入各種水體,引起水體富營養化和污染,成為水體富營養化的限制因子。 -
This can be done by applying more fertilizer on the upper slopes and less fertilizer on the lower slopes so that the fertility gradient of the soil is reduced or overshadowed
這可以通過在坡上部施用較多肥料而在坡下部施用較少的肥料來達到此目的,以便使坡地的土壤肥力上下梯度降低或完全一致。
分享友人