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正在大规模农垦中的秦王川为一较强风蚀区,旱地改水地过程中完全清除了砂砾覆盖层的新垦区土壤抗蚀能力极差,土壤侵蚀机理与强度发生了本质性变化,人类不合理的灌溉耕作过程是土壤侵蚀的主要因素。砂田改造中土壤养分损失较大,而年复一年的风蚀过程将导致土壤养分难以估量的损失。清砂后盐分富集层相应上移,盐分的淋溶将影响地下水质。
Qin Wangchuan being a large-scale land reclamation is a strong wind erosion area. The soil erosion resistance of the newly reclaimed land completely cleared of dry gravel land during the process of dry land rebuilding has essentially changed the soil erosion mechanism and intensity. Humans Reasonable irrigation and tillage processes are the main factors of soil erosion. The loss of soil nutrients in the reformation of the sand field is large, and the wind erosion process year after year will cause the loss of soil nutrients in an inestimable amount. After the sand-clearing, the salt-rich layer will be moved upward, and the leaching of salt will affect the quality of underground water.