水土保持措施必须具备下列条件:(一)以防止土壤侵蚀或者说以减少侵蚀模数为核心内容,能将土壤保留在原来的田面上,直接供给发展农业生产之用。(二)以保水为重要内容,能将雨水保留在原田面 Soil and water conservation measures must meet the following conditions: (1) To prevent soil erosion or reduce erosion modulus as the core content, the soil can be retained in the original field and directly supplied to the development of agricultural production. (B) to retain water as an important element, the rain can be retained in the original field surface