irrigation water requirement造句

• Irrigation quota can be calculated by irrigation water requirement per time and irrigation times
  灌溉定额由灌水定额及灌水次数决定。
• Planning , design and installation of irrigation schemes - guide to irrigation water requirements
  灌溉系统的规划设计和安装.水灌溉要求指南
• Irrigation water requirement per time = ( soil water irrigation maximum - soil water irrigation minimum ) ? scheming wetted soil layer depth . irrigation cycle and irrigation times were decided by soil water irrigation maximum , minimum and consumption velocity
  灌水周期和灌水次数由灌溉饱和点与补偿点及土壤水分消耗速率决定，表现为强耗水期灌水周期短，灌水次数多，其后依次按中、弱、微耗水期灌水周期增长，灌水次数减少。