3. adjusting the environment exist 2 ways to adjust the level of the surface soil by means ground surface leveling is to tilt so that the water flows into a canal to drain the catchment and draining away. Grooved lifting crops for crops or Woody gives a high yield. The perennial crops Groove or wood effect. Regardless of the occurrence of flooding in the area. If there is a high risk, it should not be done, or they may raise the Groove of this type of plants grown as crops fail to rise or vegetable.
การแปล กรุณารอสักครู่..
