Field Experimental Study And Numerical Simulation On Transport Of Water And Nitrogen Under Drip Irrigation In The Greenhouse

Experiments were made under drip-irrigation in the greenhouse. Dynamic regulation of transportation of water and were researched. Numerical simulating of the regulation was made. The mathematics model of water movement and the experience model of water absorbing were constructed for tomato, basing on the study on the characteristic of its root distribution. Movement of soil water was simulated, and the front of nitrogen was forecasted, using the piston flow model. The high efficiency water saving irrigation regime and optimal fertilizer model were presented, on the field experiment of three times study on the drip irrigation schedule and twice fertilizer experiment.