Effect of subsurface irrigation quota on salt accumulation of soil in plastic greenhouse cultivated with tomato;

Effect of control lower limit of subsurface irrigation on phosphorus distribution in soil profiles of protected land

In order to acquire more accuracy of numerical simulation of soil water movement under subsurface irrigation with porous pipe,a two dimension soil-water movement model with boundary of third type was built in this paper.

Effect of pipe space on maize infiltration irrigation;

Numerical simulation of soil water movement under infiltration irrigation;

Under specific rainfall,irrigation quantity and initial soil conditions,the variation characteristics of soil moisture and growth characteristic of maize under three different irrigation techniques,as sprinkler irrigation,drip irrigation and infiltration irrigation,were studied through experiment.

Development and application of seeping irrigation equipment;

The research advancement on advantages and shortcomings of seeping irrigation techniques was reviewed in this paper.

Review on technical parameters of subsurface drip irrigation for soil water control;

The buried depth of porous pipe is one of the important technological parameter for subsurface drip irrigation(SDI).

Percolation irrigation is an irrigation method of a new type, which has the advantages of other irrigation method such as furrow irrigation in vegetable protected cultivation.

This task is an important part of a major technical item undertaken by Science Commission in Harbin city which centered around the applied research on the technique of percolation irrigation with zippered plastic buried pipe.