In order to study the effects of different irrigation methods on physical and chemical properties of soil in greenhouse, physical and chemical properties of the soil under four irrigation methods of border irrigation, micro sprinkling belt, border irrigation on film and micro sprinkling under film in solar greenhouse were compared and analyzed. The results showed that after planting a crop of rape, soil bulk density and pH value of different irrigation methods increased to different degrees compared with those before planting, and the variation range of four treatments were as follows: border irrigation > micro sprinkling belt > border irrigation on film > micro sprinkling under film. Soil bulk density and pH value were the lowest under micro sprinkling under film treatment, and significantly lower than those treatments of border irrigation and micro sprinkling belt. On the contrary, the EC value and the contents of N, P and K in each soil layer from 0 to 30 cm all decreased to different degrees, and the variation ranges of four treatments were all shown as micro sprinkling under film > border irrigation on film > micro sprinkling belt > border irrigation. The results showed that micro sprinkling under film had the best effect on improving physical and chemical properties of soil. |