Plastic mulching effects on potato under drip irrigation and furrow irrigation

Based on field experiment, this paper gives a brief in tr oduction of the mulching effects on soil water distribution and depletion under drip irrigation, the growth of potato under drip irrigation and furrow irrigatio n, etc. The results show that the plastic mulch can reduce the evaporation throu gh soil surface and maintain relatively high soil moisture in the topsoil during the early growing period of potato. However,transpiration has become the main w ay of soil water depletion during the later period and makes the mulching effect on the reduction of evaporation insignificant. When the temperature is high, th e plastic mulch can restrain the growth of potato.