Abstract:

Middle-mature japonica rice is mainly planted in Lianyungang areas in jiangsu province. The paper mainly studied and analyzed rice ecological environment, rainfall, soil salt content, soil nutrients and heavy metal pollution based on weather and soil materials, the results were as follows. (1) Moisture factor for rice growth is little affected. (2) Parts of the non-plough layer, to the detriment of the high salinity rice growth and development. (3) Single pollution indexes of arsenic(As), plumbum (Pb), cadmium(Cd), chromium mercury and Cu were below 1, pollution share rate was arranged as follows: As (36.07%) >Pb (27.89%) >chromium (14.54%) >Cd (10.39%) >mercury (8.52%) >Cu (2.59%) and As & Pb were the two major pollution resources. Based on the Factors, The area of rice can be further into four sub zone in order to perfect rice regionalization and afford reference to coastal and some similar areas.