在水稻生产上自采用塑料薄膜保温育苗以后,大大提前了水稀的播种期,延长了生育期,这对充分利用太阳光能和当地有效积温,夺取水稻高产稳产起了很大作用。但铁岭地区处于我省的北部,气候冷凉,早春气温上升慢,早秋气温下降快,水稻生产仍觉 In the rice production since the plastic film insulation seedlings, greatly advance the water-thin sowing period, extending the growth period, which make full use of solar energy and local effective accumulated temperature, to seize the high yield of rice has played a significant role. However, the Tieling region is located in the northern part of our province with a cool climate. The temperature in early spring increased slowly, and the temperature in early autumn decreased rapidly. Rice production still felt