北方寒地水稻苗床增温超早育苗高产机理研究

High Yield Mechanism Study of Temperature-increasing Technique on Rice Seedling Bed and Super-early Seeding Nurturing in Cold Area

通过2006-2008年3年试验结果表明：苗床隔离层增温技术与三膜覆盖技术相结合可以大幅度提高苗床地温，平均比常规高6．62℃。利用两项苗床增温技术实现了寒地水稻超早育苗、育壮苗目的，从而可以种植生育期较长的品种以获得更高的产量。垦稻14和龙粳18平均比空育131常规育苗增产9．45％，比空育131增温育苗增产7．3％。

After three years experiment from 2006 to 2008, the result indicated that：The seedbed insulating layer warming technology unifies with three membrane cover technology could enhance the seedbed ground temperature largely, higher than the control 6.62℃ average,realized the goal of cold paddy rice super-early breeding and the strong sprout by using the two seedbed warming technologies. Thus, could plant variety of long period duration to obtain higher output. Kendao 14 and Longjing 18 production increased 9.45% average compared to Kongyu 131 ,increased 7.3% compared to Kognyu 131 war-ming grow seedlings production.