寒地水稻苗床增温技术研究

Study on Temperature-Increasing Technique on Rice Seedling Bed in Cold Area

为预防水稻苗期低温冷害,将保温材料隔离层增温技术与三模覆盖技术进行结合,经2006年和2007年两年试验结果表明:利用不同保温材料在苗床30 cm下做隔离层进行水稻育秧,可以显著提高苗床地温,平均比常规高4.19℃,并且为秧苗生长创造了有利生长环境,提高了秧苗素质,水稻生育期提早2 d左右,平均增产3.2%。保温材料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6.7℃。三个保温材料处理间,稻壳隔离层两处理增温效果要好于发泡塑料隔离层。

In order to prevent rice seedlings from cold injury, the experiments were carried out to combine buffer layer temperAture-increasing technique and three-film covering technique in 2006 and 2007. The results showed that through buffer layer seedling nurturing which lays a layer 30 cm under seedling bed, the temperature on seedling bed could increase 4.19 ℃ than normal seedling nurturing method and the yield was increased by 3.2%. The combination of buffer layer and three-film could increase bed temperature greatly by 6.7 ℃ higher than normal nurturing method. The rice husk as buffer layer was better than foam plastics.