为探讨生物增温技术在水稻抗低温育苗中的应用效果，以‘空育131’为供试水稻品种，通过田间小区实验（苗床和水田2个部分），研究了酿热物基础上施用不同剂量生物增温剂（一种微生物发酵复合菌群）对水稻苗床温度、秧苗素质以及栽后水稻的生育期和产量性状的影响。结果表明，较酿热物育苗相比，增施生物增温剂后可显著提高苗床温度，改善秧苗素质，促进水稻早熟，达到增产、增收的目的，其中以中等剂量（2.5 kg/100 m2）生物增温剂处理效果最好：增产8.8%，增收2110元/hm2。

In cold regions like Heilongjiang province of China, low temperature is generally a limit to the growth of rice seedling. This paper reports the effects of the biochemical calefacien (a kind of microbial community) application combined with rice straw on rice seedbed temperature, seedling quality, rice growing seasons and yield characteristics after transplanting in such a region. The conducted field experiments included two parts of the seedbed and the paddy field. Four treatments, i.e., 0, 1.25, 2.5 and 5.0 kg/100 m2 application rates of the biochemical calefacien, were designed with three replicates. The results show that the application of the biochemical calefacient can significantly elevate the temperature of the rice seedbed, improve the seedling quality, promote the rice maturity and increase the rice yield and profit. The best application rate is 5.0 kg/100 m2 with the greatest increases of 8.8% for yield and of 2110 yuan/hm2 for profit.