壮苗是寒地水稻优质、高产的基础和保证。就地下部分而言,3.5叶移栽期的水稻秧苗应有根系14条,但在实际育秧中,受温度、水分、播量等多因素影响,一般只能育出8、9条根,与现行的壮苗标准有很大差距。这既是当前水稻育秧存在的客观问题,也是进一步提高水稻产量的空间所在。2009年,经试验,水稻苗床增温剂多家表现出增温、促根、增产作用。2010年水稻增温剂、分蘖促进剂试验表现良好。因此制定2011年水稻苗床增温剂效应示范试验。1材料与方法1.1供试品种垦鉴稻6号,主茎叶11片叶。1.2试验设计采用大区对比法,不设重复。从大棚一端横向截取面 Strong seedling is the foundation and guarantee of high quality and high yield of rice in the cold area. In terms of underground parts, 3.5 leaf transplanting rice seedlings should have 14 root systems, but in actual nursery, temperature, moisture, sowing and other factors, generally only 8,9 root breeding, and The current strong standard seedlings there is a big gap. This is not only an objective problem of rice seedling cultivation but also a space for further increasing rice yield. In 2009, after the experiment, many rice seedling warming agents showed warming, promoting root and increasing yield. 2010 rice warming agent, tillering accelerator test performed well. Therefore, the formulation of 2011 rice seedling warming effect demonstration test. 1 Materials and methods 1.1 test varieties Ken rice 6, the main leaf 11 leaves. 1.2 Experimental design using the regional contrast method, no duplication. Transverse cross-section from one end of the greenhouse