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0引言湖南省是农业大省,是双季水稻主产区。2013年,湖南水稻机插率为16.2%,远低于2012年全国31%的平均水平。制约湖南省机插秧发展的原因较多,除扶持性政策较少、经济水平较低等因素外,配套育秧跟不上、集中育秧条件受限是关键。根据DB43/T742.2—201 3《水稻育插秧机械化技术规范第2部分:插秧》中插秧机对秧苗的要求,机插应使用规格化培育的毯状带土秧苗。秧块表层土壤湿度以手指下压稍微起窝为宜。DB43/T742.1—2013《水稻育插秧机械化技术规范第1部分:育秧》中壮秧指标
0 Introduction Hunan Province is a major agricultural province, is the main producing area of double rice. In 2013, Hunan rice machine plugging rate was 16.2%, much lower than the national average of 31% in 2012. There are many reasons restricting the development of machine-transplanted rice seedlings in Hunan Province. With the exception of fewer supportive policies and lower economic level, the matching of transplanted seedlings can not keep up and the limited conditions of centralized seedling cultivation are the key issues. According to DB43 / T742.2-201 3 “Rice Transplanting Mechanized Technical Specifications Part 2: Transplanting” in the transplanter seedling requirements, the machine should be used to cultivate the carpet with a standardized soil seedlings. Seedling surface soil moisture under the finger pressure slightly raised nest is appropriate. DB43 / T742.1-2013 “Rice Transplanting Mechanized Technical Specifications Part 1: Seedling” Medium seedling indicators