江淮丘陵地带稻作区，以麦一稻一年二熟（老二熟）的种植制度，由于秋种时旱、涝频繁，小麦适时播种难、规范化整地难，不易形成壮苗越冬，面对缺水易旱的溪、冲稻作田，在无外来水源保证时，伏旱严重威胁着水稻产量，加之，丘陵地带稻作田一般水利条件都较差，旱年常常是有栽? Jianghuai hilly areas paddy area, with wheat one year of second-year (second generation) planting system, due to autumn drought, frequent floods, timely sowing of wheat difficult, standardized land preparation difficult, difficult to form strong seedlings wintering, the face of In the absence of external water sources, the drought threatens the output of rice seriously. In addition, the general water conditions in the rice fields in the hilly areas are poor, and the dry years are often planted.