稻田机械深施化肥是节本增效之举沅江市农业技术推广中心一、试验目的沅江市位于洞庭湖西南，是全国商品粮生产基地县之—。从七十年代开始，就推广碳铵人工深施。但人工深施化肥劳动量增加，故推而不广。沅江市农机局为解决这个向题，研制出２Ｆ－２５型化肥深施器。这为... Rice machinery deep fertilizer is a cost-saving move Yuanjiang Agricultural Technology Promotion Center First, the purpose of the trial Yuanjiang City, located in the southwest of Dongting Lake, is the country’s commodity grain production base counties -. From the seventies on the promotion of ammonium bicarbonate artificial facilities. However, the amount of man-made chemical fertilizers increased, it is not widely promoted. Yuanjiang City Agricultural Machinery Bureau to solve this problem, developed a 2F-25-type fertilizer device. This is ...