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由四平市农机化研究所研制的1G—4型和1GY—2型根茬还田机均采用卧式施耕刀辊,利用高速旋转的耕刀将作物的根茬铣切粉碎,并与土壤均匀混合,达到根茬还田、培肥地力的目的。这两种机械1991年均通过省级鉴定,目前已投入批量生产。主要技术参数: 1G—4型根茬粉碎还田机配套动力:长春—40、上海—50、东方红—75等大中型拖拉机作业行数:4行作业深度:7～13厘米可调适应行距:60～70厘米可调作业效率:10～15亩/小时碎茬率:大于90％,残茬长度小于5厘米碎土率:大于95％,土块直径小于5厘米
Developed by Siping Institute of Agricultural Mechanization 1G-4 and 1GY-2-type stubble back to the field machines are used horizontal roller blade, the use of high-speed rotation of the tillage cutter crop stubble mill crushed, and soil Evenly mixed to reach roots stubble, fertilizing the purpose of fertility. Both of these machines passed the provincial appraisal in 1991 and are now in mass production. The main technical parameters: 1G-4 stubble crushed field machine supporting power: Changchun -40, Shanghai -50, Dongfanghong -75 and other large and medium-sized tractors Number of rows: 4 rows Depth of work: 7 ~ 13 cm Adjustable spacing : 60 ~ 70 cm Adjustable operating efficiency: 10 ~ 15 mu / h Stubble rate: more than 90%, stubble length less than 5 cm Broken soil rate: more than 95%, clods less than 5 cm in diameter