使用机械进行中耕,除了做好机具的准备外,还必须掌握以下农业技术要求。头遍中耕.松土迎风.第一次中耕宜早不宜迟,当玉米、高粱小苗出齐长出三、四片真叶时即可进行中耕。其作用是,疏松土壤,提高地温,挡风保苗,促进小苗早发。这次中耕要配深松铲和双翼铲,深度要达到20～25厘米,行间最深处应打破犁底层,垄邦处也应接近翻地深度。 The use of machinery for cultivation, in addition to doing a good job of preparing equipment, but also must grasp the following requirements of agricultural technology. The first time cultivator should not be late, when corn, sorghum seedlings grow up out of three or four true leaves can be cultivated. Its role is to loosen the soil, improve ground temperature, wind and seedlings to promote early emergence of young seedlings. The cultivation should be equipped with deep-shovel shovel and shovel, depth to reach 20 to 25 cm, the deepest line should break the bottom plow, ridge state should also be close to turning depth.