耕地机组在田间作业中,地头转弯是一个重要环节,直接影响机组的经济效益和使用寿命,也是反映驾驶员技术水平的一个标志。下面以东方红—75(54)牵引铧式犁作业机组为例,谈谈田间作业转弯的操作要领。起落线是升、降犁的标志线,也是作业区和转弯地带的分界线。起落线应在距地头1.5倍于机组总长度处。可以用犁的尾铧少许入土(约5～8厘米),与地头平行耕出一条印痕,作为起落线。机组在作业时,还必须有作业 Arable land units in the field operations, turning the ground is an important part of a direct impact on the unit’s economic efficiency and service life, but also reflect the technical level of a sign of the driver. The following to the East Red -75 (54) Plow plow operating unit, for example, to talk about the operation of field operations turning essentials. Landing line is the rising, falling plow mark line, but also the operating zone and the turning point of the dividing line. The landing line should be 1.5 times the total length of the unit from the ground. You can use the plow tailshare a little soil (about 5 to 8 cm), and the ground parallel to cultivate a footprint, as the landing line. When the unit is working, it must also have a job