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在机械深施肥作业中,一般都采用凿式深松铲或滑刃式开沟器开沟,然后通过导肥管将化肥导入土层或导入不同深度的土层(分层施肥),以达到深施或侧深施肥的目的。这种作业方式,对于大、中型拖拉机来说,无论在秋起垄或春播机械作业中的施肥效果都是令人满意的;但在小型垅作机械进行“垄三”栽培作业中,使用上述类型的开沟器进行深施肥就显得不适用了。经过多年观察,小型垅作机进行“垄三”作业的深施肥深度,一般都在5厘米左右,而达不到8～12厘米的深度要求,至于12厘米以上更
In the mechanical deep fertilization operation, generally use the chisel deep shovel or sliding blade opener ditching, and then through the fertilizer pipe into the soil or into the soil at different depths (stratified fertilization) to achieve Deep application or deep side fertilization purposes. This mode of operation, for large and medium-sized tractors, whether in the autumn ridge or spring sowing machinery in the operation of the fertilization effect is satisfactory; However, the small 垅 for machinery “ridge three” cultivation operations, using the above The type of opener for deep fertilization does not apply. After many years of observation, the operation of the small 垅 for “ridge three” deep fertilization depth, generally about 5 cm, while less than 8 to 12 cm depth requirements, as more than 12 cm