一、液氨施肥铲刀与覆土器 液氨施肥铲刀和覆土器是液氨施肥机的主要工作部件之一。 (一)液氨施肥(铲)刀 施肥(铲)刀固定在施肥机机架上,当机组前进时,机架同时下降使施肥刀进入土壤。常用的施肥(铲)刀,主要由刀柄、直刀和输氨管组成。输氨管为内径6—8毫米的钢管,大多焊接在施肥(铲)刀刀柄的背部,并向下延长接近刀尖。输氨管下端的喷氨口开在侧面,工作时液氨从施肥(铲)刀两侧面排放。 First, the liquid ammonia fertilizer blade and cover liquid ammonia fertilizer blade and cover the liquid ammonia fertilizer is one of the main working parts. (A) liquid ammonia fertilizer (shovel) knife fertilization (shovel) knife fixed in the fertilizer machine rack, when the unit forward, the rack at the same time so that the fertilizer knife into the soil. Commonly used fertilizer (shovel) knife, mainly by the knife handle, straight knife and ammonia composition. The ammonia tube is a 6-8 mm ID steel tube, mostly welded to the back of a fertilizing (shovel) knife shank and extending down to the tip. Ammonia ammonia outlet at the bottom of the ammonia open on the side, the work of liquid ammonia fertilizer (shovel) both sides of the knife discharge.