氨水为液体氮素化肥,深施效果显著。我们改制的简易深施器,可追施氨水和其它溶解后的固体化肥。这种深施器制作简单。以长4尺的木棍作推杆,杆的一端接上长1.2尺的木柄,另一端接钉长1尺、宽0.3尺、厚0.15尺的木板,木板做成弧形,头一端成船头形,以便操作时减轻推力,板的中间打一个 Ammonia is a liquid nitrogen fertilizer, deep application of significant results. Our easy-to-adapt deep-sinker relies on ammonia and other dissolved solid fertilizers. This deep device is easy to make. A 4-foot-long wooden stick was used as a push rod. One end of the rod was connected to a wooden handle with a length of 1.2 feet and the other end was connected with a wooden board of 1-foot long, 0.3-foot wide and 0.15-foot thick. Bow-shaped, so as to reduce the thrust when operating, the middle of the plate hit a