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氮素化肥可用作基肥和追肥,宜分次施用每次量不宜过大,以免造成氮素的损失。碳铵:一般含氮量16—17.5％。适用于各种土壤和作物。作基肥每亩用量40—60斤,追肥每亩用量30—40斤。总用量每亩不宜超过120斤。氨水:含氮15—20％。作基肥施用时不能直接与种子接触,每亩用量不宜超过100斤。作追肥时要用特制的氨水管,直接漏入土壤耕层,不能接触作物的任何部分如根、叶、茎等。
Nitrogen fertilizer can be used as a base fertilizer and top dressing, should be graded application each amount should not be too large, so as to avoid the loss of nitrogen. Ammonium bicarbonate: The general nitrogen content of 16-17.5%. Suitable for all kinds of soil and crops. Basal fertilizer for the amount of 40-60 kg, 30-40 kg of fertilizer per acre topdressing. The total amount of acre should not exceed 120 pounds. Ammonia: Nitrogen 15-20%. For basal application can not directly contact with the seed, the amount of acre should not exceed 100 pounds. When used for topdressing, a specially made ammonia water pipe is used to directly leak into soil plowing and can not touch any part of the crop such as roots, leaves, stems and the like.