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实验室模拟试验和田间试验结果表明,表施和混施长效碳铵较普通碳铵可在一定程度上减少氨的挥发损失;长效碳铵有一定的硝化抑制作用;长效碳铵施用量比经验施肥量减少195kg/hm2时,水稻产量不下降;采用二次曲线校正方程y=a+bxk+cx2k,能更准确地模拟碳铵肥料效应特征,对长效碳铵取k=1.1、普通碳铵k=1.2、二者在达到基本一致的最高产量时,长效碳铵的每公顷施用量比普通碳铵节省约70kg。
Laboratory simulation tests and field experiments showed that the surface application and mixing of long-acting ammonium bicarbonate can reduce the ammonia volatilization loss to a certain extent compared with ordinary ammonium bicarbonate; the long-acting ammonium bicarbonate has certain nitrification inhibiting effect; the long-acting ammonium bicarbonate application ratio The empirical formula of fertilization reduced by 195 kg / hm2 did not decrease the yield of rice. Using the quadratic curve correction equation y = a + bxk + cx2k, the effect of ammonium bicarbonate fertilizer can be simulated more accurately. For ammonium bicarbonate, k = 1.1, k = 1.2, both of which achieve approximately 70 kg less energy savings per hectare than conventional ammonium bicarbonate at a substantially uniform maximum yield.