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研究了几类聚合物 (中性、阴离子型和两性型 )对土壤吸附 4种含肥料元素的离子(NH4 +、NO3 -、K+、PO4 3 -)和土壤肥料抗淋溶效果的影响。实验表明 ,中性和两性型聚合物能增加土壤对 4种离子的吸附量 ,并提高土壤含肥料元素离子的抗淋溶作用 ,随中性和两性型聚合物施用量的增大 ,土壤对 4种离子的吸附量和抗淋溶作用增加 ;阴离子型聚合物增加土壤对NH4 + 和 K+ 的吸附量及其抗淋溶作用 ,降低土壤对 NO3 -和 PO4 3 -的吸附量及其抗淋溶作用
The effects of several kinds of polymers (neutral, anionic and amphoteric) on the anti-leaching effect of four kinds of fertilizer elements (NH4 +, NO3-, K +, PO4 3 -) and soil fertilizers were studied. Experiments show that the neutral and amphoteric polymers can increase the amount of soil adsorption of four ions and increase soil anti-leaching element ions leaching, with the neutral and amphoteric polymer application rate increases, the soil The adsorption capacity and anti-leaching action of 4 kinds of ions increased. Anion-type polymer increased the amount of NH4 + and K + adsorbed by soil and its anti-leaching action, decreased the amount of NO3- and PO4 3- Dissolution