摘要
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
Studier were conducted to determine the effect of amendments including nonion,anion and amphoteric water soluble polymer on the adsorpation of fertilizer ion(NH 4 +、NO 3 -、K +、PO 4 3- ) on amended soil and the anti\|water\|washing of fertilizer in amended soil.The experimental results shows that the adsorpation and the anti\|water\|washing of all kind of fertilizer ion on soil were increased by non\|ion and amphoteric polymer,the adsorpation and the anti\|water\|washing of cationic ion(NH 4 +,K +) on soil were increased by anion polymer,however,the adsorpation and the anti\|water\|washing of anionic ion(NO 3 -,PO 4 3- ) on soil were decreased by anion polymer.
出处
《土壤肥料》
CSCD
2000年第5期13-18,共6页
Soils and Fertilizers
基金
广东省自然科学基金资助项目
关键词
聚合物
抗淋溶效果
土壤结构改衣剂
肥料利用率
polymeric soil amendments
soil fertilizer
adsorpation anti\|water\|washing
