摘要
利用化学分析法研究了高吸水性树脂对土壤中氮、磷、钾养分的影响。结果表明 ,聚丙烯酸钠高吸水性树脂本身对氮、磷、钾养分有较强的吸附和解吸能力 ,当施入土壤后 ,这种能力显著下降。但与土壤本身对这三种养分的作用相比 ,高吸水性树脂的使用 ,增强了土壤对氮和钾的吸附、固定及解吸 ;虽然对土壤吸附磷的影响并不大 ,但提高了土壤对磷的解吸能力 ,减弱了土壤对磷的固定作用 ,从而使磷的有效性得到提高。综合来看 ,聚丙烯酸钠高吸水性树脂的使用 。
The influence of super absorbent resin on nitrogen, phosphor and potassium in soil were studied. The super absorbent resin had good ability to absorb and release nitrogen, phosphor and potassium. When it was used in soil, this function badly debased. Compared with self of soil, super absorbent resin enhanced the ability of soil to absorb, fix and release nitrogen and potassium,increased the ability of soil to release phosphor,decrease the ability of soil to fix phosphor,improved the utilization ratio of phosphor. Summarized, the utilization of sodium polyacrylate was benefited the retention and delay of fertilizer of soil.
出处
《化工技术与开发》
CAS
2004年第6期11-14,共4页
Technology & Development of Chemical Industry
关键词
高吸水性树脂
聚丙烯酸钠
广州赤红壤
保肥作用
super absorbent resin
sodium polyacrylate
soil
function of fertilizer retention
