新型高分子缓释化肥MSF的养分释放研究

Study on nutrient releasing of a macromolecule slow-release fertilizer-MSF

对一种含氮、磷、钾三种营养元素的高分子型缓释化肥-MSF,分别在去离子水及土壤溶液中进行了养分释放规律的研究。实验结果显示:在120d内,MSF在去离子水中失重不到40%,氮、磷、钾三种营养元素也只分别溶出了30%、28%和38%;而在土壤溶液中,在120d内,MSF失重接近100%,氮、磷、钾三种营养元素基本完全转化为小分子物质溶入土壤溶液中。实验结果表明:(1)MSF初期溶出率较低,能显著的减少淋溶损失;(2)MSF能在土壤溶液中完全降解,养分可利用率高;(3)MSF水解反应缓慢,性能较为稳定,便于存放和使用。

The slow-release regularity of a macromolecule slow-release fertilizer-MSF in de-ionized water and soil solution was studied, and the MSF which contains nitrogen, phosphorus, kalium nutrient elements has got though application patent. Experimental results showed that weight loss of MSF is less than 40%. Three nutrient elements of N,P,K separately are dissolved 30%, 28%, 38% in de-ionized water in 120 days. But in soil solution weightlessness of MSF is nearly 100% in 120 days. Three nutrient elements of N,P,K almost completely transfer into small molecules dissolved into soil solution. Experimental results indicated that： （1）Preliminary solubility of MSF is low, which can significantly reduce leach damage. （2）MSF is degraded completely in soil solution＇ utilization ratio of nutrient elements is high. （3）Hydrolytic reaction of MSF is low, convenience using and storage.