期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
超微活化条件对磷矿粉磷素形态及肥效的影响 被引量:9
1
作者 黄雷 毛小云 +3 位作者 陈娴 孙雄松 王君 廖宗文 《土壤学报》 CAS CSCD 北大核心 2013年第4期769-777,共9页
采用化学分析、红外光谱分析以及盆栽试验研究了活化剂添加量及研磨时间对超微活化磷矿粉磷素形态及生物有效性的影响。结果表明,与普通磷矿粉相比,磷矿粉经超微活化处理后有效磷提高了45.1%~58.7%,活性磷提高了169.4%~203.6%,水溶性... 采用化学分析、红外光谱分析以及盆栽试验研究了活化剂添加量及研磨时间对超微活化磷矿粉磷素形态及生物有效性的影响。结果表明,与普通磷矿粉相比,磷矿粉经超微活化处理后有效磷提高了45.1%~58.7%,活性磷提高了169.4%~203.6%,水溶性磷含量随活化剂添加量的增加也明显提高;当活化剂添加量达到5%时,3次水溶性磷的累积释放量较相同条件下制得的超微细磷矿粉提高84倍以上。适当延长研磨时间有利于磷矿粉磷素的释放,但效果不显著。红外光谱分析结果表明:超微细活化磷矿粉中与PO34-、HPO24-相关的特征吸收峰强度较普通磷矿粉显著增强,且生成了与PO34-、HPO24-相关的新特征吸收峰,使磷矿粉中的磷向有效状态转变。盆栽试验结果进一步表明,超微活化磷矿粉处理的玉米生物量、磷素利用率均显著高于磷矿粉、普通超微细磷矿粉以及过磷酸钙和磷酸二铵等常规水溶性磷肥,可增强抗固定能力而显著提高土壤有效磷含量。超微活化磷矿粉较高的活性磷总量和水溶性磷持续适度的供磷强度是其生物有效性高的原因。 展开更多
关键词 超微活化 磷矿粉 磷素有效性 肥效
下载PDF
宁夏苏峪口磷矿绿色开发的技术思路探讨
2
作者 向连格 杨合群 +3 位作者 刘颖 陆茂欣 王红 汪栋刚 《现代矿业》 CAS 2023年第3期244-248,共5页
宁夏苏峪口磷矿一般先浮选出精矿粉,再用硫酸加工生产过磷酸钙,该方法存在耗能过高及污染环境的问题。为了今后能继续绿色地开发贺兰山苏峪口磷矿资源,参考磷肥领域试验研究成果,对苏峪口磷矿绿色开发的技术思路进行了探讨研究。结果表... 宁夏苏峪口磷矿一般先浮选出精矿粉,再用硫酸加工生产过磷酸钙,该方法存在耗能过高及污染环境的问题。为了今后能继续绿色地开发贺兰山苏峪口磷矿资源,参考磷肥领域试验研究成果,对苏峪口磷矿绿色开发的技术思路进行了探讨研究。结果表明,可以在矿石利用过程中简化加工流程,直接制造硅钙磷肥或超微活化磷矿粉肥,从而实现绿色、节能、环保地开发利用贺兰山苏峪口磷矿资源。 展开更多
关键词 绿色开发 苏峪口磷矿 硅钙磷肥 超微活化磷矿粉肥
下载PDF
Effects of Wet Superfine Grinding on Polyphenols and Antioxidant Activities of Whole Fruit Pulp of Navel Orange
3
作者 PAN Lang HU Xiao +3 位作者 DING Sheng-hua LIANG Zeng-enni CHANG Xia SHAN Yang 《Agricultural Science & Technology》 CAS 2019年第4期13-19,共7页
The navel orange were cleaned and pulverized by a wet superfine grinding and a broken wall cooking machine,then the navel orange whole fruit pulp were obtained by wet superfine grinding once,wet superfine grinding twi... The navel orange were cleaned and pulverized by a wet superfine grinding and a broken wall cooking machine,then the navel orange whole fruit pulp were obtained by wet superfine grinding once,wet superfine grinding twice,and broken wall cooking machine processing.The particle size distribution,free polyphenols,bound polyphenols and antioxidant activity of whole fruit pulp prepared by the three kinds of pulverization methods were discussed.The results showed that the particle size distribution of the whole fruit pulp by wet superfine grinding was more concentrated compared with the broken-wall cooking machine processing,and the total phenols dissolution rate of the navel orange whole pulp was increased by 6.9%,and the total flavonoid dissolution rate was increased by 13.5%.The results also suggested that wet superfine grinding twice could improve 1,1-diphenyl-2-picrylhydrazyl(DPPH)free radical scavenging activity of polyphenols in the whole fruit pulp,wet superfine grinding once and wet superfine grinding twice also could obviously enhance the reducing power and iron reduction ability of polyphenols in the whole fruit pulp.In conclusion,wet superfine grinding could increase both the polyphenol content and antioxidant activity of navel orange whole fruit pulp,it can be used as a pretreatment processing method for preparing navel orange whole fruit pulp. 展开更多
关键词 Navel orange Superfine grinding POLYPHENOLS Antioxidant activities Whole fruit pulp
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部