提高草木灰中各元素的有效性研究

The research on increasing of efficiency of each element in plant ash

考察了煅烧温度、煅烧时间对草木灰中各元素的有效性影响.实验结果表明:草木灰经700℃煅烧1.0h,所含的硅能够大量转化为可溶性硅,其他元素可溶性物质无明显改变,故可作为硅肥的补充剂使用;以盐酸为浸提剂实验效果最好;浸提温度对实验结果影响不明显.

The plant ash contains large amounts of silicon,phosphorus,potassium,calcium and so on.Experiments,mainly on the calcination temperature and time on the effectiveness of various elements.Calcination temperatures were chosen 590℃,700℃,900℃,calcination time were selected 0.5,1.0,1.5,2.0 h.To investigate the test results,were used citric acid,hydrochloric acid,sodium borate as the extraction solvent,extraction temperature were chosen 20℃,25℃,30℃,35℃,40℃.Test showed that the plant ash after calcination at 700℃,which contains a large number of silicon can be converted into soluble silicon,silicon can be used as supplements.Experiment showed that plant ash calcined at 700℃ 1.0h,which contains a large number of silicon can be converted into soluble silicon,silicon can be used as supplements to use.Among these,hydrochloric acid test for the best extraction solvent,extraction temperature is not obvious.