生物炭和稻壳灰改良黏性土耕作性能的试验研究

为了解麦秸秆生物炭和稻壳灰作为土壤改良材料对黏性土耕作性能的影响,将两者分别按照体积比为10%、20%和30%加入上海黏性土中,采用室内试验的方法研究两种混合土的稠度指数和击实性能.试验结果表明:稻壳灰和麦秸秆生物炭均可以改善上海黏性土的稠度指数和击实性能,增加土壤的疏松度,提高持水能力;当施加量为20%时,改良效果最好;总体来说,麦秸秆生物炭的改良效果要优于稻壳灰.研究结果为资源回收利用提供理论依据和数据支撑,是对绿色农业健康经济发展的有益探索.

Experimental Studies on Cultivation Performance of Clayey Soil Improvedby Biochar and Rice Husk Ash

In order to determine influences of biochar and rice husk ash as soil improvement materials on the cultivation performance of cohesive soil, biochar and rice husk ash were mixed with Shanghai clay according to the volume ratio of 10%, 20% and 30%, respectively. Consistency index and compaction performance of the mixture were investigated through laboratory experiments. The results show that both rice husk ash and biochar can improve the consistency index and compaction performance of Shanghai cohesive soil, which is beneficial to increase the soil porosity and water holding capacity. When the amount of application is 20%, the improvement effect is the best. But in general, the improvement effect of biochar is better than rice husk ash, which provides a theoretical basis and data support for resource recovery and utilization, and has implications for green agricultural economic growth.