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为考察生物炭基保水剂对土壤及作物的作用效果,利用自制的生物炭基保水剂,采用铝盒法和盆栽法探讨了不同种类保水剂对土壤持水保水性能及油菜生长的影响。结果表明:施用生物炭基保水剂可以有效提高土壤的持水保水性能,提高油菜的地上生物量及水分利用效率;生物炭基保水剂B作用效果最优,与对照相比,土壤饱和含水率提高13.54%,土壤水分蒸发速率降低31.98%,油菜地上生物量增加30%~50.1%,土壤水分利用效率提高56.7%~110.9%,本研究可为低成本、高效保水剂的开发及应用提供参考。
In order to investigate the effects of biochar-based SAPs on soil and crops, the effects of different types of SAPs on soil water retention and rapeseed growth were investigated by using aluminum box and potting methods. The results showed that the biochar-based SAP could effectively improve the water-holding capacity and water-holding capacity of the soil, and increase the aboveground biomass and water use efficiency of rape. The biochar-based SAP had the best effect. Compared with the control, the saturated soil moisture Increased by 13.54%, the evaporation rate of soil water decreased by 31.98%, the aboveground biomass of rapeseed increased by 30% -50.1%, and the soil water use efficiency increased by 56.7% -110.9%. This study can provide references for the development and application of low cost and high efficiency water-retaining agent. .