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开展了木薯秸秆生物炭对甘蔗苗期根系生长的影响,主要通过在苗期温室培养条件下,蔗田土壤中添加不同重量比例木薯秸秆生物炭对甘蔗苗期60 d根系生长的影响。结果表明,在土壤中添加木薯秸秆生物炭可以促进甘蔗苗期根系的生长,添加生物炭显著增加了地上部分与地下部分干物质的比值;另外发现蔗田土壤中添加20.00%重量比的木薯秸秆生物炭可以提高土壤p H值,增加土壤中速效磷和钾的含量,显著提高土壤中的有机质含量。因此,蔗田土壤中添加生物炭促进了甘蔗苗期根系的吸收能力,对土壤的理化性质具有一定的改良作用。
The effects of cassava straw biochar on root growth of sugarcane seedlings were studied. The effects of adding different proportions of cassava straw biochar on the 60 d root growth of sugarcane were studied under the condition of greenhouse cultivation at seedling stage. The results showed that the addition of cassava straw biochar to the soil could promote the growth of sugarcane roots at seedling stage. Adding biochar significantly increased the ratio of dry matter to aboveground and underground parts. In addition, it was found that 20.00% by weight of cassava straw Biochar can increase soil p H, increase available phosphorus and potassium in soil, and significantly increase soil organic matter content. Therefore, the addition of biochar to sugarcane soils promoted the absorption capacity of root system in sugarcane seedlings and had some improvement on the physical and chemical properties of soil.