华南农业大学学报2018，Vol.39Issue(1)：42-46,5.
生物炭施用对水稻育秧土理化特性和秧苗素质的影响
Effect of biochar addition on physicochemical properties of nursery soil and traits of rice seedlings
摘要
Abstract
[Objective]To understand the potential use of biochar in rice seedling nursery.[Method]Cassava straw biochar was used to determine the effects of biochar addition (φ=25％) on physicochemical properties of nursery soil, and root and shoot traits of rice seedlings under different sowing dates.[Result]Compared with control, cassava straw biochar improved the physicochemical properties of nursery soil, with bulk density decreased by 0.66 g·cm-3, pH, organic matter and alkalized nitrogen contents increased by 0.51, 50 mg·cm-3 and 195 μg·cm-3respectively. Besides, with the addition of cassava straw biochar, length, surface area, volume and biomass of root system and rooting ability increased by 32.4％, 30.1％, 50.0％, 13.7％ and 21.5％ respectively, and leaf area, plant height, basal stem width and aerial biomass of seedlings increased by 19.2％, 8.0％, 5.3％ and 10.2％ respectively. The effect of biochar addition on rice seedling traits varied with sowing date. Biochar had significant effect on seedling traits on the sowing date under relatively lower temperature.[Conclusion]Biochar can improve the quality of rice seedlings, especially under relatively low temperature conditions. Biochar is a kind of beneficial additive of rice nursery soil.关键词
生物炭/水稻/育秧土/理化特性/秧苗素质Key words
biochar/rice/nursery soil/physicochemical property/seedling quality分类
农业科技引用本文复制引用
范龙,吴啸鹏,黄敏,江立庚,邹应斌..生物炭施用对水稻育秧土理化特性和秧苗素质的影响[J].华南农业大学学报,2018,39(1):42-46,5.基金项目
国家自然科学基金(31460332) （31460332）
