Biochar-compost addition benefits Phragmites australis growth and soil property in coastal wetlands
Biochar-compost addition benefits Phragmites australis growth and soil property in coastal wetlands
复制标题
添加生物炭堆肥有利于沿海湿地芦苇的生长和土壤特性
DOI：
10.1016/j.scitotenv.2021.145166
复制
发表时间：
2021-01-25
影响因子：
9.8
通讯作者：
Yu, Fei-Hai
中科院分区：
文献类型：
--
作者：
Liang, Jin-Feng;Li, Qian-Wei;Yu, Fei-Hai
盐分胁迫对生长在滨海湿地的植物来说是很常见的。在土壤中添加生物炭可以通过其独特的物理化学性质来缓解盐分的负面影响。为了验证这一点，我们进行了一项温室试验，在该试验中，世界性湿地植物芦荟按析因设计接受了4个盐度处理(0、5、10和15ppm)和3个生物炭处理(不添加生物炭、添加生物炭和添加生物炭-堆肥，生物炭和堆肥都是由芦荟制成的)。在基质中添加生物炭和生物炭-堆肥均能提高南美白对虾的地下生物量，生物炭-堆肥显著提高了南美白对虾总质量35.5%和净光合速率51.4%。添加生物炭和添加生物炭-堆肥均能显著提高土壤有机碳含量62.9%和31.7%。但降低了土壤的氨态氮含量。在盐碱地上，与单独使用生物炭相比，生物炭-堆肥混合施用对南美白对虾的生长有较强的促进作用。因此，添加生物炭和堆肥可能是提高生长在土壤盐碱化常见环境胁迫的滨海湿地奥西拉菲斯生产力的合适途径。(C)2021年爱思唯尔B.V.保留所有权利。
Salinity stress is common for plants growing in coastal wetlands. The addition of biochar in the soil may alleviate the negative effect of salinity through its unique physicochemical properties. To test this, we conducted a greenhouse experiment where the cosmopolitan wetland plant Phragmites australis was subjected to four salinity treatments (0, 5, 10 and 15 parts per thousand) and three biochar treatments (no biochar addition, with biochar addition and with biochar-compost addition, both biochar and compost were made from P. australis) in a factorial design. Both biochar addition and biochar-compost addition to the substrate enhanced below-ground mass of P. australis, application of biochar-compost significantly increased total mass by 35.5% and net photosynthesis rate of P. australis by 51.4%. Both biochar addition and biochar-compost addition significantly increased soil organic carbon content by 62.9% and 31.7%. respectively, but decreased soil ammonium nitrogen content. In the saline soil, application of the mixture of biochar-compost had a strong, and positive effect on the growth of P. australis, compared to biochar alone. Therefore, incorporation of biochar and compost might be an appropriate approach to improve the productivity of P. ausirafis growing in coastal wetlands, where soil salinity is a common environmental stress. (C) 2021 Elsevier B.V. All rights reserved.