Jing Yan, Chen Xiao-min, Liu Zu-xiang, Huang Qian-ru, LiI Qiu-xia, Chen Chen, Lu Shao-shan
College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
Ying Yong Sheng Tai Xue Bao. 2013 Apr;24(4):989-94.
Aiming at the low content of available phosphorus in upland red soil of Southern China, this paper studied the effects of combined application of biochar and inorganic fertilizers on the available phosphorus and organic carbon contents and the pH of this soil. With the combined application of biochar and inorganic fertilizers, the soil physical and chemical properties improved to different degrees. As compared with the control, the soil pH and the soil organic carbon and available phosphorus contents at different growth stages of oil rape after the combined application of biochar and inorganic fertilizers all had an improvement, with the increments at bolting stage, flowering stage, and ripening stage being 16%, 24% and 26%, 23%, 34% and 38%, and 100%, 191% and 317% , respectively. The soil pH and the soil organic carbon and available phosphorus contents were increased with the increasing amount of applied biochar. Under-the application of biochar, the soil available phosphorus had a significant correlation with the soil pH and soil organic carbon content. This study could provide scientific basis to improve the phosphorus deficiency and the physical and chemical properties of upland red soil.
针对中国南方旱地红壤有效磷含量低的问题，本文研究了生物炭与无机肥料配施对该土壤有效磷、有机碳含量及pH值的影响。生物炭与无机肥料配施后，土壤理化性质有不同程度改善。与对照相比，生物炭与无机肥料配施后，油菜不同生育期土壤pH值、土壤有机碳和有效磷含量均有提高，抽薹期、开花期和成熟期的增幅分别为16%、24%和26%，23%、34%和38%，100%、191%和317%。土壤pH值、土壤有机碳和有效磷含量随生物炭施用量增加而升高。施用生物炭后，土壤有效磷与土壤pH值和土壤有机碳含量呈显著相关。本研究可为改善旱地红壤缺磷状况及理化性质提供科学依据。
