| Autor: |
Li-Hong, Shi, Hai-Ming, Tang, Li, Wen, Kai-Kai, Cheng, Chao, Li, Wei-Yan, Li, Xiao-Ping, Xiao |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Ying yong sheng tai xue bao = The journal of applied ecology. 33(9) |
| ISSN: |
1001-9332 |
| Popis: |
There is close relationship between fertilizer managements and net carbon (C) sink effect, economic benefits in rice paddy ecosystem. Based on a long-term (35-year) field experiment, we analyzed the effects of different fertilization patterns on soil C sequestration rate, C density of topsoil, annual C balance, and economic benefits in the double cropping rice paddy in southern China. There were four fertilization treatments, chemical fertilizer alone (MF), rice straw and chemical fertilizer (RF), 30% organic manure and 70% chemical fertilizer (OM), and without any fertilizer input as a control (CK). The results showed that soil C pool in the double cropping rice paddy field under different fertilization treatments changed from 216.02 to 866.74 kg·hm施肥措施与稻田生态系统净碳汇效应、经济收益的关系密切。本研究以长期(35年)定位施肥试验田为平台,分析了单独施用化肥(MF)、秸秆还田+化肥(RF)、30%有机肥+70%化肥(OM)和无肥对照(CK)4种不同施肥模式对我国南方双季稻田耕层土壤固碳速率、碳密度、年碳汇平衡和经济收益的影响。研究表明: 不同施肥处理双季稻田耕层土壤碳库变化范围为216.02～866.74 kg·hm |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
