地实验提供一个机会在土壤上学习授精的效果器官的碳(SOC ) 隐遁。我们取样了土壤从一长期(25 年) 在副热带的中国的稻实验。实验包括了八个处理:( 1 )检查,( 2 ) PK ,( 3 ) NP ,( 4 ) NK ,( 5 ) NPK ,( 6 ) 7F:3M ( N , P , K 无机的fertilizers+30%器官的 N ),( 7 ) 5F:5M ( N , P , K 无机的fertilizers+50%器官的 N ),( 8 ) 3F:7M ( N , P , K 无机的fertilizers+70%器官的 N )。授精与非使肥沃的检查处理相比在犁层增加了 SOC 内容。在顶的 SOC 密度 100 厘米土壤从 73.12 ~ 91.36 Mg/ha 。所有化肥处理的 SOC 密度比检查的大。联合了无机的化肥和器官的修正案的那些处理比收到仅仅无机的化肥的那些有更大的 SOC 密度。SOC 密度密切被相关到从器官的修正案和米饭残余变换的土壤碳的和。在稻土壤的碳隐遁能被平衡并且联合的授精完成。联合无机的化肥和器官的修正案的授精是一个有效持续惯例扣押 SOC。
Field experiments provide an opportunity to study the effects of fertilization on soil organic carbon (SOC) sequestration. We sampled soils from a long-term (25 years) paddy experiment in subtropical China. The experiment included eight treatments: (1) check, (2) PK, (3) NP, (4) NK, (5) NPK, (6) 7F:3M (N, P, K inorganic fertilizers+30% organic N), (7) 5F:5M (N, P, K inorganic fertilizers+50% organic N), (8) 3F:7M (N, P, K inorganic fertilizers+70% or- ganic N). Fertilization increased SOC content in the plow layers compared to the non-fertilized check treatment. The SOC density in the top 100 cm of soil ranged from 73.12 to 91.36 Mg/ha. The SOC densities of all fertilizer treatments were greater than that of the check. Those treatments that combined inorganic fertilizers and organic amendments had greater SOC densities than those receiving only inorganic fertilizers. The SOC density was closely correlated to the sum of the soil carbon converted from organic amendments and rice residues. Carbon sequestration in paddy soils could be achieved by balanced and combined fertilization. Fertilization combining both inorganic fertilizers and organic amendments is an effective sustainable practice to sequestrate SOC.