一个长期的授精实验在北 Xinjiang 被建立,评估庄稼生产的动力学并且与七个授精处理从 1990 ~ 2012 玷污器官的碳(SOC ) 的中国。七个处理包括了未受精的控制(CK ) 和磷(P) ,钾(K) ,氮(N) ,稻草(S) 和动物粪肥(M) 的六不同联合。显著地有的平衡授精处理(P < 0.05 ) 更高比失衡的平均收益。有从钾硫酸盐(NPK ) 的 2/3 N 和从农家庭院粪肥(NPKM ) 的 1/3 N 的处理比另外的处理有更高平均的收益。平均收益(在 23 年) 在 NPK,和脲的处理,钙过磷酸钙(NP ) 没显著地不同(P > 0.05 ) 但是在有脲和钾硫酸盐的处理比那高(NK;P < 0.05 ) 。结果也证明 SOC 的最高的增加(P < 0.05 ) 随 1.2 t C/ 的潜在的增加发生在 NPKM (hm 2 一) 。SOC 的增加仅仅是 0.31, 0.30 和 0.12 t C/(hm 2 一) 为 NPKS (从从稻草的 NPK 和 1/10 N 的 9/10 N ) , NPK 和 NP 分别地;并且在 NP, NK 和 CK 处理的 SOC 正在接近平衡那么没在 23 年的实验上显著地升起或掉落。一个完全的 NPK 正粪肥授精节目被推荐让这个极其干旱的区域最大化收益和碳隐遁。
A long-term fertilization experiment was set up in northern Xinjiang, China to evaluate the dynamics of crop production and soil organic carbon (SOC) from 1990 to 2012 with seven fertilization treatments. The seven treatments included an unfertilized control (CK) and six different combinations of phosphorus (P), potassium (K), nitrogen (N), straw (S) and animal manure (M). The balanced fertilization treatments had significantly (P〈0.05) higher average yields than the unbalanced ones. The treatment with 2/3 N from potassium sulfate (NPK) and 1/3 N from farmyard manure (NPKM) had a higher average yield than the other treatments. The average yields (over the 23 years) in the treatments of NPK, and urea, calcium superphosphate (NP) did not differ significantly (P〉0.05) but were higher than that in the treatment with urea and potassium sulfate (NK; P〈0.05). The results also show that the highest increases in SOC (P〈0.05) occurred in NPKM with a potential increase of 1.2 t C/(hm2.a). The increase in SOC was only 0.31, 0.30 and 0.12 t C/(hm2.a) for NPKS (9/10 N from NPK and 1/10 N from straw), NPK and NP, respectively; and the SOC in the NP, NK and CK treatments were approaching equilibrium and so did not rise or fall significantly over the 23-year experiment. A complete NPK plus manure fertilization program is recommended for this extremely arid region to maximize both yields and carbon sequestration.