施用无机碳肥对小麦生长及全碳累积量的影响

Effects of applying inorganic carbon fertilizer on wheat growth and total carbon accumulation

【目的】探究施用无机碳肥对小麦的促生作用及补碳效应。【方法】在保证氮素供应水平相同的情况下,通过盆栽试验,以硝酸铵为对照,在追肥后2、5、10、30 d取样,分析土壤施用碳酸氢铵对小麦生长及全碳累积量的影响。【结果】无机碳肥的施用促进了小麦生长,与对照相比,追肥后5、10、30 d,小麦株高增幅0.36%~9.45%、叶面积增幅6.15%~19.95%、鲜重增幅3.81%~20.80%、干重增幅3.13%~29.65%;无机碳肥的施用影响小麦植株体内的全碳累积量,与对照相比,在追肥后5、10、30 d时,小麦植株体内全碳含量增幅0.17%~0.68%、全碳累积量增幅3.83%~28.82%。【结论】无机碳肥碳酸氢铵中的碳能够被小麦吸收利用并参与碳素代谢过程,促进小麦的生长。

【Objective】To explore the effect of inorganic carbon fertilizer on wheat growth and carbon supplement.【Methods】Under the condition of ensuring the same nitrogen supply level,pot experiment was conducted to analyze the effects of ammonium bicarbonate application on wheat growth and total carbon accumulation by taking ammonium nitrate as control and sampling at 2,5,10 and 30 days after topdressing.【Results】Application of inorganic carbon fertilizer promoted the growth of wheat.Compared with the control,the plant height,leaf area,fresh weight and dry weight increased by 0.36%-9.45%,6.15%-19.95%,3.81%-20.80%and 3.13%-29.65%respectively at 5,10 and 30 days after topdressing.Application of inorganic carbon fertilizer had impacts on the total carbon accumulation in wheat plants.Compared with the control,the total carbon content in wheat increased by 0.17%-0.68%and the total carbon accumulation increased by 3.83%-28.82%at 5,10 and 30 days after topdressing.【Conclusion】The carbon in the inorganic carbon fertilizer ammonium bicarbonate could be absorbed and utilized by wheat,to participate in the process of carbon metabolism,and promote the growth of wheat.