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我国现有可耕地面积104.5×10~5km~2,人均耕地面积仅8.67hm~2,化肥在粮食增产中的作用约占33.7%.所产氮肥量约16×10~6t(折纯),其中碳铵约占51%.这是我国特有的氮肥品种,含有氮素和二氧化碳,肥效快,不板结土壤,但存在易挥发损失、不易贮存、肥效期短、氮素利用率低和易结成硬块等缺点.研究长效碳铵的目的是减少碳铵的氨挥发,降低转化为硝态氮的淋溶损失,提高氮素利用率与延长肥效期,在减少施肥量条件下能促进作物生长发育.经多年研究证明,该肥料具有明显的氨稳定作用及增加铵态氮在土壤中的贮存量.该项研究查明了使长效碳铵产生较大经济效益的DCD添加量;创建了系统生产法新工艺,从而实现了生产出新型碳铵的目的.
The area of arable land in our country is 104.5 × 10 ~ 5km ~ 2, the per capita arable land area is only 8.67hm ~ 2, and the role of chemical fertilizer in grain yield increase is about 33.7%. The amount of nitrogen fertilizer produced is about 16 × 10 ~ 6t, Among them, ammonium bicarbonate accounts for about 51% .This is a unique nitrogenous fertilizer species in our country, which contains nitrogen and carbon dioxide and has high fertilizer efficiency and non-compacted soil. However, it has volatile loss, is not easy to store, has short effective period, low utilization rate of nitrogen, Into lumps and other shortcomings.The purpose of the study of long-acting ammonium bicarbonate is to reduce ammonia volatilization of ammonium bicarbonate to reduce the leaching loss into nitrate nitrogen, improve nitrogen utilization and extend fertilizer efficiency, reduce the amount of fertilizer conditions to promote crops Growth and Development After many years of research it has been demonstrated that the fertilizer has significant ammonia stabilization and increased storage of ammonium nitrogen in the soil. This study identified the amount of DCD that would make long-acting ammonium bicarbonate more economical; The new method of system production method, thus achieving the purpose of producing a new type of ammonium bicarbonate.