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农家肥虽然具有养分含量齐全,活化疏松土壤,改善土壤结构质地等优点,但同时也存在着有效养分含量低,肥效发挥迟缓等缺点。如何才能避“短”扬“长”,提高肥效,在农家肥中适量的混配些化肥做“添加剂”,是非常可取的措施。 一、人粪尿加硫酸亚铁 在每100公斤人粪尿中添加硫酸亚铁0.5～0.6公斤,可有效地抑制人粪尿中的氮素损失。 二、人粪尿添加过磷酸钙 在100公斤人粪尿中添加5公斤过磷酸钙,搅拌均匀后堆贮3～5天,可使人粪尿中极易挥发损失的硫酸铵转化性质稳定的磷酸铵,以磷保氮。 三、围肥添加过磷酸钙 在圈肥中添加2％的过磷酸钙,充分搅拌均匀后,堆贮20天左右,即成为优质的有机肥料,其肥效可提高1倍以上。
Though farmyard manure has the advantages of complete nutrient content, activated loose soil, and improved soil structure and texture, there are also some shortcomings such as low effective nutrient content and sluggish fertilizer efficiency. How can we avoid “short” Yang “long” to improve fertilizer efficiency, in the amount of fertilizer in the farm manure mixed with some fertilizer as “additives” is a very desirable measure. First, the human excrement plus ferrous sulfate in every 100 kg of human excrement added 0.5 to 0.6 kg of ferrous sulfate, which can effectively inhibit the loss of nitrogen in human excrement. Second, the human excrement added superphosphate Calcium sulfate in 100 kg of human excrement added 5 kg of superphosphate, mixing evenly after 3 to 5 days storage, can make the human excrement in the most volatile volatile ammonium sulfate transformation of stable nature Ammonium phosphate, nitrogen phosphorus. Third, the fat add superphosphate Add 2% of the superphosphate in the circle of superphosphate, stir, piled for about 20 days, that is, become a high-quality organic fertilizer, its fertilizer efficiency can be increased more than 1 times.