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雨,越下越大。沤烂的草垛四周,一股股酱油似的水漫流着…… 在农村生活过的人,对上述现象是司空见惯的。你可别嫌这褐色的水肮脏,它里面含有一种特殊的肥料——腐殖酸。 腐殖酸是死亡了的动物或植物残体,在微生物的作用下,经过复杂的生物化学变化而生成的一种酸类物质。腐殖酸是由碳、氢、氧、氮、硫及少量的磷等元素组成的。天然的腐殖酸,广泛地存在于土壤、河泥、风化煤、褐煤和泥煤(又叫草炭、泥炭)之中,具有一定的肥效。但天然的腐殖酸,大多都很难溶解于水,不易被庄稼吸收。不
The rain is getting heavier. Around the rotten haystacks, a stream of soy sauce and water ... People living in rural areas are commonplace. You do not mind this brown water dirty, it contains a special kind of fertilizer - humic acid. Humic acid is a dead animal or plant residue, under the action of microorganisms, after a complex chemical and biological changes generated an acid. Humic acid is composed of carbon, hydrogen, oxygen, nitrogen, sulfur and a small amount of phosphorus and other elements. Natural humic acid, widely found in soil, river mud, weathered coal, lignite and peat (also known as peat, peat), with a certain effect. But the natural humic acid, most are difficult to dissolve in water, not easily absorbed by crops. Do not