Three-nitrogen-combined fulvic acid-containing topdressing fertilizer and preparation method thereof

Abstract

The invention discloses a three-nitrogen-combined fulvic acid-containing topdressing fertilizer and a preparation method thereof. The topdressing fertilizer is prepared from the following raw materials by weight: 15-25 parts of potassium nitrate, 20-30 parts of calcium nitrate, 10-15 parts of ammonium bicarbonate, 3-5 parts of ammonium chloride, 40-60 parts of urea, 30-50 parts of fulvic acid, 0.5-1 part of trace elements, 8-12 parts of activated carbon, 2-4 parts of polyaspartic acid, and 1-2 parts of chitosan oligosaccharide. After application into soil, the three-nitrogen-combined fulvic acid-containing topdressing fertilizer can immediately provide plant growth needed nutrients for a long time, also can activate soil, enhance the soil fertility, realize sustainable, efficient and pollution-free agricultural production, and improve the quality of agricultural products.

Description

technical field [0001] 本发明属于肥料加工技术领域,具体涉及一种三氮合一含黄腐酸型追施肥及其制造方法。 Background technique [0002] 全球农业生产正朝着绿色农业、环保农业的方向发展,这是世界农业的发展趋势,也是中国农业可持续发展的出路。中国的耕地占世界总量的7%,却使用了占世界35%的化肥,中国在成为世界化肥生产与消费第一大国的同时也成为了第一浪费大国,长期大量施用化肥在给农作物增产的同时,也造成了严重的土壤、空气及水体污染。农作物中后期生长是一个非常旺盛生长时期,需要吸收的养分种类多,数量大,而种植时所施用的底肥也剩余不多,迫切需要进行追肥。追肥是作物施肥的重要组成部分,追肥在整体肥料用量中占到50%左右,我国现阶段对追肥的技术具有较深入的研究,但是对追肥品种的研究开发不够,现有追肥品种一般采用施用普通复合肥料的方式,氮磷钾比例不协调,肥料中大多含有磷元素,而实际使用中磷元素一般以底肥形式使用,追肥只适用于氮钾肥,这样造成了磷元素的浪费。产品氮养分单一,含有一种氮素(酰胺态氮)或二种氮素(硝态氮和铵态氮),容易发生由于同期氮养分释放过多过快,作物不能吸收造成的养分损失和环境污染。 [0003] 现代农业已朝着高产、优质、高效、环保的方向前进,发展新型肥料是发展农业必不可少的条件之一。当今国内外肥料发展的总趋势是“四化二结合”:即多元高效化、复合专用化、长效多功能化和绿色环保化;有机和无机相结合,这种适应现代农业用于绿色农产品生产的多功能肥料,它与无机氮肥的不同之处主要是既要考虑使作物增产,还要考虑改良土壤,既要提高农产品的品质,又要友好环境。针对上述问题,开发含有多种氮素、有机质和中微量元素的追肥是实现肥料高效利用,减少投入,保护环境,改良土壤的有效途径。 Contents of the invention [0004] 本发明提供了一种含有铵态氮、硝态氮、酰胺态氮三种氮素,养分利用率高的三氮合一含黄腐酸型追施肥。 [0005] 本发明还提供了该三氮合一含黄腐酸型追施肥的制造方法。 [0006] 为了解决上述技术问题,本发明采用的技术方案如下: [0007] 一种三氮合一含黄腐酸型追施肥,是由以下重量份的原料制得的:硝酸钾15-25份、硝酸钙20-30份、碳酸氢...

AI Technical Summary

Problems solved by technology

Topdressing is an important part of crop fertilization. Topdressing accounts for about 50% of the total fertilizer consumption. At present, my country has conducted in-depth research on topdressing technology, but the research and development of topdressing varieties is not enough. Existing topdressing varieties generally use In the way of ordinary compound fertilizers, the ratio of nitrogen, phosphorus and potassium is not coordinated, and most of the fertilizers contain phosphorus elements. In actual use, phosphorus elements are generally used in the form of base fertilizers, and topdressing is only suitable for nitrogen and potassium fertilizers, which causes a waste of phosphorus elements.

The product has a single nitrogen nutrient, containing one type of nitrogen (amide nitrogen) or two types of nitrogen (nitrate nitrogen and ammonium nitrogen), and is prone to nutrient loss and environmental pollution

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