WO2018064957A1 - 一种纳米碳溶胶用于制造稳定性肥料的方法 - Google Patents

一种纳米碳溶胶用于制造稳定性肥料的方法 Download PDF

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WO2018064957A1
WO2018064957A1 PCT/CN2017/104380 CN2017104380W WO2018064957A1 WO 2018064957 A1 WO2018064957 A1 WO 2018064957A1 CN 2017104380 W CN2017104380 W CN 2017104380W WO 2018064957 A1 WO2018064957 A1 WO 2018064957A1
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fertilizer
nano
carbon sol
nitrogen
nano carbon
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PCT/CN2017/104380
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English (en)
French (fr)
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邢文英
左力刚
肖越
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北京奈艾斯新材料科技有限公司
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Priority to US16/088,809 priority Critical patent/US10954171B2/en
Publication of WO2018064957A1 publication Critical patent/WO2018064957A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C9/00—Fertilisers containing urea or urea compounds
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D9/00—Other inorganic fertilisers
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C05G3/90—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting the nitrification of ammonium compounds or urea in the soil

Definitions

  • the invention discloses a method for preparing a stable fertilizer by using a nano carbon sol as a fertilizer synergist, and belongs to the field of stable fertilizer synergists.
  • nano-carbon sol is used for crop growth, and crops have early and long-term growth; multi-soil multi-crot test confirms nanometer Carbon sol has the effect of promoting crop yield increase. It has been confirmed by standard test methods that the nano-carbon sol has obvious effects as an inhibitor of ammonium nitrogen nitration and can be used as a synergistic fertilizer synergist.
  • Stable fertilizer refers to the addition of a urease inhibitor and/or a nitrification inhibitor through a certain process.
  • a class of nitrogenous fertilizers with a prolonged fertilizer period As is known to all, China has become the world's largest producer and consumer of fertilizers, with a fertilizer application rate of 60 million tons per year. However, China's fertilizer utilization rate is only about 33% on average, far lower than the level of developed countries in the world. Excessive and unreasonable fertilization has triggered a series of environmental and agricultural product safety issues such as eutrophication of water bodies and soil compaction. The use of nanocarbon for stable fertilizers is of great significance for improving the efficiency of fertilizers.
  • the combination of nano-carbon sol and fertilizer shows the characteristics of stable fertilizer.
  • the elemental carbon and required elements required for plant growth stimulate the absorption of nutrients in crops and improve the growth resistance of the crops;
  • the third is to improve the quality of agricultural products; such as the improvement of soluble substances in tomatoes and fruits, and the sweetness of the taste.
  • the nano-carbon stabilized fertilizer has a low cost relative to the coated slow-release fertilizer, and the effect is good and easy to promote.
  • nano-carbon sol only increases the cost of common fertilizer by about 2-3%, while the coated slow-release fertilizer increases the cost by more than 1-2 times. Therefore, the development of nano carbon stabilized fertilizer It can solve the problems of low fertilizer utilization rate and non-point source environmental pollution, and it is of great significance to reduce the investment in petrochemical energy and realize zero growth of chemical fertilizer application and sustainable development of agricultural green.
  • the invention relates to a nano carbon sol as a fertilizer synergist, characterized in that: the nano carbon sol has a pH value of ⁇ 2.2; the conductivity is 2800-3400 ⁇ s/cm; and the nano carbon sol carbon mass percentage reaches 0.57-2%, Particle size is ⁇ 100nm; potential difference is -30 ⁇ 35mV;
  • the nano-carbon sol is added as a synergist in the nitrogen-containing fertilizer in an amount of 1.05-10% by weight of the nitrogen-containing fertilizer.
  • the nano-carbon sol additive acts on the nitrogen-containing fertilizer as one or more of urea, nitrogen-containing compound fertilizer, and fertilization.
  • the nano-carbon sol crop is added during the growth process, or added in the nitrogen fertilizer production process.
  • the nano-carbon sol content is 0.57-2% or concentrated to 8-10% by mass, and fully contacted and mixed. Drying, drying temperature 50-65 ° C, cooling, packaging.
  • the process directly adds the nano-carbon sol without adding an aqueous solution, and the amount of the fertilizer synergist is 1.05-10% of the weight of the fertilizer.
  • the nano-carbon sol is added as a synergist in the nitrogen-containing fertilizer by 1.05-10% of the weight of the fertilizer, and the pH of the nano-carbon sol is 2.2.
  • the invention discloses that the nitrification inhibition rate of the nano-carbon sol nitrogen fertilizer reaches 6.3-6.8%, and the nitrification inhibition rate of the nitrogen-containing compound fertilizer reaches 19-25%, and is tested by the Shanghai Chemical Industry Research Institute Testing Center according to the national standard "Stable Fertilizer Detection". When the nitrification inhibition rate reaches 6% or more, it meets the standard of stable fertilizer synergist.
  • Nano-carbon sol can be used alone in the growth process of crops, or can be added as a nitrogen-containing fertilizer synergist in the production process.
  • the carbon content of nano-carbon sol is preferably 0.57-2%; the concentration of concentrate can reach 8-10%.
  • the invention discloses a nano-carbon sol which is tested by the Environmental and Health-related Product Safety Institute of the Chinese Center for Disease Control and Prevention, and is “an actual non-toxic grade” product, and is an environmentally friendly fertilizer synergist. It will not cause any residual harm to soil and crops.
  • the nano-carbon sol of the present invention is specifically referred to as a pure carbon material and does not cause soil pollution. Unlike dicyandiamide (DCD), dicyclohexylamine, 2-diethylaminoethanol, phenacetin and other harmful substances, there is a risk of residual compounds.
  • DCD dicyandiamide
  • dicyclohexylamine 2-diethylaminoethanol
  • phenacetin and other harmful substances
  • the cost of addition is low: the increase in the cost of nano-carbon sol addition is only 2% -3% of the price of ordinary fertilizer.
  • the sustained-release coated fertilizer increases the processing cost by 50%-1 times.
  • the invention discloses a nano carbon sol as a fertilizer synergist to stably supply fertilizer nutrients, and the effect of increasing yield is obvious: the crop is not deficient in fertilizer in the later stage, and the average yield increase of the crop is 5%-18%; the utilization rate of the fertilizer can be improved.
  • the present invention is compared with the same type
  • the object of the present invention is different.
  • the present invention specifically refers to the action on nitrogen-containing fertilizers, and does not specifically refer to the action of carbon-containing fertilizers.
  • the present invention specifically refers to the nanocarbon sol inhibiting ammonium nitrogen nitration, which is different from other urease inhibitors.
  • the nano-carbon sol of the present invention is specifically referred to as a pure carbon material and does not cause soil pollution.
  • Ammonia stabilizers other than dicyandiamide (DCD), dicyclohexylamine, 2-diethylaminoethanol, and phenacetin contain harmful substances, and there is a risk of residual compounds.
  • the nanocarbon sol of the present invention is completely soluble in water as a liquid, and is different from a compound such as dicyandiamide (DCD) which is slightly soluble in water and a solid nanocarbon material.
  • DCD dicyandiamide
  • the nanocarbon sol disclosed in the present invention specifically refers to a pH value of ⁇ 2.2 and a potential difference of -35 mV, which is different from other nano carbon materials having a pH above 2.5.
  • the present invention discloses a nano-carbon sol as a nitrogen-containing fertilizer synergist, and the addition amount in the nitrogen-containing fertilizer is 1.05-10% of the total weight of the fertilizer, which is different from the total weight of the carbon-containing fertilizer added by other patents. 1%, a range of 0.1-0.5% is added to the total weight of the compound fertilizer.
  • the invention discloses that the particle size of the nano-carbon sol material used in the nitrogen-containing fertilizer is ⁇ 100 nm, which is different from other application products >100 nm range.
  • the present invention specifically refers to a pure carbon nano-sized sol, and does not add any species, potassium-containing compounds, chemical fertilizers, trace elements, organic compounds, fly ash, slag, waste motor oil, rosin and the like.
  • nano-carbon sols are broad-spectrum and highly adaptable, and are suitable for use in field crops such as corn, rice, soybeans, cash crops such as tobacco, vegetables, and flowers, fruit trees, etc., showing good yield-increasing effects. Fertilization under conditions reduces fertilizer use by 10%, yield does not affect yield, and has the effect of improving the quality of agricultural products.
  • test results of the application of nano-carbon urea on corn crops in Inner Mongolia Bameng Academy of Agricultural Sciences in 2016 are as follows:
  • Nano-carbon urea is supplied by Beijing Nai Si Si New Material Technology Co., Ltd., the carbon content of nano-carbon urea is 46%, the mass of nano-carbon sol is 0.57%, the amount of nano-carbon sol is 10% of the weight of the fertilizer, and the color is gray.
  • Test site Fangziqu Experimental Station, Bayannaoer Institute of Agriculture and Animal Husbandry.
  • the cells are randomly arranged in groups, 5 treatments, 4 repetitions, 16 plots, and film planting.
  • the results are as follows:
  • nano-carbon has a significant effect on corn production.
  • a urea-added nano-carbon sol test was carried out, and the amount of nano-carbon added was 10% of the weight of the fertilizer.
  • the nano-carbon urea increased the yield by 10.5% compared with the application of ordinary urea; In the case of %, the yield is still increased by 9.2%; in the case of reducing the nitrogen fertilizer by 20%, the yield is slightly reduced, and the yield reduction is 2%.
  • nano-carbon has obvious effects in improving nitrogen utilization rate, reducing fertilizer and reducing nitrogen. It is of great significance for improving production and quality, reducing agricultural chemical input and reducing environmental pollution pressure. It is in line with the national fertilizers and pesticides proposed in the 13th Five-Year Plan. Zero growth development strategy requirements.
  • Planting crops tomato variety Tianma 54
  • the base fertilizer includes potassium sulphate weight 50Kg/mu, diammonium phosphate 200Kg/mu, chicken manure 4 square/mu; control compound fertilizer (24-12-18), treatment for rushing fertilizer topdressing four times, each time 5kg/ mu.
  • Topdressing Topdressing on February 25, March 30, April 20, and May 10.
  • test plot adopts four repetitions, and the separate harvesting is separately calculated.
  • the average yield of tomato was 3298 kg/mu
  • the average yield of nano-carbon sol 10% fertilizer treatment was 3671 kg/mu, which was 11.2% higher than that of conventional fertilization (equal nutrient); Transplanting, root treatment and topdressing using nano-carbon sol
  • the average yield of 20% fertilizer weight and fertilization was 3,707 kg/mu, an increase of 12.4%.
  • the preparation of rushing fertilizer added 10% by weight of nano-carbon sol the cost per kg of fertilizer increased by 1 yuan, 20 kg per acre of fertilization, increased yield of 373 kg / mu of tomatoes, 3 yuan per kg of tomatoes, produced The ratio is 1:56, and the benefit is higher. Adding 20% nano-carbon sol to prepare for fertilization, the ratio of production to investment decreased to 1:20, and the addition of 10% was more reasonable.
  • Test site Heilongjiang Academy of Agricultural Sciences Test Site
  • Nano-urea 46-0-0
  • heavy superphosphate (0-43-0)
  • potassium sulfate 0-0-50.
  • the content of nano-carbon sol solute is 0.57%, and the added amount is 10% of the weight of urea.
  • nanocarbon as a fertilizer synergist has a significant effect of improving fertilizer efficiency and improving fertilizer utilization.
  • the nano-carbon urea has obvious yield increase effect, and the yield increase is up to 20%.
  • the treatment nitrogen is reduced by 10%, the yield is basically the same as the conventional fertilization, which is slightly lower, indicating that the nano-carbon has improved fertilizer utilization. The effect of the rate.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Pest Control & Pesticides (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Fertilizers (AREA)

Abstract

一种纳米碳溶胶作为肥料增效剂的应用，其特征在于:所述的纳米碳溶胶pH值<2.2；电导率2800-3400μs/cm；纳米碳溶胶碳质量百分含量达到0.57-2％，粒度为＜100nm；电位差为-30～35mV；纳米碳溶胶作为增效剂在含氮肥料中的添加量为含氮肥料重量的1.05-10％。纳米碳溶胶农作物生长过程中添加，或者在含氮肥料生产过程加入。本发明可使肥料养分平稳供给，增产效果明显：作物后期不缺肥，作物平均增产幅度5％-18％；可使化肥利用率提高。本发明硝化抑制率达到6.3-6.8％，含氮复合肥硝化抑制率达19-25％，是环境友好型肥料增效剂，不会对土壤、农作物产生任何残留危害。

Description

一种纳米碳溶胶用于制造稳定性肥料的方法 技术领域
本发明公布一种纳米碳溶胶作为肥料增效剂用于制造稳定性肥料的方法，属于稳定性肥料增效剂领域。
背景技术
北京奈艾斯新材料科技有限公司(以下简称公司)的科技工作者经过近多年的试验，发现纳米碳溶胶用于作物生长，作物有早发快长的现象；多地多作物试验证实了纳米碳溶胶具有促进作物增产效果。经过标准试验检测方法证实，纳米碳溶胶作为抑制铵态氮硝化作用方面的效果明显，可作为稳定性肥料增效剂。稳定性肥料是指经过一定工艺加入脲酶抑制剂和(或)硝化抑制剂，施入土壤后能通过脲酶抑制剂抑制尿素的水解，和(或)通过硝化抑制剂抑制铵态氮的硝化，使肥效期得到延长的一类含氮肥料。众所周知，我国已成为世界最大的化肥生产国和消费国，化肥施用量达每年6000万吨(折纯)。然而，我国化肥利用率平均仅33％左右，远远低于世界发达国家水平，过量、不合理的施肥引发了水体富营养化、土壤板结等一系列环境及农产品安全问题。将纳米碳用于稳定性肥料，对于提高化肥效益有重要意义。纳米碳溶胶与肥料结合表现出稳定性肥料的特性，一是可以提高肥料利用率；减少施肥的数量，不会因局部肥料浓度过高对作物根系造成伤害；二是改善土壤养分平衡，补充了植物生长所需的元素碳及所需元素，刺激了作物生养分吸收，提高了生长抗逆性能；三是改善农产品品质；如蕃茄、水果可溶固性物提高，口感沙甜。四是纳米碳稳定性肥料相对包膜缓释化肥成本低，效果好，易推广。纳米碳溶胶作为肥料添加剂只将普通肥料成本提高2-3％左右，而包膜缓释肥将成本提高1-2倍以上。因此，发展纳米碳稳定性肥料 可以较好地解决了肥料利用率低、面源环境污染等问题，对减少节约石化性能源投入，实现我国化肥施用零增长和农业绿色可持续发展，有重要的意义。
发明内容
一种纳米碳溶胶作为肥料增效剂的应用，其特征在于:所述的纳米碳溶胶pH值<2.2；电导率2800-3400μs/cm；纳米碳溶胶碳质量百分含量达到0.57-2％，粒度为＜100nm；电位差为-30～35mV；
纳米碳溶胶作为增效剂在含氮肥料中的添加量为含氮肥料重量的1.05-10％。
纳米碳溶胶添加剂作用于含氮肥料为尿素、含氮复合肥、冲施肥等一种或几种。
纳米碳溶胶农作物生长过程中添加，或者在含氮肥料生产过程加入，加入时纳米碳溶胶质量百分含量为0.57-2％或者浓缩成质量百分含量为8-10％，充分接触混匀、烘干，烘干温度50-65℃，冷却、包装。
加工过程直接加入纳米碳溶胶，无需添加水溶液，作为肥料增效剂添加量为肥料重量的1.05-10％。
本发明特点
1、纳米碳溶胶作为增效剂在含氮肥料中的添加量为肥料重量的1.05-10％，纳米碳溶胶pH值为2.2。
2、本发明公开一种纳米碳溶胶氮肥硝化抑制率达到6.3-6.8％，含氮复合肥硝化抑制率达19-25％，经上海化工研究院检测中心参照国家标准《稳定性肥料检测》检测，当硝化抑制率达到6％以上就符合稳定性肥料增效剂标准。
3、纳米碳溶胶可以农作物生长过程中单独使用，也可以作为含氮肥料增效剂在生产过程加入，纳米碳溶胶碳含量优选0.57-2％；浓缩剂可达8-10％，
4、本发明公开一种纳米碳溶胶经中国疾病预防控制中心环境与健康相关产品安全所检测，“属于实际无毒级”产品，是环境友好型肥料增效剂， 不会对土壤、农作物产生任何残留危害。
5、本发明纳米碳溶胶特指为纯碳物质，不会造成土壤污染。不同于双氰胺(DCD)、二环己胺、2-二乙氨基乙醇、苯乙晴等含有害物质，存在残留化合物风险。
6、添加成本低：纳米碳溶胶添加增加成本只有普通肥料价格的2％-3％。而缓释包膜肥料增加加工成本达50％-1倍以上。
7、本发明公开一种纳米碳溶胶作为肥料增效剂可使肥料养分平稳供给，增产效果明显：作物后期不缺肥，作物平均增产幅度5％-18％；可使化肥利用率提高。
本发明与同类比较
1、本发明作用对象不同，本发明特指在含氮肥料上作用，不特指在含碳肥料的作用。
2、本发明特指纳米碳溶胶在抑制铵态氮硝化作用，不同于其他脲酶抑制剂。
3、本发明纳米碳溶胶特指为纯碳物质，不会造成土壤污染。不同于双氰胺(DCD)、二环己胺、2-二乙氨基乙醇、苯乙晴等氨稳定剂含有害物质，存在残留化合物风险。
4、本发明纳米碳溶胶为液体完全溶于水，不同于微溶于水的双氰胺(DCD)等化合物和固态的纳米碳材料。
5、本发明公开纳米碳溶胶特指pH值为＜2.2，电位差为-35mV，不同于其他pH在2.5以上的纳米碳材料。
6、本发明公开纳米碳溶胶作为含氮肥料增效剂，在含氮肥料中的添加量为肥料总重量的1.05-10％，不同于其他专利所指在含碳化肥总重量中添加0.1-1％、在复合肥总重量中添加0.1-0.5％的范围。
7、本发明公开在含氮肥料中的应用纳米碳溶胶材料的粒径为＜100nm，不同于其他应用产品>100nm范围。
8、本发明特指为纯碳纳米级溶胶，不添加任何菌种、含钾化合物、化肥、微量元素、有机化合物、粉煤灰、矿渣、废机油、松香等物质。
经多年研究发现：纳米碳溶胶具有广谱性和高度适应性，适合大田作物如玉米、水稻、大豆，经济作物如烟草、蔬菜，以及花卉、果树等使用，表现出良好的增产效果，在同等条件下施肥减少肥料使用量10％，产量不会影响产量，并有改善农产品的品质的效果。
具体实施方式
例证一、
内蒙古巴盟农科院2016年度在玉米作物上开展的纳米碳尿素施用效果试验结果如下：
由北京奈艾斯新材料科技有限公司提供纳米碳尿素，纳米碳尿素含量氮46％，纳米碳溶胶溶质量0.57％，纳米碳溶胶添加量为肥料重量的10％，颜色：灰色。
玉米品种：西蒙568，
实施地点
试验地点：巴彦淖尔市农牧业科学研究院园子渠试验站。
小区随机区组排列，5个处理，四次重复，16个小区，覆膜种植。取得效果如下：
表1 纳米碳尿素在玉米施用效果
Figure PCTCN2017104380-appb-000001
通过在2014、2015年纳米碳溶胶在玉米作物施用，证明纳米碳对玉米作用有明显的增产效果。2016年在此基础上开展了尿素添加纳米碳溶胶试验，试验纳米碳添加量为肥料重量的10％，经过田间测产表明：纳米碳尿素与施用普通尿素比较，增产10.5％；在减少氮肥10％的情况下，仍增产9.2％；在减少氮肥20％的情况下，略有减产，减产幅度在2％。说明纳米碳在提高氮肥利用率、节肥减氮方面效果十分明显，对于提高产量与品质，减少农业化学品投入，减少环境污染压力有重要意义，符合国家“十三五”提出的化肥、农药零增长的发展战略要求。
例证二
1、天津市武清区西红柿肥效试验
试验地点：天津市武清区黄花店镇
种植作物：西红柿品种天麻54
定植：西红柿定植2016年1月中旬
肥料施用：底肥包括硫酸钾重量50Kg/亩，磷酸二铵200Kg/亩，鸡粪4方/亩；对照为复合肥(24-12-18)，处理为冲施肥追肥四次，每次5kg/亩。
追肥：分别于2月25日、3月30日、4月20日、5月10日追肥。
对照：常规施肥复合肥(N:p2o5:k2o 24-12-18)
处理1：冲施肥(N:p2o5:k2o 24-12-18)+10％纳米碳溶胶混配
处理2：冲施肥(N:p2o5:k2o 24-12-18)+20％纳米碳溶胶混配
试验小区采用四次重复，分次采摘分别计产。
10号温室施入纳米碳冲施肥情况表
Figure PCTCN2017104380-appb-000002
Figure PCTCN2017104380-appb-000003
Figure PCTCN2017104380-appb-000004
14号温室施入纳米碳冲施肥情况表
Figure PCTCN2017104380-appb-000005
Figure PCTCN2017104380-appb-000006
Figure PCTCN2017104380-appb-000007
武清区西红柿肥效试验结果
Figure PCTCN2017104380-appb-000008
Figure PCTCN2017104380-appb-000009
西红柿经过十次采摘计产统计分析：西红柿习惯施肥平均产量3298公斤/亩，纳米碳溶胶10％肥料重量处理冲施肥平均产量3671公斤/亩，比习惯施肥(等养分比较)增产11.2％；苗期移栽占根处理加追肥采用纳米碳溶胶 20％肥料重量冲施肥平均产量3707公斤/亩，增产12.4％。从经济效益分析，制备冲施肥添加10％重量的纳米碳溶胶，每公斤肥料成本增加1元钱，每亩施用20公斤冲施肥，增产西红柿373公斤/亩，以每公斤西红柿3元计，产投比为1：56，效益较高。添加20％的纳米碳溶胶制备冲施肥，产投比下降到1：20，10％的添加较为合理。
案例三、
黑龙江农科院大豆试验
试验地点：黑龙江省农科院试验场
委托单位：黑龙江省农科院植物营养与环境所
1.试验目的
明确纳米肥料在大豆和水稻上的应用效果及氮肥利用率。
2.试验原材料：
纳米尿素(46-0-0)，重过磷酸钙(0-43-0)，硫酸钾(0-0-50)。纳米碳溶胶溶质含量0.57％，添加量为尿素重量的10％
3.试验方法
大豆采取盆栽试验，
4.大豆试验
盆栽试验每盆3株，设六次重复。氮磷钾比例为5:3.5:3,试验结果如下：
黑龙江大豆试验表
Figure PCTCN2017104380-appb-000010
Figure PCTCN2017104380-appb-000011
从试验结果看出，纳米碳作为肥料增效剂，有显著提高肥效，提高化肥利用率的效果。纳米碳尿素与等氮量的尿素配方肥相比，增产效果明显，增产达20％；当处理氮素降低10％，产量基本与常规施肥相差不多，略有降低，说明纳米碳有提高肥料利用率的效果。

Claims (3)

  1. 一种纳米碳溶胶作为肥料增效剂的应用，其特征在于:所述的纳米碳溶胶pH值<2.2；电导率2800-3400μs/cm；纳米碳溶胶碳质量百分含量达到0.57-2％，粒度为＜100nm；电位差为-30～35mV；
    纳米碳溶胶作为增效剂在含氮肥料中的添加量为含氮肥料重量的1.05-10％。
  2. 根据权利要求1所述的应用，纳米碳溶胶添加剂作用于含氮肥料为尿素、含氮复合肥、冲施肥一种或几种。
  3. 根据权利要求1所述的应用，纳米碳溶胶农作物生长过程中添加，或者在含氮肥料生产过程加入，加入时纳米碳溶胶质量百分含量为0.57-2％或者浓缩成质量百分含量为8-10％，充分接触混匀、烘干，烘干温度50-65℃，冷却、包装。
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