High nitrogen content, straight ammonium nitrate fertilizers — Determination or oil retentiondoi:ISO 5313:1986该方法的结果是对材料孔隙度的测量.本方法适用于不含可溶于瓦斯油的物质,且为粒状或颗粒状的物质.它包括在规定的时间内将试验部分完全浸入瓦斯油中,然后在规定的条件下排空和去除多余的瓦斯油,并测量...
4-yl phosphorothioate), imidacloprid [1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylideneamine] and lindane (1,2,3,4,5.6-hexachlorocyclohexane) treatments on ammonium, nitrate, and nitrite nitrogen and nitrate reductase enzyme activities were determined in groundnut (Arachis hypogaea L.) ...
Both ammonium nitrogen and nitrate nitrogen are available nitrogen sources for crops absorbingdirectly.The classical experiments during 1930s show that: the fertilizer efficiencies of two nitrogen sources are equivalence,but they have the differences in different conditions.Based on discussion of the absorp...
Ammonium nitrate labeled either as 15NH4-N or 15NO3-N and applied at 50, 100, or 200 kg N ha–1 was evaluated. Microplots (1.06 m2) were established in the main N plots for 15N fertilizer application, and main plots were used to determine grain yield. After the crop harvest, ...
it is an essential element of life. it is found in nitrates and nitrites in soil and water. all these substances are part of the nitrogen cycle and interconnected. industrial companies emit nitrogen extensively, increasing nitrite and nitrate content in the ground and water, being the consequence...
Thecontentoforganic matter,nitrate-nitrogen,water solublesaltionsandtotalpotassiumdroppedmarkedlyinwindwardslope. 迎风坡有机质、硝态氮、盐分离子以及全钾离子的含量明显降低,土壤存在一定贫瘠、退化现象; www.cnak.net.cn 10. Theeffectsof differentmeasuresonaccumulationandleachingofsoilnitratenitrogenwasstudiedingre...
anaerobic tower was not stable, for theprocess was affected by temperature, pH, mixing, and other factors. After first- oxidation and second-oxidation, COD content increased, maybe caused by the decomposition of the macromolecular and refractory matters in the leachate after acidification treatment, ...
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Type Ammonium Nitrogen Fertilizer Einecs No. 231-984-1 CAS-No. 7783-20-2 Density 1.769 g/cm3 (20 °c) Solubility in Water 74.4 G/100 Ml (20 °c) Critical Relative Humidity 79.2% (30 °c) Ld50 2840 Mg/Kg, Rat (Oral) Flash Point Non-Flammable Nitrogen Content ...
The nitrate content in waters is usually low but can rise to appreciable levels in farming wastewater as a result of soil fertilization. Usually nitrites are present in very low concentration since these are rapidly oxidized to nitrates, while nitrite can be found in wastewaters from the ...