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within the plant. sulfur is essential for protein synthesis and magnesium is required for the formation of chlorophyll. other necessary elements include ca, na, fe, mn, b, cu, zn and co. deficiencies in a particular soil can be treated by the addition of appropriate fertilizers. figure in the th century
nitrogen is taken up by most plants, other than legumes, in only two forms, as nitrate (no -) and ammonium (nh +) ions. under conditions in the uk, ammonium ions are rapidly oxidized via microbes in the soil to nitrate ions. these are absorbed by the roots of the plant, eventually forming amino acids...
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.: characters: -cyanopyridine, precipitated from the petroleum ether or ether, is needle crystal. it can sublimate, also can be soluble in alcohol, ether, chloroform, benzene and petroleum ether, slightly soluble in water. density: g/ ml, melting point: - °c, boiling point: °c, flash point: °c. main
uses: it is used for intermediates as medicine, food additives, feed additives, insecticide etc.. back home | about us | products | news | quality | nvestor | contact us | 中文版 copyright(c) , nantong acetic acid chemical co., ltd. all rights reserved. supported by chemnet chinachemnet toocle copyright...
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