[98% NaClO3 ∙ CO(NH2)2 + 2% H3PO4· CO(NH2)2] - [25% NH3 + 75% H2O] - H2O   СИСТЕМАДА КОМПОНЕНТЛАРНИНГ ПОЛИТЕРМИК ЭРУВЧАНЛИГИ

Admin bo'lib kirish (www.admin.slib.uz)

Tizim sinov (TEST) rejimida ishlamoqda! Murojat uchun @slib_support

Eski talqinga o'tish link

13 феврал 2020

Asosiy til:Rus

[98% NaClO3 ∙ CO(NH2)2 + 2% H3PO4· CO(NH2)2] - [25% NH3 + 75% H2O] - H2O СИСТЕМАДА КОМПОНЕНТЛАРНИНГ ПОЛИТЕРМИК ЭРУВЧАНЛИГИ

Fan yo'nalishi:

5e44cec7aeb60.pdf

PDF

Ўзбекистон кимё журнали

Maqola chop etish see more

MAQOLA ANNOTATSIYASI

Background. Chemical regulation of plant growth and development can be carried out not only in the early stages of ontogeny, but also during the main periods of crop formation. The harvest of some crops does not have time to ripen before the onset of autumn unfavorable weather, which leads to a reduction in its quantity and a decrease in the quality of the crop. To accelerate the maturation in the pre-harvest period, agrochemical preparations are used: defoliants and desiccants. Defoliation is the artificial pre-harvest removal of plant leaves. After its carrying out by chemical substances - defoliants, nutrients are mixed from vegetative organs into generative ones - fruits and seeds. Purpose. For the physico-chemical substantiation of the process of obtaining such effective drugs, we were interested in studying the mutual influence of the components in the system [98% NaClO3 ∙ CO(NH2)2 + 2% H3PO4· CO(NH2)2] - [25% NH3 + 75% H2O] - H2O. Methodology. The determination of the chlorate ion was carried out by volume permanganatometric, sodium - method using flame photometric methods. Measurement of the viscosity of the solutions was carried out using a HPLC viscometer, the pH of the solutions was determined at pH meter FE 20 METTLER TOLEDO. Originality. Polythermal and "composition-properties" of the diagram are created on the basis of the study of solubility in a system involving water, sodium monocarbamidochlorate, carbamide phosphate and ammonia water. Findings. Based on polyterm binary systems and internal sections, a polythermic diagram of the system solubility was constructed [98% NaClO3 ∙ CO(NH2)2 + 2% H3PO4· CO(NH2)2] - [25% NH3 + 75% H2O] - H2O in the temperature range from -32.6 to 50.0°C. The polythermic solubility diagram demarcates the crystallization fields of ice, carbamide, sodium monocarbamidochlorate and ammonium phosphate. Keywords: solubility, system, diagram, concentration, defoliants, "composition-properties", crystallization temperatures, viscosity, density and pH of the medium. Highlights: - on the system, the crystallization fields of the components are delineated; - optimal technological parameters for obtaining a liquid defoliant were established.

MUALIFLAR

Teglar

Maqolani baholang

0

0 ta

Maqola idintifikatorlari

ROI:

https://eroi.uz/11.0030/A0220-0023

DOI:

Mavjud emas

Foydalanilgan adabiyotlar

Larson A.J., Gwathmey C.O., Hayes R.M. Cotton defoliation and harvest timing effects on yields, quality and net revenues // Journal Cotton Science -2002. - Vol.6. - P. 13-27.

Norton E.R. and H. Borrego. Evaluation of various materials for harvest preparation and defoliation in Sou-theastern Arizona. 2005. YElektronnyiyresurs:htp://cals.arizona.edu/pubs/crops/az1366/az13662b.pdf.

Edmisten K.L. Cotton defoliation. // North Carolina Cotton Information. Publ. AG-417. -2006 b. - P. 159-178.

Karademir E., Karademir C., Basbag S. Determinationthe effect of defoliation timing on cotton yield and quality // Journal Central Eur. Agrie. -2007. -Vol. 8. -Iss. 3. - P. 357-362.

Craig C. W075-Cotton defoliation timing // The University of Tennessee Agricultural Extension Service. - 2012. YElektronnyiy resurs: http://tennessee.edu/utk_agexcrop/88. (verified 27 Nov. 2012).

Fiziologiya rasteniy / N.D. Alehina, YU.V. Balnokin, V.F. Gavrilenko i dr. Pod red. I.P. Ermakova. - Moskva, "Akademiya", 2005. -640s.

Hossain M.A., Rahman M.M., Fakir M.S. Effect of defoliation on flower production and yield in cowpea // Bangladesh Journal of Crop Science - 2006. - Vol. 17. No.2. - P. 325-332.

Molodkin A.K., YEllert G.V., Ivanova O.M., Skotnikova G.A. O soedineniyah karbamida s kislotami. // ZHurn.neorgan.himii. - M. : Nauka. -1967. - T. 7. - Vyip. 4. - S. 947-957.

Luneva N.K., Petrovskaya L.I., RekashovaN.I. Termicheskie prevras`heniya sistemyi N3RO4- SO(NN2)2. // ZH. prikl. himii. - 2000. - No.10. - S. 1585-159.

Abramova G.V., Ryiskalieva A.K., Nurahmetov N.N., ZHakanbaeva A.K. Termohimicheskie svoystva ne-kotoryih amidkislot. Materialyi Mezhd. Nauchno-prakticheskoy konf. "Termodinamika i kinetika ravnovesnyih i neravnovesnyih himicheskih processov" // Vestnik KazNU. Ser.him. -2002. - No. 1.-S. 59-62.

Trunin A.S. Petrova D.G. Vizual`no-politermicheskiy metod / Kuybyishevskiy politehn. Ins-t. - Kuybyishev. 1977.-94s./ Dep. v VINITI ¹ 584-78.

Zdanovskiy A.B., Gallurgiya: -L.: Himiya. 1972. -572s.

GOST 12257-77. Hlorat natriya. Tehnicheskie usloviya. -M.: Izd-vo standartov, 1987. -129s.

Poluyektov N.S. Metodyi analiza po fotometrii plameni. -M.: Himiya. 1967.- 307s.

Udobreniya mineral`nyie. Metodyi analiza. 1 - 75 - GOST 20851. 4 - 75. - M.: Izd - vo standartov, 1977. - 56 s.

Klimova V.A. Osnovnyie mikrometodyi analiza organicheskih soedineniy M.: Himiya, 1975.-224 s.

Frolov YU.G Kurs kolloidnoy himii // Poverhnostnoe yavlenie i dispersnyie sistemyi. -M.: 1982. 117-124s.