The developed potash ores, including Central Asian ores, are mainly represented by sylvinites (KCI + NaCl), which serve as raw materials for the production of the main type of potash fertilizers, potassium chloride.
The main aim of the research is to deal with the influence of the nutritions regime to the technological indexes which show the quality of the grain Polovchanka, the sort of winter wheat, in conditions of light grey earth soil in Kashkadarya Province.
The results of determining the strength of granules, hygroscopic point, sorption kinetics of water vapor and sorption moisture capacity of NS-fertilizers obtained by mixing melt ammonium nitrate with powdered natural gypsum (PG) and (NH4)2SO4.
The purpose of the research is to develop measures for the protection of the Zeravshan river, which is used as an industrial and drinking water supply for the population of several regions of the Republic. Studies have established that the main source of river pollution is industrial enterprise "Navoiazot", which produces mineral fertilizers for needs of agriculture. Discharge of wastewater into the water, leads to pollution of water, and the quality does not correspond to GOST 951:2011 "Sources of centralized drinking water supply. Hygienic, technical requirements and selection rules". At the same time, harmful chemicals are found in the water of the Zeravshan river, which are 2-9 times higher than the MPC installed on them. The medium term forecast showed that by 2030 the ecological state of the Zeravshan river will not be improved, due to the fact that the production of mineral fertilizers is planned to be increased. In this regard, recommendations on the protection of the Zeravshan river have been developed, which will help to improve the monitoring of the state of the water body and improve the conditions of water use of the population
Паст сифатли, юқори карбонатга эга бўлган Марказий Қизилқум (МҚ) фосфоритлари мамлакатимизнинг асосий фосфат хом ашёси ҳисобланади ва улардан турли даражада фосфор тутган оддий ва комплекс ўғитлар ишлаб чиқарилади. Ушбу фосфоритлар асосий компонент (Р2О5) бўйича жуда камбағал. Мазкур фосфат хом ашёси (ФХА) захираларининг катталигига қарамай, ундаги Р2О5 нинг миқдори ўртача 16,2% га тенг. Ҳозирги кунда фосфоритлардан фойдаланишнинг турли усуллари мавжуд: термик бойитиш, тўғридан-тўғри кислотали ва турли реагентлар билан қайта ишлаш ва бошқалар. Бугунги кунда кенг қўлланилаётган усуллардан бири бу фосфоритларни сульфат кислотали қайта ишлашдир.
Бугунги кунда қишлоқ хўжалиги тармоқларида ерларда фойдаланишни такомилаштириш бизннг асосий вазифамиздир. Ушбу мақола ерлардан оқилона ва самарали фойдаланиш хамда Жиззах вилояти Бахмал туманида интенсив боғларни жойлаштириш ва интенсив боғларни мунтазам сонини ошириб боришда бир қанча таклиф ва тавфсиялар бериб ўтилган.
In this work, cotton gin waste – CGW-phosphorus composts based on the waste of CGW and deposit Guliob phosphorite (GPh) were prepared, with wide mass ratios of CGW : GPh = 80 : 20; 75:25; 70 : 30; 65:35; 60 : 40; 55:45; 50 : 50; 45:55 and 40:60. The kinetics of the conversion of indigestible forms of phosphorus and calcium into a form assimilable for plants in poor GPh has been studied. It has been shown that an increase in the mass fraction of phosphate raw materials in relation to CGW leads to an increase in the content of the total form of phosphorus pentoxide in composts, but to a decrease in the relative content of the assimilable form of P2O5 and CaO. The longer the exposure time of CGW-phosphorite composts, the more forms of phosphorus and calcium digestible for plants.