Paddy soils that support sustainable rice cultivation
نویسندگان
چکیده
منابع مشابه
An empirical model of soil chemical properties that regulate methane production in Japanese rice paddy soils.
To understand which soil chemical properties are the best predictors of CH4 production in rice paddy soils, a model was developed with empirical data from nine types of rice soils collected around Japan and anaerobically incubated at 30 degrees C for 16 wk in laboratory conditions. After 1, 2, 4, 8, and 16 wk of incubation, CO2, CH4, and Fe(II) were measured to understand soil organic matter de...
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Arsenic (As) accumulation in food crops such as rice is of major concern. To investigate whether phytoremediation can reduce As uptake by rice, the As hyperaccumulator Pteris vittata was grown in five contaminated paddy soils in a pot experiment. Over a 9-month period P. vittata removed 3.5-11.4% of the total soil As, and decreased phosphate-extractable As and soil pore water As by 11-38% and 1...
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Combined application of organic and inorganic amendments was known to play a significant role in improvement of soil properties. A field experiment was conducted to explore the effects of gypsum, farmyard manure and commercial humic acid application on the amelioration of salt affected (saline sodic) soil. During this study, soil pH, electrical conductivity, sodium adsorption ratio, responses o...
متن کاملHeavy metal contamination of paddy soils and rice (Oryza sativa L.) from Kocani Field (Macedonia).
This research focuses on the heavy metal contamination of the paddy soils and rice from Kocani Field (eastern Macedonia) resulting from irrigation by riverine water impacted by past and present base-metal mining activities and acid mine drainage. Very high concentrations of As, Cd, Cu, Pb and Zn were found in the paddy soils (47.6, 6.4, 99, 983 and 1,245 microg g(-1)) and the rice (0.53, 0.31, ...
متن کاملRice Uptake and Leaching of Tc in Different Paddy Soils Contaminated According to Two Contrasting Scenarios
Four different paddy soils collected around the Gyeongju nuclear site were treated with TcO4 solution under the assumption of two contrasting contamination scenarios. Scenario I (SN-I) is for a pre-transplanting deposition of Tc followed by plowing, whereas SN-II is for its deposition onto the water surface shortly after transplanting. Rice plants were grown in lysimeters in a greenhouse. Plant...
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ژورنال
عنوان ژورنال: TRENDS IN THE SCIENCES
سال: 1999
ISSN: 1884-7080,1342-3363
DOI: 10.5363/tits.4.3_30