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Manures behave similar to superphosphate in phosphorus accumulation in long-term field soils | ||
International Journal of Plant Production | ||
مقاله 5، دوره 5، شماره 2، تیر 2011، صفحه 135-146 اصل مقاله (169.93 K) | ||
نوع مقاله: Research Paper | ||
شناسه دیجیتال (DOI): 10.22069/ijpp.2012.727 | ||
نویسندگان | ||
Sh. Huang1؛ Y. Ma* 2؛ D. Bao1؛ D. Guo1؛ Sh. Zhang1 | ||
1Institute of Plant Nutrition, Resources and Environment, Henan Academy of Agricultural Sciences, Zhengzhou, Henan 450002, China. | ||
2Ministry of Agriculture Key Laboratory of Plant Nutrition and Nutrient Cycling, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China. | ||
چکیده | ||
Repeated application of manures to agricultural soils could cause the accumulation of phosphorus (P) in soils. However, it is unclear if manure P can behave similar to P in soluble fertilizers in accumulation Olsen-P (0.5 mol L-1 NaHCO3 at pH 8.5) in soils. A long-term wheat-maize rotation experiment was conducted to investigate the effects of repeated application of manures on P accumulation in soils. The results showed that excessive or residual P in soils led to increase of Olsen-P in soils, which could be predicted accurately by initial concentration of Olsen-P in soils, P fertilization rate, crop yield, soil pH and cultivation time. The effects of application of K fertilizers or maize straw to soils or replacement of maize with soybean in wheat cropping systems were not significant on soil Olsen-P accumulation. The accumulation rates of soil Olsen-P were governed by P application rates of soluble P fertilizers and/or manures. Similar trend of Olsen-P accumulation was found in soils with soluble P fertilizers only or plus manures P, which supplied evidence that behaviour of manure P in long-term field soils is similar to inorganic P fertilizers and are helpful for the best management of soil P in agricultural production and environment protection. | ||
کلیدواژهها | ||
Phosphorus؛ Accumulation؛ Long-term؛ soil | ||
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