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首页> 外文期刊>Journal of plant nutrition and soil science >Wheat nutrition and growth as affected by humic acid-phosphate interaction
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Wheat nutrition and growth as affected by humic acid-phosphate interaction

机译：小麦营养和生长受腐殖酸 - 磷酸族相互作用的影响

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Low-grade phosphate rock correctly combined with humic acid (HA) has the capacity of single superphosphate (SS) in supplying P to growing wheat (Triticum aestivum L.). The aim of this study was to evaluate wheat dry matter, macro- and micronutrients accumulated in wheat shoot, and the P availability in a Typic Hapludox (Oxisol) under the following humic acid carbon (C-HA) concentrations: 0, 5, 10, 50, and 100 mg kg(-1), which were combined with two P sources, Araxa phosphate rock (APR) and SS. The experiment was carried out under greenhouse conditions. Firstly, soil samples were incubated with combinations of C-HA concentrations and P sources for 15 d; after that, wheat was grown in the pots for 43 d. Shoot dry matter (SDM), root dry matter (RDM), total dry matter (TDM), macro- and micronutrient uptake, and soil resin-P were determined. Addition of C-HA increased RDM growth in soils treated with APR and SS, and improved SDM growth under APR. Accumulation of P, S, Cu, Fe, Mn, and Zn increased in wheat shoots grown in soils treated with APR combined with C-HA concentrations. The addition of 50 mg kg(-1) of C-HA and APR increased RDM and macro- and micronutrient uptake and promoted greater production of SDM in comparison to biomass produced in soil not treated with HA. After wheat cultivation, resin-P contents in soil with APR decreased over C-HA concentrations, which is evidence of adequate supply of P to wheat by APR. The right combination of HA and APR leads to wheat growth and nutrient uptake equivalent to those found for SS.
机译：低级磷酸盐岩石正确地结合腐殖酸（HA）具有单磷酸（SS）的能力，供应P到种植小麦（Triticum aestivum L.）。本研究的目的是评估小麦芽中累积的小麦干物质，宏观和微量营养素，以及在以下腐殖酸碳（C-HA）浓度下的典型Hapludox（Oxisol）中的P可用性：0,5,10 ，50和100mg kg（-1），与两个p源，亚雪茄磷酸岩（APR）和SS组合。实验是在温室条件下进行的。首先，将土壤样品与C-HA浓度和P源的组合一起孵育15d;之后，小麦在盆中生长了43天。测定干燥物质（SDM），根干物质（RDM），总干物质（TDM），宏观和微量营养剂吸收和土壤树脂-P。通过APR和SS治疗的土壤中的C-HA增加RDM生长，并在4月下改善了SDM增长。 P，S，Cu，Fe，Mn和Zn的积累增加了4月份含有C-HA浓度的土壤中生长的小麦芽中。加入50mg kg（-1）的C-Ha和APR增加，RDM和微量营养素吸收增加，并促进了与未治疗的土壤中未治疗的土壤中产生的生物质相比，促进了SDM的更大产量。小麦栽培后，患有APR的土壤中的树脂-P含量超过C-HA浓度，这是3月份对小麦充分供应的证据。 HA和APS的合适组合导致小麦生长和营养吸收等同于SS的那些。

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