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首页> 外文期刊>African Journal of Biotechnology >Liming increases alfalfa yield and crude protein content in an acidic silty loam soil
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Liming increases alfalfa yield and crude protein content in an acidic silty loam soil

机译：石灰提高酸性粉质壤土土壤的苜蓿产量和粗蛋白含量

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摘要

A three year field trial examined the effect of three hydrated lime (HL, Ca(OH)2) rates (0, 1.5 and 3 Mg HL ha-1) on yield and quality characteristics of alfalfa on an acid soil (pHwater?1:2.5?4.7) in Western Serbia. Lime was applied only once. Total dry mass yields of a new planting alfalfa (Medicago sativa?L.) increased up to 6500% by the treatments of HL, compared with the untreated control. Lime application significantly (P ≤ 0.05) increased the crude protein content of alfalfa, in comparison to the no limed control. Liming also significantly increased Ca, K, and P concentrations but decreased Mg, Fe, Mn, Zn, and Al concentrations in alfalfa tissue, compared with the control treatment. Alfalfa yield increase was attributed to the increase of Ca, P and K uptake. Furthermore, the low (1.5 Mg HL ha-1) and high (3 Mg HL ha-1) lime treatments increased soil pH even further by 0.9 and 1.5 pH units, respectively. The results suggest that an initial application of hydrated lime at a rate of 3 Mg HL ha-1may ameliorate soil acidity and increase the yield and quality characteristics of alfalfa at least over a 3-year period.
机译：一项为期三年的田间试验研究了三种熟石灰（HL，Ca（OH）2）比率（0、1.5和3 Mg HL ha-1）对酸性土壤（pHwater？1： 2.5？4.7）。石灰只施用了一次。与未处理的对照相比，通过HL处理，新种植的苜蓿（Medicago sativa？L。）的总干物质产量提高了6500％。与不撒石灰对照相比，撒石灰显着（P≤0.05）增加了苜蓿的粗蛋白含量。与对照处理相比，石灰还显着增加了苜蓿组织中的Ca，K和P浓度，但降低了Mg，Fe，Mn，Zn和Al浓度。苜蓿产量的增加归因于Ca，P和K吸收的增加。此外，低（1.5 Mg HL ha-1）和高（3 Mg HL ha-1）石灰处理分别进一步提高了土壤pH值0.9和1.5 pH单位。结果表明，至少在3年的时间内，以3 Mg HL ha-1的比例初始施用熟石灰可以改善土壤酸度，并提高苜蓿的产量和品质。

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