IPI International Potash Institute
IPI International Potash Institute

研究报告: e-ifc No. 43, December 2015

法国的油菜田。照片拍摄:P.Dugast

在法国油菜和冬小麦上施用杂卤石作为硫源肥料的效果报告

Dugast, P.(1)
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摘要

Polysulphate™(英国克利夫兰钾肥有限公司生产)主 要成分是天然矿物质杂卤石。杂卤石是在海洋蒸发沉积 时生成,它由K2O、SO3、MgO、CaO组成,其含量分别为 14%、48%、6%、17%。缺硫(S)已被认为是在世界上许多 地区作物生产的限制因素,特别是在芸苔属植物和谷类作 物上。本研究的目的是评估杂卤石肥料和通常施用的硫肥 相比,对常见的适耕作物??油菜(Brassica napus L.)和 冬小麦(Triticum aestivum)生长性能的影响。试验于2013年和2014年在法国东北部的两个试验点进行,分别代表沙 壤土和浅钙质土壤。补充硫素导致了油菜产量的明显增 加,尤其是在浅钙质土壤上产量增加更明显。然而,本试 验中硫素对冬小麦产量的影响微不足道,这可能归因于土 壤中可用的硫素是充足的。杂卤石的性能与那些得到确认 的硫肥相当,不过有必要进行进一步的经济评估。

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