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首页> 外文会议>International Conference on Heavy Metals in the Environment >Heavy metal content and yielding of Italian ryegrass cultivated in the soil intensively fertilized with municipal sewage sludges
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Heavy metal content and yielding of Italian ryegrass cultivated in the soil intensively fertilized with municipal sewage sludges

机译：用市政污水污水强化施肥的土壤中栽培的重金属含量和屈服的意大利黑麦草

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The paper contains results of yielding and heavy metal content in Italian ryegrass cultivated in the fourth year of investigations conducted to determine the effect of two sewage sludges and manure applied once (in the first year of the experiment) and four times in the 1~(st) to 4~(th) year of the experiment. A experimental design comprised 8 treatments in 4 replications. Treatment 1 was the control (without fertilization), whereas on treatment 2 exclusively mineral fertilizers were applied. In the first year of the experiment organic fertilization (two different sewage sludges and farmyard manure) were applied on treatments 3-8, whereas in the second, third and fourth year only on variants 6-8. It was done so to make possible checking the residual effect and the effect of cumulated doses of applied organic materials in the subsequent years. Over the next three years of the experiment, the soil in variants 3-5, which was not enriched with organic materials, received mineral fertilization. On the basis of obtained results it was found that four-year sewage sludges and manure fertilization positively affected the amount and quality of Italian ryegrass yield. Total yields obtained on treatments fertilized with organic materials were statistically significantly higher (by about 20%) than the yields obtained on the treatments receiving mineral fertilizers, and twice bigger as compared with the yield from the control variant. Heavy metals contents in tops of Italian ryegrass on treatments with mineral fertilizers (2-5) was significantly higher as compared with the variants receiving organic materials. In the case of cadmium difference reached up to 100%. Contents of the analyzed heavy metals in Italian ryegrass samples, except cadmium, did not exceed values critical for plants destined for animal feed.
机译：本文含有在第四年调查中培养的意大利黑麦草产量和重金属含量的结果，以确定两次污水污泥和粪肥施用一次（在实验的第一年）和1〜〜（ ST）到4〜（Th）的实验年份。实验设计包括4个复制中的8种治疗方法。治疗1是对照（没有受精），而在治疗中，应用2只应用矿物肥料。在实验的第一年有机施肥（两种不同的污水污泥和农家粪肥）应用于治疗3-8，而在第二次，第三年和第四年仅在6-8上。这样做是可以检查随后的施加有机材料累积剂量的残留效果和累积剂量的影响。在未来三年的实验中，在5-5的变体中的土壤，未富含有机材料，接受矿物施肥。在获得的结果的基础上，发现四年污水污泥和粪肥受到意大利黑麦草产量的数量和质量。与有机材料受精处理的总产量统计学上显着更高（约20％）比在接受矿物肥料的治疗中获得的产率，与来自对照变体的产率相比的两倍越大。与接受有机材料的变体相比，意大利黑麦草中的重质金属含量在含有矿物肥料（2-5）的治疗中显着提高。在镉差异的情况下达到100％。除镉外，意大利黑麦草样品中分析的重金属的含量没有超过用于动物饲料的植物关键的价值。

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