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EUCALYPTUS INICIAL GROWTH ON HUMIC CAMBISOL WITHAPPLICATION OF LIMESTONE, GYPSUM, AND LIME MUD

机译:养殖山谷的桉树有害石灰石,石膏和石灰泥的应用

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摘要

The high demand for forest products in Brazil estimates a 2 million hectares increase in reforestation areas overthe next 10 years, highlighting Eucalyptus species. However, these crops usually occur in acid soils that needcorrection to achieve high productivity. Besides limestone, lime mud, a residue from the cellulose industry, andgypsum can also be used as correctives, but there are doubts about doses and ways of application with the bestresults. Thus, were evaluated the soil chemical attributes, foliar nutrient content, and initial growth of aEucalyptus dunnii Maiden crop in response to the application of limestone, lime mud, and gypsum in differentdoses and ways of applications, on a Humic Cambisol from Santa Catarina Plateau. The experiment was carriedout with nine treatments in four replicates, where the evaluated parameters were determined up to 24 monthsafter planting. In general, both limestone, lime mud, and gypsum, in different doses and ways of application,affected the chemical attributes of the soil but did not affect the foliar nutrient content at 12 months, height,and diameter at breast high (DBH) from trees and timber volume at 24 months. Gypsum do not correct soilacidity but lime mud provides similar results to limestone indicating that can substitute this corrective withoutdamage to nutritional status and initial development of Eucalyptus dunnii.
机译:巴西森林产品的高需求估计未来10年的重新造林区域增加200万公顷,突出了桉树物种。然而,这些作物通常发生在需要竖立以实现高生产率的酸性土壤中。除石灰石,石灰泥外,来自纤维素行业的残留物,Andgypsum还可以用作矫正,但是对尤为疑问的应用方式和应用方式有疑虑。因此,评估了土壤化学归属,叶面养分含量和肉豆植物的初始生长,以及在Santa Catarina Plateau的植物雪地醇上的植物雪地醇上的应用,患有石灰石,石灰泥和石膏的应用。该实验在四种重复中携带9种处理,其中评价的参数最多可植入24个月。通常,石灰石,石灰泥和石膏,以不同的剂量和应用方式,影响了土壤的化学属性,但没有影响乳房高(DBH)的12个月,高度和直径的叶状营养含量树木和木材体积在24个月。石膏不纠正土壤气泡,但石灰石提供类似结果的石灰石,表明可以将这种矫正器的矫正器替换为营养状况和桉树邓尼的初步发展。

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