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首页> 外文期刊>Australian Journal of Crop Science >Nutritional status and technological quality of sugarcane due to increasing gypsum doses
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Nutritional status and technological quality of sugarcane due to increasing gypsum doses

机译：石膏剂量增加导致甘蔗的营养状况和技术质量

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The sugar-energy sector is highlighted in Brazilian agribusiness; however, poor water distribution and soil acidity have limited theyield and quality of cane fields. Gypsum improves the physical and chemical properties of the soil, attenuating the effects of watershortage and acidity in the edaphic environment. The aim of this study was to determine the effect of gypsum doses on thenutritional status, photochemical efficiency and technological quality of sugarcane. The experiment was conducted under fieldconditions using a randomized block design in a 3 x 5 factorial scheme with four replications. The treatments consisted of thecombination of three sugarcane varieties (RB011941, RB92579, and RB991536) with five doses of gypsum (0 Mg ha -1 ; 2.5 Mg ha -1 ;5.0 Mg ha -1 ; 10 Mg ha -1 ; and 20.0 Mg ha -1 ). The results showed that gypsum did not influence the evaluated variables. A varietaleffect for leaf contents of P, K, Mg and S was observed. The RB92579 presented the highest levels of P (1.65 g kg -1 ) and K (14.55 gkg -1 ), while RB011941 showed the highest concentrations of Mg and S, 1.25 and 1.05 g kg -1 , respectively. The mean values of themacronutrients presented the following concentration order: N > K > Ca > Mg > P > S. Genotypes were similar in terms ofphotochemical efficiency, which in turn, was not influenced by gypsum application. The best technological quality was verified inRB92579, which showed the highest Brix percentage (22.35%), Pol (19.75%), and the highest levels of TRS (151.3 kg t -1 ) ofsugarcane.
机译：巴西农业综合企业强调了糖能部门。然而，差的水分配和土壤酸度限制了甘蔗田的产量和质量。石膏改善了土壤的物理和化学性质，减轻了土壤环境中缺水和酸度的影响。这项研究的目的是确定石膏剂量对甘蔗营养状况，光化学效率和技术质量的影响。该实验是在野外条件下使用3×5析因方案进行四次重复的随机区组设计进行的。处理包括将三种甘蔗品种（RB011941，RB92579和RB991536）与五剂石膏（0 Mg ha -1; 2.5 Mg ha -1; 5.0 Mg ha -1; 10 Mg ha -1;和20.0 Mg）组合使用ha -1）。结果表明，石膏不影响评估变量。观察到了叶片中P，K，Mg和S的多种效应。 RB92579的P（1.65 g kg -1）和K（14.55 gkg -1）最高，而RB011941的Mg和S最高，分别为1.25和1.05 g kg -1。宏观营养素的平均值按以下浓度顺序排列：N> K> Ca> Mg> P>S。基因型在光化学效率方面相似，因此不受石膏施用的影响。 RB92579证实了最佳的技术质量，其糖度最高（22.35％），波尔糖（19.75％）和最高水平的甘蔗TRS（151.3 kg t -1）。

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