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首页> 外文期刊>Australian Journal of Crop Science >Elephant grass (Pennisetum purpureum Schum.) biomass production as promising alternative source of energy in Brazil's semiarid area using gypsum
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Elephant grass (Pennisetum purpureum Schum.) biomass production as promising alternative source of energy in Brazil's semiarid area using gypsum

机译：大象草（Pennisetum purpureum Schum。）的生物质生产有望成为巴西半干旱地区使用石膏的有前途的替代能源

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As alternative to supply the energy demand in semiarid Brazil, the biomass production of elephant grass (Pennisetum purpureum Schum) is a promising alternative. However, the cultivation of grass depends on several factors, including the chemical conditions of some soils which may limit productivity. Thus, the proper use of mineral gypsum as soil corrector can increase the production of biomass. Furthermore, the genetic characteristics of the varieties of elephant grass may influence their ability to produce energy, due to their different levels of fiber and lignin. This study aimed at assessing the energy performance of three varieties of elephant grass grown in the absence and presence of mineral gypsum. Three elephant grass varieties Cameroon, Gramafante and Roxo were cultivated in the field condition in the presence and absence of mineral gypsum in a factorial arrangement (3 × 2), with treatments randomly assigned to four blocks. The research was conducted at the Experimental Station of the Agronomic Institute of Pernambuco in Araripina Pernambuco State, Brazil. The biomass above the elephant grass was cut from the soil surface, 213 days after planting. The evaluations were carried out on traits such as levels of fiber in neutral detergent, acid detergent fiber, lignin, moisture, dry matter content and higher heating value. The elephant grass varieties Cameroon and Gramafante presented higher heating value and high dry matter production reinforced by application of mineral gypsum. The variety Cameroon showed the highest energy production per unit area. Thus, the use of elephant grass mainly of Cameroon and Gramafante varieties has great potential to solve or minimize the energy deficit of Gypsum Pole of Araripe in Pernambuco.
机译：作为满足半干旱巴西能源需求的替代方案，大象草（Pennisetum purpureum Schum）的生物量生产是一种有前途的替代方案。但是，草的种植取决于几个因素，包括某些土壤的化学条件可能会限制生产力。因此，适当使用矿物石膏作为土壤改良剂可以增加生物量的产生。此外，由于象草的纤维和木质素含量不同，它们的遗传特性可能会影响它们产生能量的能力。这项研究旨在评估在不存在和存在矿物石膏的情况下生长的三种大象草的能量性能。在有无矿物石膏的情况下（3×2），在田间条件下种植了三种象草品种喀麦隆，格拉玛方特和罗克索，并随机分配了四个块。这项研究是在巴西亚拉比纳州伯南布哥州伯南布哥州农业研究所的实验站进行的。种植后213天，将大象草上方的生物量从土壤表面切下。对诸如中性洗涤剂中的纤维含量，酸性洗涤剂纤维，木质素，水分，干物质含量和较高的热值等特性进行评估。象草品种喀麦隆和格拉玛方特因施用矿物石膏而具有较高的热值和较高的干物质产量。喀麦隆品种表现出最高的单位面积能源产量。因此，主要使用喀麦隆和Gramafante品种的象草具有很大的潜力，可以解决或最小化伯南布哥州Araripe的石膏极的能量短缺。

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