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Changing the Moisture Content of the Spartina and Miscanthus and Willow Shoots during Storage in Natural Conditions

Journal of Agricultural Science and Technology(B) 2013年第7期3卷 469-479页

作者： Aleksander Lisowski Artur Ciechacki Michal Sypula Jacek Klonowski Jaroslaw Chlebowski Krzysztof Kostyra Tomasz Nowakowski Adam Struzyk jan kaminski Malgorzata Powalka Department of Agricultural and Forest Machinery Warsaw University of Life Sciences Warsaw 02-787 Poland Department of Production Management and Engineering Warsaw University of Life Sciences Warsaw 02-787 Poland

The aim of this study was to determine the characteristics of the distribution of energy plant moisture content along the height of their shoots and the dynamics of moisture during storage in natural conditions. The shoots of Spartina, Miscanthus and willow were used in the study. Entire shoots were cut into sections of 10 cm and for each set in monthly cycles for six months moisture content was evaluated. After a month＇s storage of freshly cut shoots the biggest decrease of content moisture in the shoots of Spartina and Miscanthus was recorded, by 31% and 22%, respectively, and the lowest in willow shoots （12%）. After sixth months of shoots storage the lowest moisture content （10%-12%） was reached in miscanthus. The most uneven moisture content along the height of shoots Spartina was characterized because on one third of the height from the bottom, the moisture content of shoots was 20%, and the top had moisture content in the range 5%-10%. Willow shoots were characterized by the smallest drop in moisture, and the final moisture content was about 23%, with the top part of moisture content of 10%-20%. The dynamics of moisture change during the six months of storage of grass shoots （Miscanthus and Spartina） in natural conditions under roofing was described by one power function regression, and willow by another one. Empirical models can be used to predict changes in moisture content of these plants in experiment conditions, since the coefficients of determination were 94.66% and 89.18%, respectively.

关键词： Spartina Miscanthus willow moisture content storage natural drying

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