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为了探索有效的紫花苕绿肥节能制干技术,试验采用直接晒干、直接烘干、晒烘结合、挤压除水烘干对光叶紫花苕鲜草进行制干处理。结果表明:直接晒干不耗能,但得到的干草为黄色,草味差,营养损失大,其中粗蛋白和粗脂肪损失率分别为12.96%和19.82%;直接烘干得到的干草为深绿色,草味浓,营养基本无损失,干草品质好,但耗能大(耗电18 kW/h);晒烘结合法得到的干草为绿黄色,草味稍淡,营养成分损失与直接烘干组相比差异不显著(P>0.05),而且烘干电耗(8 kW/h)减少55.6%(P<0.01);与直接烘干组相比,挤压后烘干法节约电耗66.7%(6 kW/h),养分损失差异不显著(P>0.05),得到的干草品质好,但需增加设备和能耗。说明晒烘结合法不增加劳动量,干草损失少,节能,是制作绿肥干草比较理想的制干法,可以在生产中应用。
In order to explore the effective technology of Zizania caduciflora energy-saving dry-making, the experiment uses direct drying, direct drying, drying combined with drying, squeezing and drying to dry fresh leaves of Ziziphus chinensis. The results showed that direct drying did not consume energy, but the hay obtained was yellow with poor grassy taste and nutrient loss. The loss rates of crude protein and crude fat were 12.96% and 19.82%, respectively. The direct dried hay was dark green , Strong grassy flavor, no loss of nutrition, good hay quality, but high energy consumption (18 kW / h), hay obtained by combination of drying and drying, greenish yellow, slightly weed, loss of nutrients and direct drying (P> 0.05), and the drying power consumption (8 kW / h) decreased by 55.6% (P <0.01). Compared with the direct drying group, the power consumption after extrusion drying was 66.7% % (6 kW / h), the difference of nutrient loss was not significant (P> 0.05), the hay quality was good, but the equipment and energy consumption were increased. This shows that drying combined with law does not increase the amount of labor, less hay loss, energy saving, is the ideal system for making green hay dry system, can be applied in production.