压裂和翻晒技术对紫花苜蓿含水量及干草品质的影响

Effect of crushed and tedded treatment on moisture and quality of alfalfa hay

为确定沙地调制苜蓿干草适宜的压裂程度和翻晒次数,通过对苜蓿进行4种压裂程度(未压裂、轻度压裂、中度压裂和重度压裂)和3种翻晒(0次、1次、2次)处理,研究对刈割后苜蓿含水量变化及干草品质的影响。结果表明,在干燥过程中,所有处理苜蓿含水量变化曲线整体上呈现先快后慢的下降趋势。压裂程度越大,翻晒次数越多,苜蓿水分散失速度越快。中度压裂苜蓿营养物质的保存好于未压裂和重度压裂处理。综合分析认为,中度压裂1次翻晒为适宜的沙地紫花苜蓿干草田间调制方法。

In order to determine the appropriate level of the crush and tedding process of alfalfa hay in sandy field,this study used alfalfa as research material with the process of crushing stalk in four degrees（un-crushed,mild crushed,moderate crushed,severe crushed） and tedding in three degrees（zero,once,twice）,and analyzed the variations of moisture,and the nutrients content in the modulation process.The results showed that the content of moisture demonstrated the tendency which was decreased fast at first and then slow down.The degree of crushing and tedding were greater,the speed of drying was faster.Moderate crushing alfalfa was drying faster,and the better preservation of nutrients than un-crushing and severe crushed treatment.It was concluded that the moderate crushed and once tedding were the appropriate degrees of flattening alfalfa hay in sandy field.