新疆昭苏马场打草场刈割期和田间快速干燥法对干草品质的影响

Effect of Cutting Period and the Method of Rapid Drying on the Hay Quality of Cut-grassland at Zhaosu Horse Ranch

利用昭苏马场割草地分别于7月上旬和8月上旬进行刈割调制干草,同时对刈割草进行翻草快速干燥,探讨刈割期和田间快速干燥法对干草品质的影响。建植第3年割草地分别于7月上旬和8月上旬进行刈割,测定产草量和牧草品质;同时翻草对刈割草的干燥快速和干草品质的影响进行比较分析。不同刈割期对牧草的豆禾比无明显影响,但8月份刈割牧草的叶茎比与7月份刈割牧草相比显著下降(P<0.01)。牧草的粗蛋白(CP)含量8月份比7月份刈割显著降低(P<0.05),而中性洗涤纤维(NDF)和酸性洗涤纤维(ADF)含量有不同程度的增加(P<0.05)。牧草刈割后在一日内翻草2次以上,4小时以内使刈割草的含水率降低至40%以下,当日傍晚(19:30)就能达到含水率15%左右。牧草干燥样品中叶茎比和各类营养素含量因翻草及次数无明显变化。7月份刈割并翻草加速田间干燥速度能有效提高干草的品质。

Zhaosu Horse Ranch＇s cut-grassland cutting in mid July and mid august and rapid mowing grass by turn, were analyzed the effect of cutting period and the fast drying method on hay drying the quality. In first experiment, pasture grass were harvest in mid July and mid August, were analyzed the herbage yield and quality; second experiment, the turn 1-3 times of cutting grass in a day, were comparison analysis the effect on rapid drying and hay quality. The proportion of leguminous plants in herbage was not significant changes mowing herbage （P〈0.05）, and the neutral detergent fiber and acid detergent fiber content of cutting grass significantly increased in August cutting grass （P〈0.05）. Thought turn the cutting grass above 2 times a day, within 4 hours reduce the moisture content below 40%, and can achieve the moisture content about 15% in the evening of same day. No significant difference in stem-leaf ratio and nutrient contents of hay due to the number of turn times the cutting grass. Pasture grass cutting in July and rapid drying in the field by turn can effectively improve the quality of the hay.