天然羊草草地改良效果的研究

A Study on the Effect of Improving Natural Rangelands of Chinese Wildrye

摘要:

封育、松土、施肥和补播是改良天然羊草草地的有效农业技术措施。封育可使植被的盖度增加1倍以上,牧草产量增加3.2倍。松土可改善土壤的物理性状,土壤含水率和土壤总孔隙度增加。施肥可使产草量提高27.5%～84.7%,并能提高牧草的品质,深层施肥方法优于地表施肥方法。补播可使草地植被的盖度提高60%,牧草产量提高3.3倍。

Abstract:

The effective measures to improve natural rangelands of Chinese wildrye were closing,soil loosing,fertilizing and replanting.Closing can increase the coverage of Chinese wildrye by above 1.0 time,the yield of hay can be increased by 3.2 times.Soil loosing can improve the physical characters and raise water content and porosity of range soil.Fertilizing can increas the yield of the grass by 27.5~84.7%,deep fertilizing was more efficient than surface fertilizing.Repplanting can increase the coverage by 60%,the yield of hay can be increased by 3.3 times.