那曲废弃荒地机械免耕补播与人工补播效果试验  

Experimental Study on the Effects of Mechanized No-Tillage Reseeding and Manual Reseeding in Derelict Wasteland of Nagchu

作　　者：小白玛玉珍 旦久罗布 严俊 白玛旦增 谢文栋 王有侠 高科 马登科 妹妹 其美卓嘎 张海鹏 仓木决 Xiaobaimayuzhen;Dangjiuluobu;YAN Jun;Baimadanzeng;XIE Wendong;WANG Youxia;GAO Ke;MA Dengke;Meimeil;Qimeizhuoga;ZHANG Haipeng;Cangmujue(Nagchu Agriculture and Animal Husbandry(Grassland)Science and Technology Research and Promotion Center,Nagchu Xizang 852000,China;Chali County Rongduo Township Agriculture and Animal Husbandry Comprehensive Service Center,Nagchu Xizang 8520o0,China)

机构地区：[1]西藏自治区那曲市农牧业(草业)科技研究推广中心,西藏那曲852000 [2]西藏自治区那曲市嘉黎县绒多乡农牧综合服务中心,西藏那曲852000

出　　处：《西藏农业科技》2025年第1期58-61,共4页Tibet Journal of Agricultural Sciences

摘　　要：通过极重度退化草地类型的生态恢复措施和免耕补播技术,进一步为藏北退化沙化草地提供生态补播恢复技术支撑,在那曲城镇周边的废弃荒地上,开展机械化生态恢复免耕补播试验,通过免耕补播机械在荒地开沟深约5cm,行距20cm,免耕补播机种肥仓以1∶2的比例,混合有机肥和垂穗披碱草、早熟禾等多年生种子一起播种,播种后由机械后部类耙子自行覆土,达到全程机械化。结果表明:利用多年生适宜品种实施机械免耕补播,废弃荒地可食牧草植被覆盖率由原来的0提高到64.78%,同时采用机械免耕补播牧草出苗率较人工补播牧草出苗率高29%。Through the study of ecological restoration measures for extremely severely degraded grassland types and no-tillage reseeding techniques,the research further provides ecological reseeding recovery technical support for the degraded and desertified grasslands in northern Xizang.In the abandoned wasteland surrounding the towns of Nagchu,a trial of mechanized ecological restoration through no-tillage reseeding was conducted.The no-tillage reseeding machinery created furrows about 5 cm deep and spaced 20 cm apart.The seed and fertilizer hopper of the no-tillage reseeding machine mixed organic fertilizer with perennial seeds such as alkali grass and bluegrass at a ratio of 1:2 for sowing.After sowing,the soil was covered by a rake-like attachment at the rear of the machinery,achieving full mechanization throughout the process.The results showed that by using suitable perennial varieties for mechanized no-tillage reseeding,the coverage rate of edible pasture vegetation in the abandoned wasteland increased from 0 to 64.78%.Additionally,the seedling emergence rate of pasture grasses through mechanical no-tillage reseeding was 29%higher than that of manual reseeding.

关 键 词：废弃荒地 生态修复 机械免耕补播 

分 类 号：S233.7[农业科学—农业机械化工程]