针对草原改良的原地放垡间隔松土技术  

Technology of placing furrow slice in-situ and spacing scarification for meadow improvement

作　　者：武广伟[1] 宋建农[1] 王继承[1] 王冲[1] 董向前[1] 

机构地区：[1]中国农业大学工学院,北京100083

出　　处：《中国农业大学学报》2009年第5期126-129,共4页Journal of China Agricultural University

基　　金：国家"十一五"科技支撑计划重点项目课题(2006BAD28B0802)

摘　　要：针对我国草原长期过载放牧,导致土壤板结严重,草原退化严重的问题,通过对现有的松土改良技术进行分析比较,提出了一种应用于草原土壤改良的原地放垡间隔松土技术。田间试验结果表明:松土作业后,土壤容重和坚实度平均值分别降低了30%和48.8%,平均含水率增加了38.72%,草原土壤蓄水保墒能力提高;松土后天然草地和人工草地产草量分别增产73.99%和65.65%。该技术能够满足不翻垡草原土壤、不破坏地表植被的松土改良农艺要求,实现了耕作层间隔疏松,进而形成适合牧草生长的虚实并存的耕作层。原地放垡间隔松土技术可作为草原改良松土的新方法。Focusing on the serious problem of soil compaction and grassland degradation on account of long-term grazing overload, the technology of placing furrow slice in-situ and spacing scarification for meadow improvement was raised by analyzing and comparing existing scarification technology. The technology can loose soil of plough layer, and meet the agricultural requirements of meadow improvement which did not turn furrow slice and destroy grassland vegetation. The technology can form the spacing cultivated horizon of adapting to the growth of grass and which was beneficial to moisture conservation. Experimental results show that the average soil bulk density reduced by 30%, the average firmness reduced by 48.8% and the moisture content increased by 38.72% after scarification. The yield of natural grassland increased by 73.99% and the yield of artificial grassland increased by 65.65%, the effect shows that the improvement of the grassland ecological environment and improve grass production is obvious.

关 键 词：草原改良 原地放垡 虚实耕作 松土 

分 类 号：S345[农业科学—作物栽培与耕作技术]