桂西北地区不同地表处理方式改良草地的效果比较

Comparison of effects of different land surface treatments on grassland improvement in Northwest Guangxi

笔者通过6种不同地表处理方式,对热研2号柱花草及纳罗克非洲狗尾草开展天然草地改良效果进行比较研究。连续2年分别对各处理改良草地牧草产量、牧草组分等指标进行测定,第2年取混合样进行营养成分测定。试验数据显示,使用化学除草+微耕地表处理方式改良草地,其干草产量、牧草粗蛋白及粗脂肪含量最高,而其粗纤维含量为最低。综合考虑干草产量、组分占比及养分等指标,化学除草+微耕是本试验中6个不同处理中最佳的草地改良地表处理方式。

A comparative study on the improvement effect of natural grassland was carried out by using six different surface treatments and sowing Stylosanthes guianensis cv.Reyan No.2 and Setaria sphacelata Stapf cv.Narok. Pasture yield, pasture components and other indicators of the improved grassland were measured respectively in consecutive two years, and nutrient component of mixed samples was measured in the second year. Results show that the chemical weed control ＋ micro tillage method get the highest hay yield and crude pro- tein and crude fat ,while lowest crude fiber content. Considering the yield of hay, the proportion of components and the nutrient, the chemical weeding ＋ micro - tillage is the best methods for improving grassland surface treatment in six different treatments.