用化学药剂抑制针茅结实提高草地利用率的研究

Study on Controling Stipa Fruiting with Chemicals to Enhance the Grassiand Utilization Ratioes

该研究于1986～1987年在新疆石河子紫泥泉在以针茅为主的草地上进行。作者首次采用多定量指标法综合评价了用药剂抑制针茅结实效果。结果表明用草甘膦抑制针茅结实效果明显好于用调节磷,且较经济,抑制其结实的最佳草甘膦和调节磷的使用浓度分别为0.1％和0.5％,通过抑制针茅结实,达到提高针茅草地利用率和生产力目的。

The study was conducted on Jstipa grassland of Ziniquan Town, Shihezi city , Xinjiang in 1986～1987.The multi -quantitative indexes method was first used to evaluate the effects of chemicals on controlling Stipafruitining in the paper comprehensively. The results showed that the effects of controlling stipa fruiting were more economical and effective with glyphosate than those with krenite, and the most effective concentra tions of controlling stipa frkuiting with gly phosate and krenite were 0.1 % and 0.5%.By controlling stipa fruiting, both purposes of enhancing the grassland utilization ratioes and productive fores were achieved in this type of grassland.