不同措施改良盐碱化羊草草地试验研究

Effect of Different Improved Measures for Vegetation and Soil Fertility in Saline-alkalied Grassland

通过改良试验研究,三种措施都改善了草地生态环境,增加土壤速效养分,增加牧草在草群中所占比重。施肥改良使豆科和菊科牧草在草群中比重分别比对照区增加19.8%～39.9%和27.5%～34.4%,使禾本科牧草比重降低15.3%～21.3%,可食牧草产量增加22.0%～57.8%。围栏封育使豆科和菊科牧草分别增加13.4%～26.7%和4.7%～9.0%,可食牧草产量增加13.1%～78.0%。浅耕翻使豆科和菊科牧草比重分别增加17.7%～27.3%、23.2%～36.3%,禾本科牧草比重降低10.1%～12.1%,可食牧草产量由第1年减少28.5%转为增加28.6%。由此得出,施肥和围栏封育是草地改良的有效途径。

In order to improve the lawn plant survival requirement, to the degeneration, the salination lawn carried on the differentmeasure improvement experimental study.Three kind of improvements all improves sloppily the habitat, the increase soil fast-acting nutrent, the increase forage grass accounts for the proportion in the grass group. Fertilizing improvement to cause the leguminosae and the compositae forage grass the proportion increases 19.8%- 39.9% separately in the grass group compared to the control farm plot and 27.5%～ 34.4%, causes the gramimeae forage grass proportion to reduce 15.3%～21.3%, may eat the forage grass output to increase 22.0%～ 57.8%. Fencing causes the leguminosae and the compositae forage grass increases 13.4% ～ 26.7% separately and 4.7% ～ 9.0%, may eat the forage grass output to increase 13.1% ～ 78.0%. Shallowly cUltivation causes the leguminosae and the compositae forage grass proportion increases 17.7 % ～ 27.3% separately, 23.2% 36.3%, the gramineae foragegrass proportion reduces10.1%～ 12.1%, may eat the forage grass output from decrease 28.5% to increase 28.6%. From this obtains, fertilizing and fencing is effective way of grassland improvement.