种植牧草改良盐碱化草地试验研究

针对近年来羊草草地利用不合理,载畜量过大,出现不同程度退化和盐碱化的问题。为改善草地植物生存条件,对退化、盐碱化草地进行了种草改良试验研究。结果表明,种植4种牧草后均改善了土壤养分状况,均增加土壤中的氮、磷和钾,其中敖汉苜蓿效果最佳,总氮和速效氮含量分别增加0.50%和31.91mg/kg,土壤中全磷和速效磷含量分别增加0.252%和11.33mg/kg,土壤中速效钾含量增加24.37mg/kg。含盐量和pH均有不同程度降低,最佳是碱茅,含盐量和pH分别下降0.058和0.9,其次为军需1号野大麦,含盐量和pH分别下降0.04和0.74。适应性强,抗旱、抗寒、耐盐碱,产量高、品质好。

Study on Improved Effect of Different Forage Varietiesin Saline-alkalied Grassland

In view of aneurolepidium chinense lawnwas unreasonable usedin recent years, number of animals sustainable oversized, appeared the varying degree degeneration and the salination question. In order to improve the lawn plant survival requirement, to the degeneration, the salination lawn carried on experimental study of planting grass. The result indicated that, after planted 4 pasturages to improve the soil nutrient condition, increased in the soil the nitrogen, the phosphorus and the potassium, the haughty Chinese alfalfa effect was best, the total nitrogen and the fast-acting nitrogen contentincreased 0.50% and 31.91mg/kg separately, in the soil the entire phosphorus and the fast-acting phosphorus content increases 0.252% and 11.33mg/kg separately, in the soil the fast-acting potassium content increases 24.37mg/kg. The salt content and pH have the varying degree to reduce, is best is the alkali cogon grass, the salt content and pH drops 0.058 separately and 0.9, next for Hordeum brevisubulatum(Trin.)Link.cv.Junxu No.1, the salt content and pH drops 0.04 separately and 0.74. Compatible, combats drought, resists the cold, bears salt alkaloid, the output high, the quality is good.