重度盐碱化草地土壤改良对牧草出苗率的影响

Severe salinization of grassland soil improvement effect on the grass germination rate

近年来的气候干旱和过度利用导致了内蒙古草原盐碱化加剧,给草原牧区带来了严重的经济和生态问题,盐碱化草地的植被修复已成为内蒙古草原区生态治理的重点和难点。本研究对锡林郭勒盟太仆寺旗贡宝拉格花淖尔重度盐碱化草地进行了土壤改良与牧草播种相结合的植被修复试验。结果表明:(1)在7种土壤改良措施中,DS改良剂3、脱硫石膏和有机肥处理的牧草出苗率较好;(2)4种牧草中,紫花苜蓿的出苗率最高;(3)从出苗率结果看,紫花苜蓿和脱硫石膏组合为最好的植被修复措施。

In recent years the climate drought and excessive use of lead in the Inner Mongolia grassland salinization, prairie pastoral areas poses a serious economic and ecological problems, salinization of grassland vegetation restoration has become the emphasis and difficulty in Inner Mongolia grassland ecological governance. In this study proceed improvement and the combination of forage planting vegetation restoration experiment at Taibus banner Gunbolag severe salinization steppe soil in Xilingol league. The results showed that：（1）In 7 kinds of soil improvement treatments, the DS improver, desulfurization gypsum and organic, fertilizer processing is better germination rate of forage grassy（2）Emergence rate of alfalfa was the highest in the four kinds of forage grass; （3） The results from seedling emergence, alfalfa and desulfurization gypsum as the best vegetation restoration measures.