覆盖对粘重土壤中苜蓿出苗的影响  

Effect of Mulching on Emergence of Lucerne Seedlings from Heavy Clay Soil

作　　者：毛玉林[1] 

机构地区：[1]甘肃省草原生态研究所

出　　处：《草业学报》1999年第2期76-80,共5页Acta Prataculturae Sinica

摘　　要：紧实土壤降雨后常由于板结而严重影响作物出苗，导致建植不良乃至失败。本实验采用遮阳膜覆盖、麦秸覆盖、不覆盖、土壤稳定剂４个表面处理和快速干燥、缓慢干燥２个干燥速度处理，研究苜蓿播后模拟降水条件下的出苗情况。结果表明，不同的覆盖及土壤处理条件下苜蓿出苗具有显著的处理效应，处理效应主要在出苗早期形成；遮阳膜覆盖比其他处理出苗显著要高；干燥速度对苜蓿出苗无影响。土壤稳定剂和麦秸对苜蓿出苗的影响需要进一步的研究。Crusting of heavy clay soils after rainfall often causes poor emergence of crop seedlings from soil or even failure of a crop. In this experiment the effect of mulching, using shading film and wheat straw, on the emergence of lucerne seedlings was studied under simulated rainfall and at different dryingup speeds. It was shown that shading film could significantly improve emergence, especially at its early stage, but no significant effect of dryingup speed was observed.

关 键 词：芷蓿 出苗 覆盖 模拟降雨 粘重土壤 

分 类 号：S551.7[农业科学—作物学]