一引种试种经过灰钙土土质沙,有机质少,透水性强,保肥力差,地力瘠薄。且有风砂为害,作物保苗困难,产量低。因此,培肥地力就成为改良利用此类土壤的重要措施之一。农田常用的厩肥、化肥来源有限,且化肥投资较大,厩肥运输困难,费工较多。所以选择适宜于灰钙土上生长的绿肥品种,供大面积种植利用,是我区肥料科学工作者考虑已久的问 An introduction of planted soil after calcareous soil, less organic matter, water permeability, poor fertility, fertility infertility. And sand damage, crop seedlings difficult, low yield. Therefore, fertilizing soil fertility has become one of the important measures to improve the use of such soil. Manure commonly used in farmland, limited sources of chemical fertilizers, and fertilizer investment, manure transport difficulties, more labor. So choose suitable for the growth of ash on the soil of green manure varieties for large-scale planting and utilization, is our region fertilizer science workers have long been considered