论文部分内容阅读
小冠花于1973年从美国引入我国,经过试验示范推广,在石楼县已有8597亩的栽培面积,是一种水土保持和经济效益较高的、群众喜爱的优良牧草。一、小冠花的水土保持效益小冠花适应性强,不择土壤,耐旱耐寒,繁殖容易,生活力强,并有发达的根系,是保持水土的优良牧草之一。据测定:一年生小冠花主根深一米以上,侧根支根50多条,分布半径约
Little Corolla was introduced into our country from the United States in 1973. After testing and demonstration, Little Corolla has 8597 mu of cultivated area in Shilou County, which is a kind of excellent pasture with high soil and water conservation and economic benefits. First, the small crown of soil and water conservation benefits Small Crown flowers adaptability, do not choose soil, drought and cold, easy propagation, strong vitality and well-developed roots, is to maintain one of the fine water and soil pasture. It is determined: annual angelica main root more than one meter deep, lateral root of more than 50 branches, the distribution radius of about