摘要
通过直接在裸碱地上扦插和平埋玉米秸秆使土壤表层可溶性盐分明显下降 ,土壤有机质含量提高 ,土壤 pH值降低 ,植物地上、地下生物量增加 ,盐碱地植物在株高、冠幅、伏地幅和分蘖等方面的生物学特性发生改变。两种处理方式改良盐碱地都取得了良好的效果 。
Experiment was conducted to improve the soil alkali salinity by cornstalk inserted and levelly buried. Hypothesis of the experiment is that the cornstalk can change the surface physical properties of soil in order to ratain the seeds of Chloris virgata , then change the chemical and physical properties by decomposed themselves so that Chloris virgata could survive. Results showed that by using cornstalk soluble total salt declined significantly, the content of organic matter increased, pH in surface soil decreased, moreover, there were a change of some biological properties, such as plant height, plant canopy width, plant canopy width of ground, tiller ring. Two treatments had well improving effect, but the inserting treatment has better effect than burying treatment.
出处
《中国草地》
CSCD
2001年第6期34-38,共5页
Grassland of China
基金
国家重点基础研究发展规划项目(G2 0 0 0 0 186 0 6 )
