摘要
研究结果表明:退化红壤人工草地随着建植年限的增加,其土壤容重增加,孔隙度减少,渗透速率减慢,土壤养分总量有一定的积累,但是有效养分不断减少,土壤微生物的数量和比例失调;施用无机肥能够改善土壤的化学和微生物性状,但在短时期内不能直接改善土壤的物理性状。
The research results showed that when the planting years of artificial grassland in red soil region increased, the porosity reduced, the infiltration rate slowered and the total soil nutrient contents became more and more while the available soil nutrient contents reduced and the biomass of edaphon appeared disproportion. Fertilization test in the artificial grassland showed that fertilization could improve the chemical properties and microbes amount of the soil in degenerated grassland, but could not improve physical properties in short time.
出处
《江西农业学报》
CAS
2008年第9期46-48,共3页
Acta Agriculturae Jiangxi
基金
云南省自然科学基金项目(2001C0102)
关键词
退化红壤
人工草地
理化性状
微生物性状
Degraded red soil
Artificial grassland
Physical - chemical property
Microbe property
