近20年来和田绿洲农田土壤速效养分特征及其变化研究

The Characters and Changes of Farmland Soil Availabe Nutrients of Hotan Oasis in the Past 20 years

文章以新疆和田绿洲农田为研究区,分别在和田、墨玉、洛浦三个县绿洲农田内采集土壤样品60个,并对所采集的土壤样品进行室内实验分析,采用统计学方法以及统计软件SPSS(11.0)计算数据,并结合80年代和田土壤普查资料,对研究区农田土壤速效养分现状及其变化特点进行统计分析.结果表明最近20年来,和田绿洲土壤速效养分含量均呈上升趋势.其中.农田土壤速效钾含量有所升高,属于高等水平,土壤速效磷含量由80年代的极低水平上升到了中等水平。和田县和洛浦县的土壤速效氮含量由80年代的极低水平上升到了高等水平,但墨玉县仍有多数土壤样品速效氮含量属于极低水平.

60 samples were collected in Hotan Oasis of Xinjiang,and the contents of soil avilableN, P and K were measured. In this paper the statistical methods and SPASS statistical software （11.0） were used. The analysis was combined with Hotan soil survey information in 1980s. The results show that in the past 20 years,the soil available nutrient content of Hotan Oasis upward trend. Among them, soil available K content has increased, but the level is higher, soil available P content has increased from low level to middle class, In Hotan and Luopu County , the available soil N content were rising to a higher level from a very low level. However, the majority samples of Moyu County still belong to a very low level.