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以英国Hillsborough农业研究所附近的一块牧草田为研究区,采用地统计方法分析了1999年三季牧草干物质量和氮素产量的空间变异及两者之间的关系。结果表明:牧草干物质量与氮素产量的空间格局在不同生长季有很大区别;在本试验田中,第一季的产量高且变异小,这主要与牧草本身的生长规律和较高的肥料投入有关;对于牧草氮素产量,还与土壤中N的矿化有关;牧草氮素产量与干物质量之间存在极显著的相关性,其空间结构基本一致。
Taking a pastureland near Hillsborough Institute of Agriculture in England as a study area, the spatial variability of pasture dry matter yield and nitrogen yield in 1999 was analyzed by geostatistics and the relationship between them was analyzed. The results showed that the spatial pattern of forage dry matter mass and nitrogen yield differed greatly in different growing seasons. In the experimental field, the yield and variation of forage yield in the first season were high and the variation was small, which was mainly related to the growth law of forage grass itself and higher fertilizer But also related to the mineralization of N in the soil. There was a significant correlation between nitrogen yield and dry matter of forage, and its spatial structure was basically the same.