中文摘要：

通过田间长期定位试验，研究经空间移位后置于相同环境条件下不同有机质含量农田黑土磷酸酶活性在玉米生育期内的变化及其与土壤有机质、养分、产量的相关性。结果表明：有机质含量高的土壤，其磷酸酶活性也相对较高；土壤磷酸酶与有机质、全氮、全磷、碱解氮显著相关，与产量达到显著相关水平。图3，表1，参10。

英文摘要：

Based on a long-term field experiment established by soil removal, the soil phosphatase activity dynamic during corn growth period under identical climate condition were studied. The relationships among soil phosphatase activity, soil nutrient and corn productivity were ana- lyzed. The results showed that there was a higher soil phosphatase activity in high organic matter content soil, There was significant positive correlations between soil phosphatase activity and soil organic matter content, total N, total P, available N, and their correlation coefficient were 0.993,0.996,0.951 and 0.921 repectively, and phosphatase activity significantly correlated with corn yield.