中文摘要：

采用田间试验研究了不同磷肥用量对吉林省东、中、西部不同类型土壤玉米产量的影响。结果表明,施用磷肥可显著提高玉米产量,且随着施磷量的增加呈先增后降的趋势,依据玉米产量（y）和施磷量（x）拟合得出一元二次关系式：其中东部地区为y=-0.2830x^2＋47.632x＋9097.4,R^2=0.9509;中部地区为y=-0.1997x^2＋26.881x＋9172.3,R^2=0.9573;西部地区为y=-0.2202x^2＋38.357x＋7341.5,R^2=0.9549。结合当年玉米价格和肥料投入,得出吉林省东、中、西部最高产量磷肥用量和最佳经济产量磷肥用量分别为84.2 kg/hm^2、67.3 kg/hm^2、87.1kg/hm^2和80.1 kg/hm^2、61.6 kg/hm^2、81.9 kg/hm^2。土壤有效磷含量与最佳经济产量磷肥用量和最高产量磷肥用量存在极显著的负相关。

英文摘要：

Field experiments were carried out to study the effects of different phosphorus（P） application rate onmaize yield on different types of soil in the East, Middle and West parts of Jilin Province. The results showed thatphosphate fertilizer significantly increased the yield of maize, the yield increased at first and then decreased as theapplication of phosphate fertilizer increased, the fitted equation of two degree with maize yield and application ofphosphate fertilizer were： the eastern region y=- 0.2830x^2＋ 47.632 x ＋ 9097.4, R^2=0.9509, the central region y=-0.1997x^2＋26.881x＋9172.3, R^2=0.9573, the western region y=-0.2202x^2＋38.357x＋7341.5, R^2=0.9549. Combinedwith the current price of maize and fertilizer inputs, P application rates of maximum and optimum yieldswere84.2 kg/hm^2, 67.3 kg/hm^2, 87.1 kg/hm^2 and 80.1 kg/hm^2, 61.6 kg/hm^2, 81.9 kg/hm^2 in the East, There was a extremely signifi-cant negative correlation between the content of soil available phosphate and the phosphate fertilizer application ofthe highest yield and the maximum economic yield.