中文摘要：

以沈阳市郊设施菜地土壤为研究对象，通过设置5个不同有机肥用量处理的小区实验，系统研究了不同有机肥施用量（0—60t·hm^-2）对0-40cm土层土壤全磷、速效磷及黄瓜产量的影响。结果表明，黄瓜拉秧期0-20cm土层土壤全磷含量均随有机肥施用量的增加而增加，当有机肥施用量达到40t·hm^-2时，0—20cm土层全磷含量显著提高（P〈0．05），20-40cm土层全磷含量在单个黄瓜生长季内则无显著变化；施用有机肥后，0-20cm土层速效磷含量表现出先升高至黄瓜开花期后逐渐降低的趋势，而20-40cm土层速效磷含量在黄瓜坐果期后逐渐提高，在该实验条件下，施有机肥20t．hm^-2可在拉秧期基本保持原有土壤速效磷水平，高量有机肥可进一步提高土壤速效磷含量从而提高土壤磷淋失风险；在一定范围内，随有机肥施用量的增加，黄瓜产量有所提高，当有机肥施用量超过40t·hm^-2时，黄瓜产量无显著变化（P〈0．05）。

英文摘要：

A field plot experiment was conducted in Shenyang suburb to study the effects of applying organic manure on the phosphorus accumulation and its availability in greenhouse soil and the yield of cucumber. Five treatments （0, 10, 20, 40, and 60 t· hm^-2 of organic manure） were installed. The results showed that, after harvest, the total P content in 0-20 cm soil layer increased with increasing application rate of manure, being more significant when the application rate was 〉 40 t .hm^-1, while that in 20-40 cm soil layer had no significant difference among the treatments. Under the application of organic manure, the available P content in 0-20cm soil layer increased before the stage of flowering and decreased then, while that in 20-40 cm soil layer increased gradually from the beginning to fruiting stage. In our study, applying 20 t ·hm^-2 of organic manure could maintain the soil available P level, while higher application rates could induce the risk of soil P leaching. Appropriate application rate （10-40 t· hm^-2） of organic manure could improve cucumber yield, but the yield was not increased significantly with exeessi,ce rate （〉40 t·hm^-2） of organic manure.