为探讨规模化养猪场产生的废水在直播稻生产中的施用技术，设计研究了不同用量养猪场废水处理对直播稻干物质积累、产量和组分、叶片SPAD值、植株含氮率、吸氮量、植株氮素转移率、氮素收获指数、氮素籽粒生产效率的影响。结果表明，养猪场废水能提供明显的氮素养分，适量的废水可以满足直播稻对氮素养分的需要；与常规施肥相比，基施废水120 m3/hm2与穗期施废水120 m3/hm2的组合加分蘖期施尿素225 kg/hm2的处理，在减少 300 kg/hm2尿素的情况下，理论单产增加10.2%，实际产量增加6.6%。废水总施用量达到210 m3/hm2以上的处理都可以达到常规施肥的产量效果。

In order to explore the application technology of pig slurry in direct seeding rice, an experiment was conducted to study the effects of wastewater application on dry matter accumulation, yield, leaf SPAD value, nitrogen content, nitrogen transfer rate, nitrogen harvest index and nitrogen grain production efficiency of direct seeding rice. The results showed that the application of pig slurry has obvious role in nitrogen supply. The combination of 120 m3/hm2 for base fertilizer and 120 m3/hm2 for panicle fertilizer, added with 225 kg/hm2 urea in the tillering stage, compared with the conventional fertilization treatment, reduced 300 kg/hm2 urea application, but increased actual yield by 6.6%. The treatments of total amount of pig slurry over 210 m3/hm2 could reach or exceed the yield of the conventional fertilization treatment.