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为了将富含植物营养的集约化养猪场废水应用于农业生产,实现种养结合与保护环境的双赢,研究养猪场废水农田利用技术,可为养猪场-农田种植循环农业模式的应用提供技术支撑。通过田间试验,采用小麦越冬期污水施用量30、60、90、120m3/hm2与穗期氮化肥施用量0、30、60、90kg/hm2组合处理,研究猪场废水与氮肥配施对小麦干物质积累和籽粒产量的影响。结果表明:拔节期干物质积累量随着废水施用量增加而增加,抽穗期以废水施用90m3/hm2与氮肥30kg/hm2的组合干物质积累量最高,成熟期以废水30m3/hm2与氮肥90kg/hm2及废水120m3/hm2与氮肥30kg/hm2组合干物质积累量较高。小麦产量以废水30m3/hm2与氮肥60kg/hm2、废水90m3/hm2与氮肥30kg/hm2或60kg/hm2、废水120m3/hm2与氮肥30kg/hm2组合较高。综合对农田较高废水承载量和减少化肥施用的目标,以越冬期施用废水90～120m3/hm2、穗肥施氮30kg/hm2为最优组合。养猪场废水施用有明显的肥效作用,与化肥合理配施可取得超过常规施肥的产量,并显著减少氮肥的施用量。
In order to apply enriched plant nutrient-enriched piggery wastewater to agricultural production and achieve a win-win situation by combining planting and raising and environmental protection, the research on farmland utilization technology of piggery wastewater can be applied to the pig farm-crop farming cycle model Provide technical support Through field experiments, using 60, 90, 120m3 / hm2 of winter wheat over winter and 0, 30, 60 and 90kg / hm2 of nitrogen fertilizer application at heading stage, Material accumulation and grain yield. The results showed that the accumulation of dry matter at jointing stage increased with the increase of wastewater dosage. The dry matter accumulation of combination of 90m3 / hm2 and 30kg / hm2 of nitrogen fertilizer was the highest at heading stage. The dry matter accumulation of 30m3 / hm2 and 90kg / hm2 and wastewater 120m3 / hm2 and nitrogen fertilizer 30kg / hm2 higher dry matter accumulation. The yield of wheat was higher with 30m3 / hm2 of waste water and 60kg / hm2 of nitrogen fertilizer, 90m3 / hm2 of waste water and 30kg / hm2 or 60kg / hm2 of nitrogen fertilizer, 120m3 / hm2 of waste water and 30kg / hm2 of nitrogen fertilizer. Based on the goal of higher carrying capacity of waste water in farmland and reducing the application of chemical fertilizers, the optimal combination of applying wastewater of 90 ~ 120m3 / hm2 during winter and 30kg / hm2 of earring fertilizer was used. Pig farms wastewater treatment has obvious effect of fertilizer, fertilizer and fertilizer can be achieved more than conventional fertilization, and significantly reduce the amount of nitrogen fertilizer.