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陕西长武渭北旱原轮作试验结果表明,氮肥、磷肥、有机肥、氮磷配合和氮磷有机肥配合使用后,分别比对照小麦平均产量311.2斤/亩增产70.1斤/亩,54斤/亩,168.1斤/亩,187.3斤/亩,328.8斤/亩。豌豆、油菜、毛苕在轮作倒茬中利于地力恢复,可使后茬小麦分别增产13.3%,13.6%,17.4%。当地氮肥利用率为40.3%,磷肥当季利用率仅为11.5%。氮磷配合(无肥底)获利润34.01元/亩,远高于单施 N(利润11.49元/亩)和磷肥(利润7.9元/亩)的施肥利润之和19.39元/亩。有底肥(有机肥)的氮磷配合可获利润为66.76元/亩。
The result of rotation test showed that the average output of 311.2 kg / mu and 70.4 kg / mu of nitrogen, phosphate, organic manure, nitrogen and phosphorus, Mu, 168.1 kg / mu, 187.3 kg / mu, 328.8 kg / mu. Peas, rapeseed and jackfruff were beneficial to the recovery of soil fertility in crop rotation, which could increase 13.3%, 13.6% and 17.4% of the succeeding wheat respectively. The utilization rate of local N fertilizer is 40.3%, while the utilization rate of P fertilizer is only 11.5%. Nitrogen and phosphorus (no fertilizer) profit of 34.01 yuan / mu, far higher than the single application of N (profit of 11.49 yuan / mu) and phosphate fertilizer (profit of 7.9 yuan / mu) and fertilizer profit of 19.39 yuan / mu. Base fertilizer (organic fertilizer) with phosphorus and phosphorus can be a profit of 66.76 yuan / mu.