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为了探索北京市顺义区土壤供肥特点和氮、磷、钾肥施用效应,以甘薯为供试作物,在北京顺义大孙各庄镇赵家峪布置了量级平衡施肥试验。结果表明,氮、钾量级水平上,N2P2K2这个处理产量最高达2024.79kg/667m2;磷量级水平下,N2P1K2处理产量最高为2365.98kg/667m2。施氮、磷、钾肥对产量有一定影响,揭示该土壤地力水平偏低,生产实践中应及时监测土壤养分状况,合理施肥。回归分析表明,最佳施肥量分别为氮4.78kg/667m2、五氧化二磷6.25kg/667m2、氧化钾8.29kg/667m2。
In order to explore the characteristics of soil fertilization and the application effects of N, P and K fertilizer in Shunyi District of Beijing City, a batch of balanced fertilization experiments were arranged in Zhaojiayu, Shuzhuang Town, Shunyi District, Beijing. The results showed that the yield of N2P2K2 was up to 2024.79kg / 667m2 at the level of nitrogen and potassium, and the highest output of N2P1K2 was 2365.98kg / 667m2 at the level of phosphorus. Nitrogen, phosphorus and potassium fertilizers have certain impact on yield, revealing that the soil fertility level is low, the production of soil nutrients should be timely monitoring the situation, the rational fertilization. Regression analysis showed that the best fertilization rates were nitrogen 4.78kg / 667m2, phosphorus pentoxide 6.25kg / 667m2, potassium oxide 8.29kg / 667m2.