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首页> 外文期刊>Global Ecology and Conservation >Interactions between N, P and K fertilizers affect the environment and the yield and quality of satsumas
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Interactions between N, P and K fertilizers affect the environment and the yield and quality of satsumas

机译：氮，磷和钾肥之间的相互作用影响环境以及萨摩烧的产量和质量

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The balance between crop yield, quality and soil nutrient status can be manipulated by exploiting nutrient interactions. Field experiments were conducted in citrus orchards in Danjiangkou, Hubei Province to assess the effects of N (0, 0.3, 0.6 and 0.9?kg plantsup?1/sup), P (0, 0.1, 0.2, 0.3?kg plantsup?1/sup), K (0, 0.15, 0.30, 0.45?kg plantsup?1/sup) and their interactions on residual nutrient content in soils, and the yield and quality of satsumas. The results showed that the effects of N and K fertilizers on the yield and quality of satsumas were greater than those of P fertilizers. Appropriate application rates of N (0.6?kg plantsup?1/sup), P (0.3?kg plantsup?1/sup) and K (0.15?kg plantsup?1/sup) significantly improved yield and quality. Lack or excess or inappropriate ratios of N, P and K fertilizer can affect the absorption and utilization of nutrients and reduce yield and quality. The best fertilizer combination, determined by comprehensively considering yield, quality and environment, was Nsub0.3/subPsub0.2/subKsub0.3/sub, which delivered moderate yield, high fruit quality and low potential risk of pollution. The amount of fertilizer in this case was 0.3?kg?N, 0.2?kg?P, 0.3?kg?K per plant, which is lower than the current recommended application rates (0.5–0.8?kg?N, 0.2–0.5?kg?P, 0.25–0.64?kg?K, respectively). The economic benefit did not decrease because of a decline of yield, but increased slightly because of the improved fruit quality and the reduction in fertilizer input, compared with the treatment with the highest yield. Therefore, we suggest that it is necessary to consider the quality of agricultural products and environmental protection when applying fertilizer and to reduce N and P fertilizer input and appropriately increase the proportion of K.
机译：作物产量，品质和土壤养分状况之间的平衡可以通过利用养分相互作用来控制。在湖北省丹江口市柑桔园进行了田间试验，评估了氮（0、0.3、0.6和0.9？kg植物？1 ），磷（0、0.1、0.2、0.3？kg）的影响。公斤植物？1 ），钾（0、0.15、0.30、0.45？公斤植物？1 ）及其与土壤中剩余养分含量，产量和品质的相互作用萨摩烧结果表明，氮，钾肥对萨摩产量和品质的影响均大于磷肥。氮（0.6？kg plant ？1 ），磷（0.3？kg plant ？1 ）和钾肥（0.15？kg plant ？1 ）的适当施用量/ sup>），大大提高了产量和质量。氮，磷和钾肥的缺乏，过多或不当会影响养分的吸收和利用，降低产量和质量。综合考虑产量，品质和环境确定的最佳肥料组合为N 0.3 P 0.2 K 0.3 ，产量中等，高水果品质和潜在的低污染风险。在这种情况下，每株植物的肥料用量为0.3？kg？N，0.2？kg？P，0.3？kg？K，低于当前建议的施用量（0.5–0.8？kg？N，0.2–0.5？N）。 kg？P，分别为0.25–0.64？kg？K）。与单产最高的处理相比，经济效益并未因单产下降而下降，而是由于改善了果实品质和减少肥料投入而略有增加。因此，我们建议在施肥时必须考虑农产品的质量和环境保护，减少氮磷肥的投入，适当增加钾的含量。

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