滴灌条件下不同磷肥品种对土壤磷有效性及玉米产量的影响
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张皓禹(1995-),男,硕士研究生,主要从事植物营养研究。E-mail:849592583@qq.com

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国家重点研发计划项目(2017YFD0201808)


Effects of Different Phosphorus Fertilizerson Soil Phosphorus Availability and Maize Yield Under Drip Irrigation
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    摘要:

    通过模拟试验及田间试验研究不同磷肥施用后对土壤磷有效性的动态变化和分布特点,以及玉米磷吸收和产量响应的影响。田间和模拟试验包括4个处理,分别为对照(不施磷肥)、MAP (磷酸一铵)、UP (磷酸脲)和AAP (水溶性聚磷酸铵)。模拟试验中,不同磷肥均提高土壤中有效磷含量,APP处理10-15 cm土层有效磷含量增加最多。在均匀的养分投入和管理水平下,3种磷肥品种均有土壤酸化效果,其中UP处理最为显著。田间试验中,玉米生长后期,APP处理的土壤有效磷含量在深层土壤分布较高,UP处理土壤pH较低,均有利于改善土壤的供磷能力,提高土壤有效磷含量;APP处理对根系发育有显著的促进作用,玉米组织磷含量和磷吸收量最大,产量最高(14.40 t/hm2)。3种磷肥中,APP处理移动性较好,土壤深层有效磷含量增加,利于根系生长和养分的吸收,提高产量。水溶性聚磷酸铵(APP)是一种适合于玉米灌溉施肥的肥料。

    Abstract:

    The effects of different phosphorus (P) fertilizers on the dynamics and distribution of soil P availability and the maize P uptake and yield were studied by the simulation experiments and field experiments. Both experiments included 4 P fertilizers application treatments respectively, which were control (no phosphate fertilizer), MAP (monoammonium phosphate), UP (urea phosphate), and AAP (water-soluble ammonium polyphosphate). In the simulation experiments, the available P contents in soil were increased by different P fertilizers, and the highest P content was observed in the APP applied soil of 10-15 cm. Under the general nutrient input and management level, soil acidification was found in all three P fertilizers treatments, of which UP gave the most significance. In the field experiment, the available P content in soil treated by APP was higher in deep soil at the late growing period of maize, and the pH value of soil treated by UP was lower, both of which were conducive to improving soil P supply capacity and improving soil available P content. The APP application had a significant promoting effect on root development, resulting in the highest P content and P absorption in maize tissues and the highest yield (14.40 t/hm2). Among the three P fertilizers, APP mobility was relatively better, resulting in the increased contents of available P in the deep soil, which could be conducive to root growth and nutrient absorption, and improving maize yield. Therefore, APP is a kind of P fertilizer suitable for maize water and fertilizer management.

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张皓禹, 张君, 张凤麟, 刘地, 危常州.滴灌条件下不同磷肥品种对土壤磷有效性及玉米产量的影响[J].水土保持学报,2019,33(2):189~195

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  • 收稿日期:2018-10-17
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  • 在线发布日期: 2019-04-17
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