复配酸化对滴灌条件下石灰性土壤pH、磷有效性及玉米吸收的影响

发布时间：2018-05-19 17:23

本文选题：玉米复配酸化 + 土壤有效磷　；参考：《新疆农业科学》2017年04期

【摘要】：【目的】研究不同比例硫酸铵(生理酸性)和磷酸脲(化学酸性)在石灰性土壤上施用,对土壤酸碱度、土壤有效磷含量和玉米对磷素吸收及产量的影响。【方法】采用田间小区试验方法,模拟大田条件下复配酸化剂对作物生长发育的影响。【结果】施用硫酸铵和磷酸脲复配显著降低局部土壤pH,且随施用次数的增加,酸化效果呈现增强的趋势。在第6次施用复配酸化后酸化效果最强,土壤pH最大降幅0.35个单位,并且复配酸化显著提高了土壤有效磷含量。在等养分投入和管理水平下,施用复配酸化能增加玉米植株生物量和提高植株磷素累积量。与常规施肥处理相比,复配酸化的磷素累积量分别增加了29.86%、15.06%、11.52%,玉米产量提高了7.72%~10.58%。【结论】滴灌条件下施用复配酸化是提高石灰性土壤养分有效性和作物增产的一种有效方法。
[Abstract]:[Objective] to study the effects of different proportions of ammonium sulfate (physiological acidity) and urea phosphate (chemical acidity) on calcareous soil, soil acidity and alkalinity, soil available phosphorus content and the effect of Maize on phosphorus absorption and yield. [results] the application of ammonium sulfate and urea phosphate compound significantly reduced the local soil pH and increased the acidification effect with the increase of application times. The acidification effect was the strongest after the sixth application of combined acidification, and the soil pH was greatly reduced by 0.35 units, and the soil available phosphorus content was significantly increased by the compound acidification. Under the rational level, compound acidification could increase the biomass of maize plant and increase the accumulation of phosphorus in the plant. Compared with the conventional fertilization, the accumulation of phosphorus in the compound acidification increased by 29.86%, 15.06%, 11.52%, and the yield of maize increased by 7.72%~10.58%. [Conclusion] the application of compound acidification under drip irrigation was to improve the nutrient of calcareous soil. An effective method of efficiency and crop yield.
【作者单位】：石河子大学农学院;新疆生产建设兵团绿洲生态农业重点实验室;
【基金】：农业部行业公益性专项“农作物最佳养分管理技术研究与应用”(201103003,201503217)~~
【分类号】：S153;S513

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