三种环境材料复合对土壤水肥保持同步增效的影响

发布时间：2018-06-03 01:23

本文选题：保水剂 + 腐植酸　；参考：《农业环境科学学报》2017年12期

【摘要】：为研发基于功能互补的不同环境材料复合对土壤水分和氮磷肥保持增效的同步效应,本文选取保水剂(A)、腐植酸(B)和沸石(C),通过室内土柱模拟方法,采用正交实验设计,探究3种不同环境材料复合对土壤水分和氮磷肥保持同步增效的主次和不同目标的组合优化,最终获得提高土壤水分和土壤氮磷保持增效的最优组合,通过过程分析探讨不同环境材料对土壤水肥保持的效应机理。结果表明:3种环境材料复合对土壤水分和氮磷肥保持增效有明显效果,对水分保持和氮磷肥同步增效的最优组合为A3B3C2(即保水剂、腐植酸和沸石添加量为1.5、1.5 g·kg~(-1)和9.0 g·kg~(-1)),该组合相比CK的土壤水分淋出量减少3.5%,氮素淋出量减少12.1%,磷素淋出量增多65.5%;比较发现,沸石对土壤淋溶液p H和EC值影响最大,保水剂居中,腐植酸作用最小;3种环境材料的添加可增加土壤孔隙度,改善土壤团粒结构,具有改良土壤的效应。研究结果为新型肥料研发提供重要参考。
[Abstract]:In order to develop the synergistic effect of different environmental materials based on complementary function on soil moisture and nitrogen and phosphorus fertilizer retention, this paper selected water retaining agent Agna, humic acid B) and zeolites Che, and adopted orthogonal experimental design by means of indoor soil column simulation method. To explore the combination optimization of three kinds of environmental materials to improve the synchronization and efficiency of soil water and nitrogen and phosphorus fertilizer, and to obtain the best combination to improve the efficiency of soil water and soil nitrogen and phosphorus retention. The effect mechanism of different environmental materials on soil water and fertilizer conservation was discussed through process analysis. The results showed that the compound of three environmental materials had obvious effect on soil moisture and nitrogen and phosphorus fertilizer, and the optimum combination of water conservation and nitrogen phosphorus fertilizer was A3B3C2 (water retaining agent). The amount of humic acid and zeolite was 1.5 g / kg ~ (-1) and 9.0 g / kg ~ (-1) respectively. Compared with CK, the amount of soil water leaching decreased by 3.5%, the amount of nitrogen leaching decreased by 12.1g, and the amount of phosphorus leaching increased by 65.5%. The addition of three kinds of environmental materials with minimal humic acid effect can increase soil porosity, improve soil aggregate structure and improve soil quality. The results provide an important reference for the research and development of new fertilizer.
【作者单位】：中国矿业大学(北京)化学与环境学院;北京首创环境投资有限公司;
【基金】：十三五国家重点研发计划项目(2016YFC0501108) 国家自然科学基金项目(41571303) 三峡后续工作科研课题(2015HXKY2-4) 中央高校基本科研业务费专项基金(2016QH02) 北京市自然科学基金项目(8152025)~~
【分类号】：S152.7;S158

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