保水剂对橡胶树专用肥氮钾淋出特性的影响

王龙宇; 郑国亮; 华元刚; 刘海林; 林钊沐

doi:10.13961/j.cnki.stbctb.2016.01.038

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保水剂对橡胶树专用肥氮钾淋出特性的影响

试验研究

- 保水剂对橡胶树专用肥氮钾淋出特性的影响
- Effects of Water-retaining Agent on Leaching Loss of Nitrogen and Potassium from Special Fertilizer for Rubber Tree
- 水土保持通报 2016年36卷第1期页码：212-218
- 作者机构：
  
  1. 中国热带农业科学院橡胶研究所/农业部橡胶树生物学与遗传资源利用重点实验室/省部共建国家重点实验室培育基地,海南,儋州,571737
  2. 海南博士威农用化学有限公司,海南,海口,570228
- 作者简介：
- 基金信息：
  
  中国热带农业科学院橡胶研究所基本科研业务费专项(1630022015024);现代农业产业技术体系建设专项资金项目(CARS-34);海南耕地改良关键技术研究与示范专项(HNGDxf2015)
- DOI：10.13961/j.cnki.stbctb.2016.01.038
  中图分类号：
- 纸质出版：2016
- 稿件说明：
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王龙宇, 郑国亮, 华元刚, 等. 保水剂对橡胶树专用肥氮钾淋出特性的影响[J]. 水土保持通报, 2016,36(1):212-218.

WANG Longyu, ZHENG Guoliang, HUA Yuangang, et al. Effects of Water-retaining Agent on Leaching Loss of Nitrogen and Potassium from Special Fertilizer for Rubber Tree[J]. Bulletin of Soiland Water Conservation, 2016, 36(1): 212-218.
王龙宇, 郑国亮, 华元刚, 等. 保水剂对橡胶树专用肥氮钾淋出特性的影响[J]. 水土保持通报, 2016,36(1):212-218. DOI： 10.13961/j.cnki.stbctb.2016.01.038.

WANG Longyu, ZHENG Guoliang, HUA Yuangang, et al. Effects of Water-retaining Agent on Leaching Loss of Nitrogen and Potassium from Special Fertilizer for Rubber Tree[J]. Bulletin of Soiland Water Conservation, 2016, 36(1): 212-218. DOI： 10.13961/j.cnki.stbctb.2016.01.038.

摘要

[目的] 探寻减少橡胶树专用肥淋溶损失的途径

提高橡胶树专用肥利用率. [方法] 采用在橡胶树专用肥中添加保水剂的方法

模拟橡胶树每年第3次施肥期(9月份)的降雨量

开展间歇性土柱淋溶试验.研究了CMC(羧甲基纤维素钠)

PAM(聚丙烯酰胺)和PAA(聚丙烯酸钠)这3种保水剂对橡胶树专用肥氮素、钾素释放特征及淋溶损失的影响

筛选保水剂及合理施用比例. [结果] 3种保水剂对橡胶树专用肥中氮素、钾素的淋失均有抑制作用

其中保水剂PAM用量为6%时对橡胶树专用肥中的氮素、钾素淋失抑制效果最佳.该处理对氮素、钾素首次淋失抑制率分别为44.73%

57.16%

淋溶结束时氮素、钾素累积淋出量分别较未添加保水剂的对照处理减少了20.20%

14.87%. [结论] 在橡胶树专用肥中添加保水剂可有效降低橡胶树专用肥中氮素、钾素的淋溶损失.

Abstract

[Objective] The objective of this study is to explore the ways for reducing the leaching loss of speciel fertilizer for rubber tree in order to provide reference for increasing the efficiency of speciel fertilizer for rubber tree utilization. [Methods] An intermittent soil column leaching experiment was conducted by adding water-retaining agent to speciel fertilizer for rubber tree

and the rainfall in the third fertilizer application-period(September) in each year was simulated. Three water-retaining agents including carboxyl methyl cellulose(CMC)

polyacrylamide(PAM) and sodium polyacrylate(PAA) were selected. The effects of water-retaining agents on releasing characteristics and leaching losses of nitrogen and potassium from speciel fertilizers for rubber trees were explored to choose the proper application ratio of water-retaining agent and speciel fertilizer for rubber tree. [Results] All the 3 water-retaining agents showed inhibiting effects on leaching losses of nitrogen and potassium from speciel fertilizer for rubber tree. PAM had the best inhibiting effect at a dosage of 6%

and the relative for nitrogen and potassium losses in the first leaching was 44.73% and 57.16%

respectively. Compared to the control treatment

accumulated leaching losses of nitrogen and potassium was decreased by 20.20% and 14.87%

respectively. [Conclusion] Leaching losses of nitrogen and potassium from speciel fertilizer for rubber tree can be reduced by adding water-retaining agent to specific rubber fertilizer.

关键词

Keywords

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