Nutrient Release Characteristics of Controlled Release Compound Fertilizer in Field and Its Effect on Nitrate and Ammonium Accumulation

CHEN Jian-qiu; CHEN Hong-kun; ZHANG Min; SUN De-fang; CHEN Hai-ning

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Nutrient Release Characteristics of Controlled Release Compound Fertilizer in Field and Its Effect on Nitrate and Ammonium Accumulation

更新时间：2024-11-07

- Nutrient Release Characteristics of Controlled Release Compound Fertilizer in Field and Its Effect on Nitrate and Ammonium Accumulation
- Vol. 25, Issue 4, (2011)
- 作者机构：
  
  1. 山东农业大学资源与环境学院国家缓控释肥工程技术研究中心作物生物学国家重点实验室
  2. 山东金正大生态工程股份有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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CHEN Jian-qiu, CHEN Hong-kun, ZHANG Min, et al. Nutrient Release Characteristics of Controlled Release Compound Fertilizer in Field and Its Effect on Nitrate and Ammonium Accumulation[J]. 2011, 25(4).
DOI：

CHEN Jian-qiu, CHEN Hong-kun, ZHANG Min, et al. Nutrient Release Characteristics of Controlled Release Compound Fertilizer in Field and Its Effect on Nitrate and Ammonium Accumulation[J]. 2011, 25(4). DOI：

摘要

通过水中溶出率法和田间玉米根下土埋法

研究聚合物包膜控释复合肥的养分释放特征及其对土壤中NO3--N和NH4+-N累积的影响。结果表明

浸提温度越低

控释复合肥的养分释放速率越慢

CRF1和CRF2在15℃的释放期分别是25℃的1.5

1.67倍

5℃的释放期皆为25℃的2倍;夏季CRF3田间养分释放速率稍慢于水中溶出速率

从第7天到第84天二者累积养分释放率平均变幅为3.12%;春季CRF4田间养分释放明显慢于水中溶出速率

最大变幅达31.8%;与CCF处理相比

施用控释复合肥能够显著提高玉米生长期耕层的NH4+-N含量和0-20 cm土层的NO3--N含量

显著减少20-40 cm土层的NO3--N的累积

且CRF3-H处理与CCF处理比较

在第14天和第84天时20-40 cm土层的NO3--N含量仍然表现为差异显著。因此

应根据不同地域的气候条件和作物需求

选用养分释放特征适宜的控释肥料

达到增效、节肥、安全、环保的目的。

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