| 辛志远,王昌全,申亚珍,马菲,周健民,杜昌文.水基包衣控释掺混肥料一次性施用对单季稻氮素利用的影响[J].农业环境科学学报,2016,35(1):109-114. |
| 水基包衣控释掺混肥料一次性施用对单季稻氮素利用的影响 |
| Effect of single application of water-borne polymer coated controlled-release blend fertilizer on nitrogen utilization in rice |
| 投稿时间：2015-07-22 |
| DOI：10.11654/jaes.2016.01.015 |
| 中文关键词: 水基包衣控释肥料 一次简化施肥 氮素利用 土壤顶空 氨挥发 氧化亚氮排放 |
| 英文关键词: water-borne polymer coated controlled release blend fertilizer one-time fertilization nitrogen utilization soil headspace ammonia volatilization nitrous oxide emission |
| 基金项目:国家公益性行业(农业)科研专项(201303103);国家“973”项目(2015CB150403);四川省科技支撑计划(2012JZ0003) |
| 作者 | 单位 | E-mail | | 辛志远 | 四川农业大学资源学院, 成都 611130 | | | 王昌全 | 四川农业大学资源学院, 成都 611130 | w.changquan@163.com | | 申亚珍 | 土壤与农业可持续发展国家重点实验室, 中国科学院南京土壤研究所, 南京 210008 | | | 马菲 | 土壤与农业可持续发展国家重点实验室, 中国科学院南京土壤研究所, 南京 210008 | | | 周健民 | 土壤与农业可持续发展国家重点实验室, 中国科学院南京土壤研究所, 南京 210008 | | | 杜昌文 | 土壤与农业可持续发展国家重点实验室, 中国科学院南京土壤研究所, 南京 210008 | chwdu@issas.ac.cn |
|
| 摘要点击次数: 2943 |
| 全文下载次数: 2363 |
| 中文摘要: |
| 通过田间小区试验研究一次性简化施肥对水稻产量和氮素吸收利用的影响,为水稻简化高效施肥提供技术支撑。以水稻品种南粳46 为试验材料,设置常规分次施肥处理和水基包衣控释掺混肥料(控释氮占 30%)一次性简化施用处理,在施肥后利用红外光声光谱法监测农田顶空 NH3 和N2O 浓度,并测定植株各部位氮素积累量和不同生育期土壤铵态氮与硝态氮含量。结果表明,与常规分次施肥相比, 一次简化施肥处理将产量从 6 201.9 kg·hm-2 提高到 6 506.9 kg·hm-2,在观测期内常规分次施肥处理的土壤顶空NH3 和N2O平均浓度为19.14、8.40 μmol·mol-1,而一次简化施肥处理则分别为 18.63、7.74 μmol·mol-1,氮肥气态损失相对减少,同时土壤中残留的硝态氮与铵态氮有增加的趋势。因此,常规分次施肥的农学利用率为 7.81 kg籽粒·kg-1氮,而一次简化施肥处理农学利用率为 9.09 kg籽粒·kg-1氮。综上,水基包衣控释掺混肥料可以实现水稻一次性施肥,在保证产量的基础上实现氮素利用率的提升,为水稻简化高效施肥提供了技术支撑。 |
| 英文摘要: |
| A field experiment was conducted to study the effects of one-time fertilization of water-borne polymer coated controlled release blend fertilizer on rice growth, rice yield, plant nitrogen absorption, soil nitrogen dynamics and nitrogen-containing gas emissions(NH3 and N2O). Rice cultivar used was Nanjing 46. Three treatments were no fertilization, conventional fertilization, and one-time fertilization of water-borne polymer coated controlled release blend fertilizer(controlled release nitrogen accounted for 30%). One-time fertilization treatment increased rice yield to 6 506.9 kg·hm-2 from 6 201.9 kg·hm-2 in the conventional fertilization, but slightly reduced NH3 and N2O average concentrations in soil headspace to 18.63 μmol·mol-1 and 7.74 μmol·mol-1 from 19.14 μmol·mol-1 and 8.40 μmol·mol-1 in the conventional fertilization, respectively. The residual nitrate nitrogen and ammonium nitrogen in soil showed an increase tendency in the one-time fertilization. The agronomic efficiency of nitrogen was 7.81 kg grain·kg-1 N for the conventional fertilization, while it was 9.09 kg grain·kg-1 N for the one-time fertilization. Therefore, the one-time fertilization showed more stable nitrogen supply, and also improved nitrogen utilization efficiency. |
| HTML
查看全文
查看/发表评论 下载PDF阅读器 |
|
|
|
