磷肥用量对河套灌区玉米产量·土壤磷含量的影响 |
| |
引用本文: | 张君,赵沛义,妥德宝,段玉,李焕春,靳存旺,李彬瑞,任永峰. 磷肥用量对河套灌区玉米产量·土壤磷含量的影响[J]. 安徽农业科学, 2013, 0(27): 10997-11000 |
| |
作者姓名: | 张君 赵沛义 妥德宝 段玉 李焕春 靳存旺 李彬瑞 任永峰 |
| |
作者单位: | 内蒙古农牧业科学院资源环境与检测技术研究所;农业部农牧交错带生态环境重点野外科学观测试验站;内蒙古旱作农业重点实验室;内蒙古农牧业科学院资源环境与检测技术研究;所农业部农牧交错带生态环境重点野外科学观测试验站;内蒙古旱作农业重点实验室;内蒙古巴彦淖尔市五原县农业技术推广中心; |
| |
基金项目: | 内蒙古农牧业科学院青年创新基金“河套灌区玉米氮磷肥投入阈值研究”(2011QNJJN04);国家公益性行业科研专项“东北半湿润平原区面源污染监测与氮磷投入化肥阈值研究”(20100314) |
| |
摘 要: | [目的]为了探讨不同磷肥用量对河套灌区玉米产量、土壤有效磷含量的影响。[方法]采用田问试验和室内分析化验相结合的方法,在内蒙古五原县连续2年进行不同磷肥用量试验。[结果]施磷可明显提高玉米产量。随着磷肥用量的增加,磷肥利_用率、农学效率、经济效益均呈逐渐下降趋势,土壤中3种磷素形态表现为Olsen-P〉CaCl2-P〉DTP。随着磷肥施肥量的增加,土壤Olsen—P、CaCl2-P、DTP呈二次型曲线增加趋势。[结论]河套灌区种植玉米经济施磷量为150kg/hm^2,生产100kg籽实吸磷量平均在0.77kg左右,随着施磷量的增加,土壤磷残留逐渐增加。
|
关 键 词: | 玉米 磷肥 产量 土壤磷 |
Effects of Different Phosphorus Application Amounts on Yield of Maize and Soil Phosphorus Content in Hetao Irrigation District of In- ner Mongolia |
| |
Affiliation: | ZHANG Jun et al ( Inner Mongolia Key laboratory of Dry Fanning, Key Observation station of Ecologic Environment of Ministry of Agricul- ture, Institute of Resources and Environment and Testing Technology, IMAAAHS, Huhhot, Inner Mongolia 010031 ) |
| |
Abstract: | [ Objective ] The research aimed to study the effects of different phosphorus application amounts on the yield of maize and soil phos- phorus content in Hetao irrigation district of Inner Mongolia. [ Method] By using field experiments and indoor chemical analysis and biological statistics, two year's experiments of different phosphorus application amounts were conducted in Wuyuan County. [ Result] Phosphorus applica- tion significantly increased maize yield. Phosphorus use efficiency, agronomic efficiency and economic benefits showed a gradual decrease with the increase of phosphorus fertilizer. Three kinds of phosphorus forms in soil showed Olsen - P 〉 CaC12 - P 〉 DTP, which showed quadratic curve upward trend with the increase of phosphorus fertilizer. [ Conclusion] The economic P205 application amount was 150 kg/hm2 in Hetao irrigation district, producing 100 kg grains absorbed about 0. 77 kg phosphorus. Residual phosphorus in soil increased with increase of phosphorus fertilizer. |
| |
Keywords: | Maize Phosphorus fertilizer Yield Soil phosphorus |
本文献已被 CNKI 维普 等数据库收录! |