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| 水分、磷肥耦合对小麦各生育期土壤中氮磷养分的影响 | |
| 引用本文： | 刘文菊,李美茹,赵全利,李科江,张西科,刘微. 水分、磷肥耦合对小麦各生育期土壤中氮磷养分的影响[J]. 华北农学报, 2006, 21(Z2): 46-50 |
| 作者姓名： | 刘文菊 李美茹 赵全利 李科江 张西科 刘微 |
| 作者单位： | 1. 河北农业大学,资环学院,河北,保定,071001 2. 河北廊坊师专,生物系,河北,廊坊,065000 3. 河北省农林科学院旱作所,河北,衡水,053000 |
| 摘 要： | 通过田间试验,研究了施磷量、施磷深度和不同水分条件对冬小麦不同生育期土壤中氮、磷养分含量的影响。结果表明,在3种处理条件下,土壤中NO3-_N随小麦各生育期对氮素需求量而变化,在返青期和灌浆期,其在土壤中的含量均出现最低谷;土壤中的NH4 _N的含量在孕穗期出现高峰,其他生育期含量变化无明显影响;同样,土壤中有效磷含量在返青期和灌浆期出现低谷,而拔节或孕穗期达到高峰。根据土壤中氮磷养分的动态变化,推荐整个生育期灌水2次,施磷量及施磷深度分别为225 kg/hm2和30 cm。 |
| 关 键 词： | 冬小麦 氮 磷 |
| 文章编号： | 1000-7091(2006)增刊-0046-05 |
| 修稿时间： | 2006-04-22 |
The Dynamic Changes of NO3--N, NH4+-N and P in Soil on Conditions of Water Situation,Different Amounts and Depths of Papplied |
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| LIU Wen-ju,LI Mei-ru,ZHAO Quan-li,LI Ke-jiang,ZHANG Xi-ke,LIU Wei. The Dynamic Changes of NO3--N, NH4+-N and P in Soil on Conditions of Water Situation,Different Amounts and Depths of Papplied[J]. Acta Agriculturae Boreali-Sinica, 2006, 21(Z2): 46-50 | |
| Authors: | LIU Wen-ju LI Mei-ru ZHAO Quan-li LI Ke-jiang ZHANG Xi-ke LIU Wei |
| Abstract: | In the field experiment,the effect of different amounts and depths of P applied and water conditions on N and P concentrations in soil during different period of winter wheat were studied.The results showed that the concentrations of NO-3~--N changed with N-uptke by winter wheat in different growing period,the concentrations of NO-3~--N was lower at both reviving stage and filling stage.Water situation and the rate of fertilizer-P applied had no significant effect on the concentrations of NH-4~ -N except for booting stage;The contents of available P had some correlation with uptake of N and P in every period of winter wheat. |
| Keywords: | Winter Wheat NO-3~--N NH-4~ -N Available P |
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