| 楝树籽提取物对土壤供氮和氮肥利用率的影响 |
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| 引用本文： | 张晓晓,沈其荣,谈建康,茆泽圣. 楝树籽提取物对土壤供氮和氮肥利用率的影响[J]. 应用生态学报, 2002, 13(11): 1417-1420 |
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| 作者姓名： | 张晓晓 沈其荣 谈建康 茆泽圣 |
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| 作者单位： | 南京农业大学资源与环境科学学院,南京,210095 |
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| 基金项目： | 国家自然科学基金资助项目 (3 983 0 2 2 0 ) . |
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| 摘 要： | 研究了楝树籽不同方式的提取物（NI，NⅡ）对普通铁质淋溶土壤，简有水耕人为土壤供N和N肥利用率的影响。NI可在一定程度上抑制两种土壤产生NO3－N，NⅡ在两种土壤上前期均能显著固定NH4^ -N并在后期释放出NH4^ -N。如果NI和NⅡ2种提取物同时与化肥N施入土壤，则可明显改善土壤的供N状况，使这与作物需N过程更吻合。盆栽实验证明，NⅡ可显著提高肥旱耕人为土壤上作物对N肥的利用率。
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| 关 键 词： | 楝树籽提取物 土壤供氮 氮肥利用率 影响 固定 矿化 氮肥增效作用 硝化抑制 |
| 文章编号： | 1001-9332(2002)11-1417-04 |
| 修稿时间： | 2001-01-12 |
Effects of neem seed extracts on nitrogen use efficiency in two different soils |
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| ZHANG Xiaoxiao,SHEN Qirong,TAN Jiankang,MAO Zesheng. Effects of neem seed extracts on nitrogen use efficiency in two different soils[J]. The journal of applied ecology, 2002, 13(11): 1417-1420 |
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| Authors: | ZHANG Xiaoxiao SHEN Qirong TAN Jiankang MAO Zesheng |
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| Affiliation: | Resource and Environment Science College, Nanjing Agricultural University, Nanjing 210095. zhangxiaoxiao-nau@163.net |
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| Abstract: | Incubation test and pot experiments were conducted with haplic luvisols and hydragric anthrosols to study the effects of neem seed extracts (N I, N II) on nitrification and immobilization of ammonium sulfate. N I could significantly inhibit the nitrification of N applied to the two soils. N II was effective in promoting the immobilization of NH4+(-)N. Pot experiments showed that N II could increase the use efficiency of chemical nitrogen significantly in fimic anthrosols. |
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| Keywords: | Neem seed extracts Immobilization Mineralization Nitrogen use efficiency. |
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