中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 不同茬口大豆根圈土壤pH值和氮营养分布的变化 中国油料作物学报 2004,26 (1)
Position: Home > Articles > Effect of different rotation systems on soil pH and N nutrition distribution across soybean rhizosphere Chinese Journal of Oil Crop Sciences 2004,26 (1)

不同茬口大豆根圈土壤pH值和氮营养分布的变化

作  者：
王光华;金剑;潘相文;周克琴;刘晓冰
单  位：
中国科学院东北地理与农业生态研究所
关键词：
茬口;大豆;根圈;pH;氮营养
摘  要：
利用根箱系统,研究不同茬口条件下大豆根圈土壤pH值和氮营养分布,结果表明,前茬为麦茬和玉米茬的大豆根面区土壤偏碱,而前茬为休闲和豆茬的大豆根面区土壤偏酸。不同茬口土壤大豆根面区NO-3-N含量较距根面2mm区低,表现为亏缺效应。尽管处理间NH+4-N含3-N小,但NH+4-N含量分布受茬口影响较NO-量分布走向却因茬口而不同,休闲土、正茬土、迎茬土、重茬土和大豆长期连作处理条件下的大豆根圈土壤NH+4-N含量表现为一定的累积效应,而小麦长期连作茬口土壤的大豆根圈NH+4-N含量表现为亏缺效应。试验结果表明不同茬口的大豆根圈土壤pH值、NO-4-N含量分布变化不同,说明大豆连作障碍的原因可能更3-N和NH+主要的归结于大豆根圈土壤微生态环境的改变。
译  名：
Effect of different rotation systems on soil pH and N nutrition distribution across soybean rhizosphere
作  者：
WANG Guang-hua, JIN Jian, PAN Xiang-wen, ZHOU Ke-qin, LIU Xiao-bing (Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Harbin 150040, China)
关键词：
Rotation system; Soybean; Rhizosphere; pH; N nutrition
摘  要：
Using rhizobox system to study the soil pH and N nutrition distribution across soybean rhizosphere with different rotation systems soils, the result showed that the soil pH of central compartment (C.C) was relatively alkaline when preceding crops was wheat and maize, and relatively acid when preceding crop was soybean or no crop (fallow soil). The NO~-_3 -N concentration of C.C in all rotation systems was lower than that of 2mm compartment, which indicated that NO~-_3 -N concentration was depleted in soybean rhizosphere. Although the NH~+_4 -N concentration across soybean rhizosphere was affected by different rotation systems less than NO~-_3 -N, the NH~+_4 -N distribution patterns were different among rotation systems, i.e. NH~+_4 -N concentration slightly depleted in the rhizosphere in the monoculture wheat treatment, and a little accumulated in Fallow, W-C-S, S-W-S, W-S-S and monoculture soybean systems. According to this experimental results, we concluded that the soil pH, NO~-_3 -N and NH~+_4 -N concentrations distributed across soybean rhizosphere were greatly influenced by different rotation systems, and suggested that the reason for the barrier of monoculture of soybean may be attributed to the micro-ecology changes in the soybean rhizosphere.

相似文章

导出引用
计量
文章访问数: 8
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46