湖北农业科学 ›› 2021, Vol. 60 ›› Issue (8): 46-49.doi: 10.14088/j.cnki.issn0439-8114.2021.08.009

• 资源·环境 • 上一篇    下一篇

苦豆子绿肥的腐解和养分释放研究

张朝阳1,2, 王林娜3, 王蒙1, 席琳乔1,2   

  1. 1.塔里木大学动物科学学院/新疆生产建设兵团塔里木畜牧科技重点实验室,新疆 阿拉尔 843300;
    2.吐鲁番职业技术学院,新疆 吐鲁番 838000
  • 收稿日期:2020-06-28 发布日期:2021-05-07
  • 通讯作者: 席琳乔(1978-),男,甘肃镇原人,教授,博士,主要从事牧草及绿肥栽培与利用研究,(电子信箱)gsxlq666@163.com。
  • 作者简介:张朝阳(1996-),男,新疆库尔勒人,硕士,主要从事饲料资源开发与利用研究,(电话)15739295217(电子信箱)zcyang199@163.com
  • 基金资助:
    新疆生产建设兵团促进科技成果转化引导计划项目(2018AB037); 国家重点研发计划项目(2016YFC0501407)

Determination the manure decomposition and nutrient release the Sophora alopecuroides

ZHANG Chao-yang1,2, WANG Lin-na3, WANG Meng1, XI Lin-qiao1,2   

  1. 1. College of Animal Science, Tarim University/Key Laboratory of Tarim Animal Husbandry Science and Technology,Xinjiang Production and Construction Groups, Alar 843300,Xinjiang,China;
    2. Turpan Vocational Technical College,Turpan 838000,Xinjiang,China
  • Received:2020-06-28 Published:2021-05-07

摘要: 以营养期至初花期苦豆子(Sophora alopecuroides)为试验材料,用尼龙袋法研究苦豆子绿肥在土壤中的腐解规律和C、N、P、K养分的释放规律。结果表明,经过118 d的腐解,绿肥中N、P矿化率逐步增加,C矿化率为66.59%;K在0~7 d矿化迅速,矿化率为55.46%,至118 d共矿化79.06%。C/N在0~14 d呈下降趋势,14~118 d逐渐平稳,养分矿化率表现为K>C>P>N。在118 d苦豆子绿肥干物质(DM)腐解量达65.2%,C、N、P、K矿化率分别达62.75%、44.93%、52.54%和79.06%,其中,0~14 d为快速分解阶段、14~28 d为减慢分解阶段、28~118 d为缓慢分解阶段。苦豆子绿肥的干物质降解与养分释放基本同步,且呈正相关。

关键词: 苦豆子(Sophora alopecuroides), 绿肥, 腐解

Abstract: The decomposition law of green manure and the nutrient release law of C, N, P and K in soil of Sophora alopecuroides during vegetative period and early flowering period were studied by nylon bag method. The results showed that after 118 days of decomposition, the mineralization rate of N and P in green manure increased gradually, and the mineralization rate of C in green manure was 66.59%. K mineralized rapidly from 0 to 7 days, with a mineralization rate of 55.46%, and mineralized 79.06% at 118 days. C/N showed a downward trend from 0 to 14 days, and became gradually stabilized from 14 to 118 days, and the nutrient mineralization rate was K>C>P>N. On 118 days, the dry matter(DM) decomposition of green manure reached 65.2%, and the mineralization rates of C, N, P and K reached 62.75%, 44.93%, 52.54% and 79.06%, respectively. Among them, 0~14 d was the rapid decomposition stage, 14~28 d was the slow decomposition stage, and 28~118 d was the slow decomposition stage. The dry matter degradation and nutrient release of Sophora alopecuroides green manure were basically synchronized and positively correlated.

Key words: Sophora alopecuroides, green manure, decomposing

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