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中国农学通报 ›› 2017, Vol. 33 ›› Issue (29): 19-24.doi: 10.11924/j.issn.1000-6850.casb16090053

所属专题: 油料作物 水稻 马铃薯

• 农学 农业基础科学 • 上一篇    下一篇

稻草覆盖对花生木薯间作系统产量和土壤性状的影响

徐小林1,2,吴昌强1,李大明1,2,胡志华1,柳开楼1,周利军1,叶会财1,黄欠如1,2   

  1. (1江西省红壤研究所,南昌 330046;2国家红壤改良工程技术研究中心,江西进贤 331717)
  • 收稿日期:2016-09-12 修回日期:2016-11-11 接受日期:2016-11-26 出版日期:2017-10-24 发布日期:2017-10-24
  • 通讯作者: 徐小林
  • 基金资助:
    国家科技支撑计划项目“养分资源可再生多级生物利用技术研究”(2009BADC6B04);中科院知识创新工程重大项目“红壤旱地花生//木薯覆盖技术研究”(KSCX1-YW-09-08)。

Effects of Straw Mulching on Yield and Soil Properties of Cassava Intercropping System

Xu Xiaolin1,2, Wu Changqiang1, Li Daming1,2, Hu Zhihua1, Liu Kailou1,   

  1. Zhou Lijun1, Ye Huicai1, Huang Qianru1,2(1Jiangxi Institute of Red Soil, Nanchang 330046; 2National Engineering and Technology Research Centre for Red Soil Improvement, Jinxian Jiangxi 331717)
  • Received:2016-09-12 Revised:2016-11-11 Accepted:2016-11-26 Online:2017-10-24 Published:2017-10-24

摘要: 研究了稻草覆盖对丘陵红壤旱地作物产量提升及土壤改良的效果,以期为南方丘陵红壤旱地土壤培肥、改良及稻草资源合理利用提供指导。通过设置不覆盖稻草、稻草覆盖和稻草覆盖+腐秆菌3个处理,分析了不同稻草覆盖对作物产量、土壤水分、土壤生物活性及土壤速效养分等指标的影响。结果表明:稻草覆盖能显著提高花生、木薯产量,而添加腐秆菌对花生、木薯产量增产效果不明显;稻草覆盖可明显促进土壤速效养分的积累,其中以速效钾提高最大,并显著提高土壤生物活性;稻草覆盖能明显提高土壤含水量,但主要影响0~20 cm土层土壤含水量。本试验条件下,稻草覆盖能显著提高作物产量,若增施腐秆菌可加速稻草秸秆的腐解,促进土壤速效养分的积累。

关键词: 土壤有机质, 土壤有机质, 高光谱, 土壤颗粒, 偏最小二乘回归, 支持向量机

Abstract: In order to provide guidance for the rational utilization of soil fertility, improvement and utilization of rice straw in hilly red soil region of southern China, a research was conducted to study the effect of straw mulching on crop yield and soil improvement in hilly red soil. Three treatments ( no covered straw, straw mulching and straw mulching rot fungus) were set to analyse the effects of different straw mulching on crop yield, soil moisture, soil biological activity and soil available nutrients. Results showed straw mulching significantly increased the peanut and cassava yield in the crop system, however the straw mulching rot fungus treat had little effect in yield increase. Straw mulching significantly increased the available nutrient accumulation, and available potassium content increased significantly, which performed much more obviously with rot fungus application. Straw mulching significantly increased the soil moisture,but mainly wroked in the 0-20 cm layer. In this experiment, Straw mulching could significantly increase crop yield, and straw rot fungus application could accelerate the decomposition of rice straw and promote the accumulation of soil available nutrients.