浙江农业学报 ›› 2018, Vol. 30 ›› Issue (2): 268-274.DOI: 10.3969/j.issn.1004-1524.2018.02.13

• 环境科学 • 上一篇    下一篇

玉米秸秆还田模式对土壤肥力和玉米产量的影响

萨如拉1, 杨恒山1, *, 高聚林2, 范富1, 张瑞富1, 刘晶1, 吴帅1   

  1. 1. 内蒙古民族大学 农学院,内蒙古自治区饲用作物工程技术研究中心,内蒙古 通辽 028000;
    2. 内蒙古农业大学 农学院,内蒙古 呼和浩特 010018
  • 收稿日期:2017-06-29 出版日期:2018-02-20 发布日期:2018-02-11
  • 通讯作者: 杨恒山,E-mail:yanghengshan2003@aliyun.com
  • 作者简介:萨如拉(1982—),女,内蒙古通辽人,博士,讲师,主要从事农业资源高效利用方面的研究。E-mail:sarula21@sohu.com
  • 基金资助:
    国家科技支撑计划(2013BAD07B04); 内蒙古民族大学博士科研启动基金(BS329)

Effects of maize straw returning modes on soil fertility and maize yield

SA Rula1, YANG Hengshan1, *, GAO Julin2, FAN Fu1, ZHANG Ruifu1, LIU Jing1, WU Shuai1   

  1. 1. College of Agronomy, Inner Mongolia University for the Nationalities, Inner Mongolia Engineering Research Center of Forage Crop, Tongliao 028000, China;
    2. Agricultural College, Inner Mongolia Agricultural University, Hohhot 010018, China
  • Received:2017-06-29 Online:2018-02-20 Published:2018-02-11

摘要: 为探讨西辽河平原灌区玉米秸秆还田适宜模式,于2016年在连作玉米田设深翻秸秆还田(DR)、旋耕秸秆还田(RR)、深翻秸秆还田施用腐熟剂(DR+D)和旋耕秸秆还田施用腐熟剂(RR+D)4个处理,以旋耕不还田(CK)为对照,研究不同还田模式对土壤速效养分、土壤酶活性和玉米产量的影响。结果表明:RR+D和RR分别较CK增产24.56%和28.00%,DR和DR+D产量与CK无显著差异。RR+D处理显著(P<0.05)提高了表层(0~10 cm)土壤碱解氮含量(增幅94.56%),其他处理表层土壤速效养分含量与CK无显著差异。各秸秆还田处理可不同程度提高不同土层土壤酶的活性。综合来看,该地区以旋耕秸秆还田施用腐熟剂模式的效果较好。

关键词: 秸秆还田, 腐熟剂, 产量, 土壤速效养分, 土壤酶活性

Abstract: In order to explore the suitable mode of maize straw returning in west Liaohe Plain, 4 modes, i.e. deep plowing with straw returning (DR) , rotary tillage with straw returning (RR), applying decomposing agent+deep plowing with straw returning (DR+D) and applying decomposing agent+rotary tillage with straw returning (RR+D) were proposed. By taking rotary tillage without straw returning (CK) as control, effects of 4 modes on soill available nutrients, soil enzyme activity and maize yield were compared in 2016. It was shown that RR+D and RR increased maize yield by 24.56% and 28.00%, respectively, as compared to CK, yet there was no significant difference within the yield of DR, DR+D and CK. RR+D significantly (P<0.05) increased the alkaline nitrogen content in 0-10 cm soil layer by 94.56% than CK, while the other treatments showed no significant difference in soil available nutrients contents. All 4 maize straw returning modes could increase soil enzymes activities in different soil depth by varied degrees. On the whole, applying decomposing agent+rotary tillage with straw returning was the optimum mode in the study area.

Key words: straw returning, decomposing agent, yield, soil available nutrient, soil enzyme activity

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