AN Si-wei,FU Jian,YANG Ke-jun,et al.Effects of Different Tillage and Straw Returning Treatments on Rhizosphere Soil Nutrients and Maize Yield[J].HEILONGJIANG AGRICULTURAL SCIENCES,2021,(08):1-7.[doi:10.11942/j.issn1002-2767.2021.08.0001]
不同耕作和秸秆还田方式对根际土壤养分及玉米产量的影响
- Title:
- Effects of Different Tillage and Straw Returning Treatments on Rhizosphere Soil Nutrients and Maize Yield
- Keywords:
- semiarid region; tillage; straw returning; soil nutrient; maize yield
- 文献标志码:
- A
- 摘要:
- 为了优化黑龙江省西部半干旱区玉米耕作技术体系,以春玉米品种东旭20为供试材料,开展长期定位试验,设置4种耕作和还田处理,分别为常规垄作旋耕(CK),免耕秸秆移除(T1),免耕+覆盖还田(T2),垄作+碎混还田(T3),分别于拔节期、抽雄期、灌浆期和成熟期取样,测定玉米根际土壤养分及玉米产量,研究不同耕作和还田处理对根际土壤养分及玉米产量的影响。结果表明:与CK相比,T1处理可提高不同生育时期根际土壤有机质、全氮、碱解氮、速效磷和速效钾含量;T2处理可提高不同生育时期根际土壤有机质含量、全氮和碱解氮含量,抽雄期和成熟期的根际土壤速效磷含量,灌浆期的根际土壤速效钾含量;T3处理可提高不同生育时期根际土壤有机质、全氮和速效磷含量,抽雄期、灌浆期和成熟期根际土壤碱解氮和速效钾含量。玉米平均产量表现为T2>T3>CK>T1,各处理间差异不显著。综上可知,T2处理是相对较好的耕作秸秆还田方式。
- Abstract:
- In order to perfect the maize tillage technology system in the semi-arid area of Heilongjiang Province,taking spring maize variety Dongxu 20 as the test material,long-term positioning tests were carried out,4 kinds of tillage and straw returning methods were set up,respectively,including conventional rotary tillage(CK),no-tillage straw removed (T1),no-tillage + whole straw crushing mulch returning to the field(T2),and ridge tillage+whole straw broken mixture returning to the field (T3).Samples were taken at jointing stage,tasseling stage,filling stage and mature stage to determine the rhizosphere soil nutrients and maize yield,and study the effects of different tillage and straw returning treatments on rhizosphere soil nutrients and maize yield.The results showed that compared with CK treatment,T1 treatment could increase the contents of rhizosphere soil organic matter,total nitrogen,alkali-hydrolytic nitrogen,available phosphorus and available potassium at different growth stages;T2 treatment can increase the contents of rhizosphere soil organic matter,total nitrogen and alkali-hydrolytic nitrogen at different growth stages,the content of rhizosphere soil available phosphorus at tasseling stage and mature stage,and the content of soil available potassium at filling stage;T3 treatment could increase the contents of rhizosphere soil organic matter,soil total nitrogen and available phosphorus at different growth stages,and the contents of rhizosphere soil alkali-hydrolyzed nitrogen and available potassium at tasseling stage,filling stage and mature stage.The average yield of maize was T2>T3>CK>T1,there was no significant difference among treatments.In conclusion,T2 treatment is a relatively better tillage and straw returning method.
参考文献/References:
[1]张宇飞.耕作方式与秸秆还田对玉米产量及养分吸收的影响[D].哈尔滨:东北农业大学,2019.[2]丛聪.耕作方式及有机物还田对黑土坡耕地土壤物理性质和玉米生长的影响[D].北京:中国农业科学院,2019.
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备注/Memo
收稿日期:2020-04-20