Journal of Northern Agriculture ›› 2023, Vol. 51 ›› Issue (2): 22-32.doi: 10.12190/j.issn.2096-1197.2023.02.03

• Soil and fertilizer·Horticulture • Previous Articles     Next Articles

Effects of tillage methods on Inner Mongolia dry farming regions soil moisture,temperature and maize yield

CHENG Zhipeng1, ZHANG Chengze1, WANG Fugui1, WANG Zhen1, ZHANG Yuezhong2, YAN Liwei3, LIANG Hongwei1, YANG Zhihong1, GAO Julin1, WANG Zhigang1   

  1. 1. Inner Mongolia Agricultural University,Hohhot 010010,China;
    2. Hinggan League Jalaid Banner Agriculture and Animal Husbandry,Science and Technology Bureau,Jalaid Banner 137400,China;
    3. Chifeng City Agricultural Technology Service Center,Chifeng 024000,China
  • Received:2023-02-27 Online:2023-04-20 Published:2023-07-05

Abstract: 【Objective】Investigate the effects of different tillage methods on soil moisture,heat dynamics as well as maize dry matter accumulation and yield,to provide theoretical support for maize production in dry farming regions of Inner Mongolia.【Methods】Using random block design,four tillage methods were set up,including conventional ridge cropping(CP),straw off-field no-tillage(NT),straw mulching no-tillage(RNT),and straw mulching strip tillage(RST). Throughout the maize growth stages in 2021—2022,the soil temperature,soil moisture content and maize dry matter accumulation were monitored and measured. Yield was determined at harvest.【Results】Compared with CP,NT,RNT and RST reduced the average soil temperature and 0-5 cm soil active accumulated temperature in the maize growth stages. The 0-5 cm average soil active accumulated temperature of NT and RNT significantly decreased by 69.81 and 127.52 ℃(P<0.05),respectively in the two years,while RST only decreased by 18.94 ℃ with no significant difference(P>0.05). RNT and RST significantly increased soil water content during the maize growth period,with RNT increasing 107.75 and 74.14 mm and RST increasing 71.50 and 37.89 mm compared to CP and NT,respectively. RST increased maize emergence by an average of 1.58%,9.28% and 9.11% compared to NT,CP and RNT respectively. Both dry matter accumulation and yield at maize maturity stage were RST>NT>CP>RNT in the two years. In comparison to CP,NT and RNT,the dry matter accumulation in RST increasing by 11.68%,4.47% and 12.69%,yield increased by 6.06%,4.22% and 7.21%,and water use efficiency(WUE) increased by 7.63%,5.61% and 6.52%,respectively.【Conclusion】Straw mulching strip tillage had better effect in temperature increasing and soil moisture preserving,significantly increased maize dry matter accumulation and yield,was one of the tillage methods to increase maize yield and efficiency in dry farming regions of Inner Mongolia.

Key words: Inner Mongolia, Dry farming regions, Straw mulching strip tillage, Soil moisture and temperature, Maize, Yield

CLC Number: 

  • S513