ACTA AGRICULTURAE BOREALI-SINICA ›› 2020, Vol. 35 ›› Issue (S1): 306-314. doi: 10.7668/hbnxb.20191713

Special Issue: Soil fertilizer

• Resources and Environment·Plant Protection • Previous Articles     Next Articles

Effects of Subsoiling in Alternate Years on Soil Properties, Root Activity and Water Use Efficiency

YAN Weiping, ZHANG Lihua, XU Chen, ZHAO Hongxiang, TAN Guobo, SUN Ning, LI Fei, BIAN Shaofeng   

  1. Jilin Academy of Agricultural Sciences, Crop Water Efficient Scientific Observation Experiment Stations at Gongzhuling of Ministry Agriculture and Rural Affairs, Changchun 130033, China
  • Received:2020-09-07 Published:2020-12-28

Abstract: The effects of subsoiling in alternate years on soil structure,root activity and water use efficiency(WUE)were studied in order to promote the improvement of soil comprehensive productivity and yield.This study was conducted from 2015 to 2016.The experiment was conducted with five treatments,they were 30 cm subsoiling before spring sowing(SS-30),40 cm(SS-40)before spring sowing,30 cm(AS-30)between rows after autumn harvest,and 40 cm(AS-40)between rows after autumn harvest and no subsoiling(CK).In order to studied the effects of subsoiling in alternate years on soil penetration resistance,bulk density,water content,root activity,yield and WUE.The results showed that subsoiling in alternate years significantly reduced soil penetration resistance and bulk density,significantly increased soil moisture content from subsoiling site to surface,significantly increased root activity,and significantly increased yield and WUE.Compared with CK,the active specific surface areas of AS-40,SS-40,AS-30 and SS-30 increased by 2.47%,1.85%,1.32% and 0.62%,respectively.The root activity of AS-40,SS-40,AS-30 and SS-30 increased by 20.37%,18.23%,7.83% and 5.92%,respectively.The WUE of SS-40,SS-30,AS-40 and AS-30 increased by 2.02%,6.05%,7.26% and 12.90%,respectively.It is considered that interval subsoiling can effectively improve the soil structure,enhance the ability of water and soil moisture conservation.Subsoiling in autumn has the best effect on soil improvement.Increasing the depth of subsoiling can effectively improve the effect of subsoiling,but the subsoiling effect will gradually weaken with the passage of time.

Key words: Subsoiling, Soil penetration resistance, Soil bulk density, Roots activity, Water use efficiency, Yield

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Cite this article

YAN Weiping, ZHANG Lihua, XU Chen, ZHAO Hongxiang, TAN Guobo, SUN Ning, LI Fei, BIAN Shaofeng. Effects of Subsoiling in Alternate Years on Soil Properties, Root Activity and Water Use Efficiency[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2020, 35(S1): 306-314. doi: 10.7668/hbnxb.20191713.

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