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Expansion of Field Margin Size Mitigate the Hazard of Rotary Tillage to Earthworm in Rice-Rape Rotation System

文献类型: 外文期刊

作者: Li, Chao 1 ; Zhao, Yang 3 ; Cheng, Kaikai 2 ; Zhou, Junyu 2 ; Xiao, Xiaoping 2 ; Iqbal, Anas 4 ; Tang, Haiming 2 ; Huang, Min 1 ;

作者机构: 1.Hunan Agr Univ, Minist Educt Crop Physiol & Mol Biol, Rice & Prod Ecophysiol, Key Lab, Changsha 410128, Peoples R China

2.Hunan Acad Agr Sci, Soil & Fertilizer Inst, Changsha 410125, Peoples R China

3.Hunan Acad Agr Sci, Rice Res Inst, Changsha 410125, Peoples R China

4.South China Agr Univ, Coll Agr, State Key Lab Conservat & Utilizat Agrobioresouec, Guangzhou 510642, Peoples R China

关键词: rape-rice; flooding; earthworm; field margin size; rotary tillage

期刊名称:AGRONOMY-BASEL ( 影响因子:3.949; 五年影响因子:4.117 )

ISSN:

年卷期: 2022 年 12 卷 9 期

页码:

收录情况: SCI

摘要: Field margin (FM) provides refuges for earthworm survival in rape-rice system after flooding, while the effects of FM with different size on earthworm in arable field (AF) is unclear. In this study, we investigated the effects of different FM sizes, a conventional size (FM I) and three expanding sizes (FM II, FM III, FM IV), on earthworm population characteristics in FM and AF. The results showed that the mean abundance of earthworm under the expanding sizes at 1 day and 60 day of flooding after rape harvest was 16.5 and 20.2 times higher than that of FM I, respectively. After stopping flooding, juveniles first migrated from FM to AF, whereas more than half of them were killed by subsequent rotary tillage, and the mortality decreased with expanding FM size. Subsequently, expanding FM sizes promoted earthworm to distribute evenly through the AF at faster speeds. At rape maturity, the mean abundance and total biomass of earthworm of AF under expanding FM sizes were significantly greater than that of FM I, and this positive effect increased with expanding FM size. The results indicated that expanding FM size can mitigate the hazard of rotary tillage to earthworm and promote rapid recovery of earthworm population in AF.

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