Effects of film-stalk spaced dual mulching system on corn growth and yield  

作　　者：CAO Jinjun SUN Yaqi PENG Shuili LI Wanxing HE Xiaobing LI Xiaoxia LI Dan JIN Kunpeng YANG Yi LIU Yongzhong 

机构地区：[1]Shanxi Agricultural University/Shanxi Academy of Agricultural Sciences,Millet Research Institute,Changzhi 046011,China [2]College of Agriculture,Shanxi Agricultural University(Institute of Crop Science),Taigu 030801,China [3]Shanxi Agricultural Machinery Development Center,Taiyuan 030002,China

出　　处：《Journal of Arid Land》2024年第12期1714-1729,共16页干旱区科学（英文版）

基　　金：financially supported by the Projects of National Key Research and Development Program of China(2021YFD1901101-5);the Special Major Research and Development Project of Shanxi Province(202101140601026-5);the Earmarked Fund for Modern Agro-industry Technology Research System(2023CYJSTX01-11).

摘　　要：Film-stalk spaced dual mulching is a new type of cultivation measure that is increasingly highlighted in semi-arid areas in China.Despite its potential,there is limited understanding of how different mulching materials affect both soil quality and crop yield in these areas.To address this gap,we conducted a two-year(2020-2021)field experiment in central China to explore the yield-enhancing mechanisms and assess the impact of various mulching materials on soil and corn yield.The experiment comprised six treatments,i.e.,plastic film-whole stalk spaced mulching in fall(PSF),plastic film-whole stalk spaced mulching in spring(PSS),black and silver plastic film-whole stalk spaced mulching in spring(BPSS),biodegradable film-whole stalk spaced mulching in spring(BSS),liquid film-whole stalk spaced mulching in spring(LSS),and non-mulching cultivation(CK).Results revealed that BPSS demonstrated the most significant yield increase,surpassing CK by a notable 10.0%and other mulching treatments by 2.4%-5.9%.The efficacy of BPSS lied in its provision of favorable hydrothermal conditions for corn cultivation,particularly during hot season.Its cooling effect facilitated the establishment of optimal temperature conditions relative to transparent mulching,leading to higher root growth indices(e.g.,length and surface area),as well as higher leaf photosynthetic rate and dry matter accumulation per plant.Additionally,BPSS maintained higher average soil moisture content within 0-100 cm depth compared with biodegradable mulching and liquid mulching.As a result,BPSS increased activities of urease,catalase,and alkaline phosphatase,as well as the diversity and abundance of soil bacteria and fungi in the rhizosphere zone of corn,facilitating nutrient accessibility by the plant.These findings suggest that selecting appropriate mulching materials is crucial for optimizing corn production in drought-prone areas,highlighting the potential of BPSS cultivation.

关 键 词：film-stalk spaced dual mulching black plastic film cover CORN yield conservational tillage system 

分 类 号：S513[农业科学—作物学]