Plastic mulch increases dryland wheat yield and water-use productivity,while straw mulch increases soil water storage  

作　　者：Hubing Zhao Guanfei Liu Yingxia Dou Huimin Yang Tao Wang Zhaohui Wang Sukhdev Malhi Adnan Anwar Khan 

机构地区：[1]College of Natural Resources and Environment,Northwest A&F University,Yangling 712100,China [2]Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China,Ministry of Agriculture and Rural Affairs,Yangling 712100,China [3]Department of Renewable Resources,University of Alberta,Edmonton T6G 2H1,Canada

出　　处：《Journal of Integrative Agriculture》2024年第9期3174-3185,共12页农业科学学报（英文版）

基　　金：supported by the National Key R&D Program of China(2021YFD1900703);the National Natural Science Foundation of China(31272250).

摘　　要：Amplifying drought stress and high precipitation variability impair dryland wheat production.These problems can potentially be minimized by using plastic mulch(PM)or straw mulch(SM).Therefore,wheat grain yield,soil water storage,soil temperature and water-use productivity of PM and SM treatments were compared with no mulch(CK)treatment on dryland wheat over a period of eight seasons.Compared to the CK treatment,PM and SM treatments on average significantly increased grain yield by 12.6 and 10.5%,respectively.Compared to the CK treatment,SM treatment significantly decreased soil daily temperature by 0.57,0.60 and 0.48℃ for the whole seasons,growing periods and summer fallow periods,respectively.In contrast,compared to the CK treatment,PM treatment increased soil daily temperature by 0.44,0.51 and 0.27℃ for the whole seasons,growing periods and summer fallow periods,respectively.Lower soil temperature under SM allowed greater soil water storage than under PM.Soil water storage pre-seeding was 17%greater under the SM than under the PM treatment.Soil water storage post-harvest was similar for the PM and SM treatments,but evapotranspiration was 4.5%higher in the SM than in the PM treatment.Consequently,water-use productivity was 6.6%greater under PM than under the SM treatment.Therefore,PM treatment increased dryland wheat yield and water-use productivity,while straw mulch increased soil water storage.

关 键 词：plastic mulch soil water storage straw mulch water-use productivity winter wheat 

分 类 号：S512.1[农业科学—作物学]