Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Doctorat → Chine → 2020 → Effects of Structural Variation on Wheat Productivity and Soil Quality and Its Mechanism under Ridge-furrow Mulching Farming System in Semiarid East African Plateau

Lanzhou University (2020)

Effects of Structural Variation on Wheat Productivity and Soil Quality and Its Mechanism under Ridge-furrow Mulching Farming System in Semiarid East African Plateau

罗崇亮;

Titre : Effects of Structural Variation on Wheat Productivity and Soil Quality and Its Mechanism under Ridge-furrow Mulching Farming System in Semiarid East African Plateau

Auteur : 罗崇亮;

Grade : Doctoral Dissertation 2020

Université : Lanzhou University

Résumé partiel
The ridge-furrow with mulching system(RFM)has a significant effect on improving crop productivity in semi-arid area.But crop productivity has affected by the changing of the RFM system structural factors,including the ridge-furrow size,mulching material,mulching pattern,planting density and soil nutrients.The coupling relationship between productivity and the structure of RFM system is a hot spot in agroecology.It involves the basic scientific issues to adopt land management and large-scale application for farmers in RFM system,which has not yet been reported,especially in semi-arid rainfed region of eastren Africa Plateau(EAP).In this study,field experiment with four growing seasons was conducted in Juja,a typical semiarid site of Kenya from 2015 to 2017.It comprises four relatively independent but closely related field experiments:1)wheat productivity respond mechanisms,soil hydrothermal regulative mechanisms and soil quantity under different mulching materials and mulching patterns ;2)allometric relationship and yield formation in response to planting density under ridge-furrow plastic mulching in rainfed wheat ;3)wheat productivity responses and hydrothermal regulative mechanisms under different ridge-furrow sizes ;4)the effects of nitrogen and phosphorus addition on wheat productivity and soil quality under ridge-furrow with mulching plastic.The objectives of this study are to evaluate the quantitative relationship between wheat productivity,water use efficiency and soil physicochemical properties with RFM system structural changes.The main conclusion is as follows:1.Wheat productivity and soil hydrothermal status under different mulching materials and mulching patterns.The experiment was a randomized block design with three replicates for each treatment.Mulching treatments included as follows:1)furrows mulched with wheat straw and ridges mulched with black plastic film(RFbS),2)furrows mulched with wheat straw and ridges mulched with transparent plastic film(RFtS),3)furrows unmulched and ridges mulched with black plastic film(RFB),4)furrows unmulched and ridges mulched with transparent plastic film(RFW)and 5)furrows and ridges both mulched with wheat straw(RFS).No mulching in RF was used as control group(CK)

Mots clés : Ridge-furrow mulching; soil water and temperature; wheat productivity; water use efficiency; soil quality;

Présentation (CNKI)

Page publiée le 5 juin 2021, mise à jour le 22 octobre 2021