Tillage and irrigation increase wheat root systems at deep soil layer and grain yields in lime concretion black soil.

ABSTRACT: In lime concretion black soil, a two-factor (tillage and irrigation) split block experiment from 2015 to 2017 was conducted to identify whether their combination is suitable for the improvement of winter wheat yield and water use efficiency. The main treatments were subsoiling (SS) and rotary tillage (RT), with secondary treatments of three irrigation regimes: no irrigation during the whole growth period (W0), irrigation at jointing stage (W1), and irrigation at both jointing and anthesis stages (W2). In combination with a soil column experiment, the contribution of the root system in different soil layers to yield was clarified. The results indicated that both tillage and irrigation significantly influenced the spatiotemporal distributions of the root systems and yield components, while t

SUBMITTER: Wang J 

PROVIDER: S-EPMC7973502 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature