Effect of Trace Irrigation on the Relationship Between Root Vigour,Biomass Accumulation and Water Supply in Cotton
To address the problems of water shortage and water inefficiency in cotton field production in the Alashan region of In-ner Mongolia.Trace irrigation was used,and it was proposed to reveal the response mechanisms of cotton growth and development and water use efficiency to field water supply methods under trace irrigation.[Method]The effect of trace irrigation on the vigour and biomass accumulation of cotton roots was investigated in a field plot experiment with different burial depths and water volumes.[Result] Cotton root biomass showed an"S"type curve continuous growth;from the seedling stage to the spatulation stage,cotton root biomass showed an increase trend.The trace irri-gation treatments all increased the root vigour of cotton compared with the sub-membrane drip irrigation (CK) treatment.T1 treatment had the highest root vigour,which helped to promote root undergrowth and create a reasonable root structure.[Conclusion]The bud stage and flowering and boll stage are the rapid growth periods of plants,and irrigation water supply is the key to growth water consumption during supporting peri-od.
万方数据
维普
