4种乔木落叶浸提液对小麦生长及生理特性的影响

doi:10.12190/j.issn.2096-1197.2023.06.04

Abstract

Abstract: 【Objective】The effects of leaf litter leachate of four arbors,Sophora japonica,Salix babylonica,Ulmus pumila,and Betula platyphylla on the growth and physiological characteristics of wheat were studied to provide references for the rational allocation of resources in wheat growth process.【Methods】Using wheat variety Shannong 28 as acceptor material,five treatments of distilled water（CK）,Sophora japonica leaf litter leachate（A1）,Salix babylonica leaf litter leachate（A2）,Ulmus pumila leaf litter leachate（A3）,and Betula platyphylla leaf litter leachate（A4） were set up in the indoor pot experiment. The plant height,root length,ground diameter,leaf chlorophyll content,peroxidase（POD） activity and superoxide dismutase（SOD）activity were measured on the 55th and 100th day after seeding.【Results】On the 55th and 100th day,the wheat plant height under Ulmus pumila leaf litter leachate treatment significantly increased（P<0.05） by 14.11% and 8.31% compared with CK. Wheat root length under Salix babylonica leaf litter leachate treatment significantly increased by 9.65% and 10.14% compared with CK（P<0.05）. All the four leaf litter leachate treatments significantly decreased（P<0.05） wheat ground diameter. On the 55th day,wheat leaf chlorophyll content under Salix babylonica leaf litter leachate treatment significantly increased（P<0.05） by 11.90% compared with CK. On the 100th day,wheat leaf chlorophyll content under Ulmus pumila leaf litter leachate treatment significantly increased（P<0.05） by 7.03% compared with CK. On the 55th and 100th day,wheat leaf POD activity under Betula platyphylla leaf litter leachate treatment significantly increased（P<0.05） by 0.88% and 3.22% compared with CK,wheat leaf SOD activity under Salix babylonica leaf litter leachate treatment significantly increased（P<0.05） by 13.78% and 9.68% compared with CK. At 55 d and 100 d growth,wheat was most sensitive to the allelopathy of Salix babylonica and Ulmus pumila leaf litter leachate treatment.【Conclusion】The leaf litter leachate of Salix babylonia and Ulmus pumila had strong allelopathic effects on wheat growth,promoted the secretion of specific metabolites of wheat,and changed the surrounding micro ecological environment.

Key words: Arbor leaf litter, Leachate, Wheat, Allelopathy

CLC Number:

S792

GENG Jian, WU Honghua, ZHOU Jian. Effects of four arbors leaf litter leachate on the growth and physiological characteristics of wheat[J].Journal of Northern Agriculture, 2023, 51(6): 28-36.

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Effects of four arbors leaf litter leachate on the growth and physiological characteristics of wheat

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