不同浓度连作相关因子对苗期玉米生长的影响OA

To determine the effects of key factors influencing maize continuous cropping obstacles on seedling growth,a potexperiment was conducted.Five factors were simulated:root exudates,humus,wind-dried material,rhizosphere soil extract,and benzoic acid.Three concentration gradients were established,and the growth and physiological indicators of maize seedlingswere measured.The sensitivity index was used to comprehensively evaluate the intensity of allelopathy.The results showed that the effects of each factor on maize growth were concentration-dependent.Under low-concentration treatments,no significantdifferences were observed compared to the control,while the inhibitory were effects significantly increased under high-concentration treatments.