Effects of Combined Application of Biogas Manure and Chemical Fertilizer on Physiological and Agronomic Characteristics of Spring Maize Seedings
Maize of ZHENGDAN 985 was chosen as experimental material.Seven treatments were set up with different ratio of biogas fertilizer and chemical fertilizer.The agronomic and physiological indices of maize seeding,including the height,the leaf age(LA),leaf area index(LM),free amino acids,proliner,relative electric conductivity,F0,Fp/Fm,were studied.The results showed that the A2 treatment (biogas fertilizer:chemical fertilizer was 80% ∶ 20%) obtained a significant improvement in agronomic traits.Comparing with the control,its fresh and dry weight increased 100% and 157.47% respectively,the leaf area index(LM) enlarged by 25.22%,other physiological characteristics,such as relative electric conductivity,free amino acids,F0,Fp/Fm,proliner,etc,were improved as well.