Abstract:
Objective In order to explore the effects of different amounts of wood vinegar combined with conventional chemical fertilizer on SPAD value, nutrient absorption and accumulation, yield and quality of Maize.
Method The effects of chemical fertilizer combined with wood vinegar on SPAD value, nutrient absorption and accumulation, yield and quality of maize ‘Dihua 159’ were studied by pot experiment.
Result Compared with the control treatment without wood vinegar, the application of chemical fertilizer with different amounts of wood vinegar could increase the SPAD value of maize, promote the absorption of a large number of nutrients, and improve the yield and quality of maize. When 0.3 mL kg−1 wood vinegar was applied together with chemical fertilizer, the absorption and accumulation of nitrogen, phosphorus, potassium and total nutrients of maize plants were the most, which were significantly higher than those of the control treatment, and the protein content was also significantly higher than that of the control treatment (P < 0.05). Although the plant biomass and grain yield of maize were significantly higher than that of 0.4 mL kg−1 wood vinegar (P < 0.05), the crude protein content was lower than that of 0.3 mL kg−1 wood vinegar (P < 0.05)
Conclusion Under the experimental conditions, the biomass and yield of maize were the largest when the amount of wood vinegar was 0.4 mL kg−1. The yield and quality of maize were comprehensively analyzed through the membership function. When the amount of wood vinegar was 0.4 mL kg−1, the comprehensive ranking of maize was the best, and the amount of wood vinegar was significantly positively correlated with the starch content in maize grain (P < 0.01).
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