Effect of compound fertilizer on growth and nutrient uptake of maize by different dosage of humic acid
In order to understand the effects of compound fertilizers without humic acid urea and with different doses of humic acid added on corn growth and nutrient absorption,different fertilizer gradients and fertilizer ratios were set to explore the yield-increasing effect and nutrient utilization efficiency of humic acid fertilizers.Taking corn as the test material,there are nitrogen-free treatment,compound fertilizer treatment,1％o humic acid+compound fertilizer treatment,2％o humic acid+compound fertilizer treatment,3％o humic acid+compound fertilizer treatment,4％o humic acid+compound fertilizer treatment,5％o humic acid+compound fertilizer treatment,6％o humic acid+compound fertilizer treatment,a total of eight fertilization treatments.The test results showed that the 4％o humic acid compound fertilizer increased the yield by 90％compared with the nitrogen-free treatment,had the highest 100-grain quality,and had a starch content of 59.30％,making it the most advantageous treatment.From a comprehensive perspective,in summer corn cultivation,adding 4％o humic acid compound fertilizer is more conducive to increasing corn production,efficiency and storage,and obtaining greater biological yield and economic benefits.
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