High-activity nitro humic acid compound fertilizer and preparation method thereof
A technology of nitro humic acid and compound fertilizer, which is applied in the field of highly active nitro humic acid compound fertilizer and its preparation, can solve the problems of long aging time and incomplete activation of lignite, achieve short aging time and improve compaction degree, the effect of promoting plant growth
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Embodiment 1
[0024] Example 1: Selection of aging time
[0025] 1. Preparation of nitrohumic acid compound fertilizer
[0026] (1) Activated brown coal: Put 5 parts of brown coal into the reactor, add 0.001 part of rhamnolipid, and then add 10 parts of dilute nitric acid with a concentration of 15%, turn on the stirring device of the reactor, and rotate at 16000~20000r / min , Control the temperature at 85~90℃, and carry out the oxidation reaction for 2h.
[0027] (2) Aging: After the oxidation reaction is completed, ammonium bicarbonate is added to adjust the pH to 6.5. Divide the activated lignite into 8 groups, and then carry out the aging reaction, aging respectively 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20h (respectively corresponding to groups 1-10), and obtain nitrate Base humic acid in each group.
[0028] (3) Preparation of fermentation filler: Dilute Bacillus amyloliquefaciens with water to an effective bacteria content of 1×10 7 With a cfu / ml bacterial suspension, inoculate 1 part of the bact...
Embodiment 2
[0038] Example 2: Comparison with common nitro humic acid compound fertilizer
[0039] 1. Preparation of nitro humic acid compound fertilizer (test group)
[0040] (1) Activated brown coal: Put 5 parts of brown coal into the reactor, add 0.001 part of rhamnolipid, and then add 10 parts of dilute nitric acid with a concentration of 15%, turn on the stirring device of the reactor, and rotate at 16000~20000r / min , Control the temperature at 85~90℃, and carry out the oxidation reaction for 2h.
[0041] (2) Aging: After the oxidation reaction is completed, ammonium bicarbonate is added to adjust the pH to 6.5. Then carry out the aging reaction, aging for 4.5h, to obtain nitrohumic acid.
[0042] (3) Preparation of fermentation filler: Dilute Bacillus amyloliquefaciens with water to an effective bacteria content of 1×10 7 With a cfu / ml bacterial suspension, 1 part of the bacterial suspension is inoculated into 350 parts of organic fertilizer (fresh cow dung: bean cake: straw meal = 10:4:1)...
Embodiment 3
[0056] Example 3: Demonstration of the effect of nitrohumic acid compound fertilizer
[0057] 1. Preparation of nitrohumic acid compound fertilizer
[0058] (1) Activated lignite: Divide the lignite into 5 groups (groups 1 to 5), put them into the reactor, add 0.001 parts of rhamnolipid respectively, and then add 15% dilute nitric acid, and turn on the stirring of the reactor The device has a rotation speed of 16000 to 20000 r / min, a control temperature of 85 to 90°C, and an oxidation reaction for 2 hours.
[0059] (2) Aging: After the oxidation reaction is completed, ammonium bicarbonate is added separately to adjust the pH to 6.5. Then carry out the aging reaction, aging for 4.5h, to obtain nitrohumic acid.
[0060] (3) Preparation of fermentation filler: Dilute Bacillus amyloliquefaciens with water to an effective bacteria content of 1×10 7 With a cfu / ml bacterial suspension, 1 part of the bacterial suspension is inoculated into 350 parts of organic fertilizer (fresh cow dung: bea...
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