Special compound microbial fertilizer for corn top dressing

Abstract

Special compound microbial fertilizer for corn top dressing comprises double-strain bacterial fertilizer, potassium humate and urea, and is used for top dressing in a five-leaf stage or a bell stage of corn; double strains subjected to mixed fermentation have a significant synergetic effect; an ear bald rate of the corn can be decreased; the row number per ear, the grain number per row, the grain number per ear and the thousand grain weight of the corn are increased; and the yield is increased by 7.3-21.6% as compared with that of different processing control groups.

Description

technical field

[0001] The invention relates to the technical field of microbial bacterial fertilizer, in particular to a special compound microbial fertilizer for corn topdressing. Background technique

[0002] Corn is the main crop in my country. It likes water and fertilizer. Field management requires topdressing at the 5-leaf stage and bell mouth stage. Urea is commonly used for topdressing corn. Long-term large-scale application of urea will accumulate a large amount of ammonia ions in the soil, resulting in soil pH The increase will reduce the number of beneficial microorganisms, reduce the permeability of the soil and the ability to maintain the balance of nutrients, resulting in poor growth of crops, reduced yield, reduced quality, and increased pesticide residues. The resulting soil pollution is getting worse day by day. The use of chemical fertilizers such as urea, the development of microbial fertilizers, the improvement of crop quality, and the protection of soil h...

Examples

Embodiment 1

[0034] 1. Strain screening

[0035] A wheat rhizosphere soil sample was taken, and an autonomous nitrogen-fixing bacterium, Bacillus megaterium C 2 ( Bacillus megaterium C 2 ), the formula of Ashubei medium (nitrogen-free) is: glucose 10.0g, K 2 HPO 4 ·3H 2 O 0.5 g, NaCl 0.2 g, CaCO 3 1.0g, MgSO 4 ·7H 2 O0.2 g, agar 17.0 g, pH 7.0, dilute to 1 L with deionized water.

[0036] Take the wheat rhizosphere soil sample, and screen out a high-efficiency potassium-dissolving bacterial strain jelly sample through the primary screening of the size of the potassium-dissolving transparent circle produced on the medium containing potassium ore and the re-screening of the size of the potassium-decomposing ability of the liquid shake flask fermentation Bacillus XK ( Paenibacillus mucilaginosus XK), the medium containing potassium ore is: sucrose 10.0g, MgSO 4 7H 2 O0.5g, (NH 4 ) 2 SO 4 0.2g, NaCl0.1g, CaCO 3 0.1g, potassium feldspar powder 5.0g, agar 20.0g, distilled wat...

Embodiment 2

[0047] 1. Strain screening

[0048] A wheat rhizosphere soil sample was taken, and an autonomous nitrogen-fixing bacterium, Bacillus megaterium C 2 ( Bacillus megaterium C 2 ), the formula of Ashubei medium (nitrogen-free) is: glucose 10.0 g, K 2 HPO 4 ·3H 2 O 0.5 g, NaCl 0.2 g, CaCO 3 1.0g, MgSO 4 ·7H 2 O0.2 g, 17.0 g agar, pH 7.0, dilute to 1 L with deionized water.

[0049] Take the wheat rhizosphere soil sample, and screen out a high-efficiency potassium-dissolving bacterial strain jelly sample through the primary screening of the size of the potassium-dissolving transparent circle produced on the medium containing potassium ore and the re-screening of the size of the potassium-decomposing ability of the liquid shake flask fermentation Bacillus XK ( Paenibacillus mucilaginosus XK), the medium containing potassium ore is: sucrose 10.0g, MgSO 4 7H 2 O0.5g, (NH 4 ) 2 SO 4 0.2g, NaCl 0.1g, CaCO 3 0.1g, potassium feldspar powder 5.0g, agar 20.0g, distilled w...

Embodiment 3

[0060] 1. Strain screening

[0061] A wheat rhizosphere soil sample was taken, and an autonomous nitrogen-fixing bacterium, Bacillus megaterium C 2 ( Bacillus megaterium C 2 ), the formula of Ashubei medium (nitrogen-free) is: glucose 10.0 g, K 2 HPO 4 ·3H 2 O 0.5 g, NaCl 0.2 g, CaCO 3 1.0g, MgSO 4 ·7H 2 O0.2 g, 17.0 g agar, pH 7.0, dilute to 1 L with deionized water.

[0062] Take the wheat rhizosphere soil sample, and screen out a high-efficiency potassium-dissolving bacterial strain jelly sample through the primary screening of the size of the potassium-dissolving transparent circle produced on the medium containing potassium ore and the re-screening of the size of the potassium-decomposing ability of the liquid shake flask fermentation Bacillus XK ( Paenibacillus mucilaginosus XK), the culture medium containing potassium ore is: sucrose 10.0g, MgSO 4 7H 2 O0.5g, (NH 4 ) 2 SO 40.2g, NaCl0.1g, CaCO 3 0.1g, potassium feldspar powder 5.0g, agar 20.0g, distil...

technical field

[0001] The invention relates to the technical field of microbial bacterial fertilizer, in particular to a special compound microbial fertilizer for corn topdressing. Background technique

[0002] Corn is the main crop in my country. It likes water and fertilizer. Field management requires topdressing at the 5-leaf stage and bell mouth stage. Urea is commonly used for topdressing corn. Long-term large-scale application of urea will accumulate a large amount of ammonia ions in the soil, resulting in soil pH The increase will reduce the number of beneficial microorganisms, reduce the permeability of the soil and the ability to maintain the balance of nutrients, resulting in poor growth of crops, reduced yield, reduced quality, and increased pesticide residues. The resulting soil pollution is getting worse day by day. The use of chemical fertilizers such as urea, the development of microbial fertilizers, the improvement of crop quality, and the protection of soil h...

Examples

Embodiment 1

[0034] 1. Strain screening

[0035] A wheat rhizosphere soil sample was taken, and an autonomous nitrogen-fixing bacterium, Bacillus megaterium C 2 ( Bacillus megaterium C 2 ), the formula of Ashubei medium (nitrogen-free) is: glucose 10.0g, K 2 HPO 4 ·3H 2 O 0.5 g, NaCl 0.2 g, CaCO 3 1.0g, MgSO 4 ·7H 2 O0.2 g, agar 17.0 g, pH 7.0, dilute to 1 L with deionized water.

[0036] Take the wheat rhizosphere soil sample, and screen out a high-efficiency potassium-dissolving bacterial strain jelly sample through the primary screening of the size of the potassium-dissolving transparent circle produced on the medium containing potassium ore and the re-screening of the size of the potassium-decomposing ability of the liquid shake flask fermentation Bacillus XK ( Paenibacillus mucilaginosus XK), the medium containing potassium ore is: sucrose 10.0g, MgSO 4 7H 2 O0.5g, (NH 4 ) 2 SO 4 0.2g, NaCl0.1g, CaCO 3 0.1g, potassium feldspar powder 5.0g, agar 20.0g, distilled wat...

Embodiment 2

[0047] 1. Strain screening

[0048] A wheat rhizosphere soil sample was taken, and an autonomous nitrogen-fixing bacterium, Bacillus megaterium C 2 ( Bacillus megaterium C 2 ), the formula of Ashubei medium (nitrogen-free) is: glucose 10.0 g, K 2 HPO 4 ·3H 2 O 0.5 g, NaCl 0.2 g, CaCO 3 1.0g, MgSO 4 ·7H 2 O0.2 g, 17.0 g agar, pH 7.0, dilute to 1 L with deionized water.

[0049] Take the wheat rhizosphere soil sample, and screen out a high-efficiency potassium-dissolving bacterial strain jelly sample through the primary screening of the size of the potassium-dissolving transparent circle produced on the medium containing potassium ore and the re-screening of the size of the potassium-decomposing ability of the liquid shake flask fermentation Bacillus XK ( Paenibacillus mucilaginosus XK), the medium containing potassium ore is: sucrose 10.0g, MgSO 4 7H 2 O0.5g, (NH 4 ) 2 SO 4 0.2g, NaCl 0.1g, CaCO 3 0.1g, potassium feldspar powder 5.0g, agar 20.0g, distilled w...

Embodiment 3

[0060] 1. Strain screening

[0061] A wheat rhizosphere soil sample was taken, and an autonomous nitrogen-fixing bacterium, Bacillus megaterium C 2 ( Bacillus megaterium C 2 ), the formula of Ashubei medium (nitrogen-free) is: glucose 10.0 g, K 2 HPO 4 ·3H 2 O 0.5 g, NaCl 0.2 g, CaCO 3 1.0g, MgSO 4 ·7H 2 O0.2 g, 17.0 g agar, pH 7.0, dilute to 1 L with deionized water.

[0062] Take the wheat rhizosphere soil sample, and screen out a high-efficiency potassium-dissolving bacterial strain jelly sample through the primary screening of the size of the potassium-dissolving transparent circle produced on the medium containing potassium ore and the re-screening of the size of the potassium-decomposing ability of the liquid shake flask fermentation Bacillus XK ( Paenibacillus mucilaginosus XK), the culture medium containing potassium ore is: sucrose 10.0g, MgSO 4 7H 2 O0.5g, (NH 4 ) 2 SO 40.2g, NaCl0.1g, CaCO 3 0.1g, potassium feldspar powder 5.0g, agar 20.0g, distil...

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