Microbial fertilizer Azotobacter

1, nitrogen-fixing bacteria is sensitive to soil pH, the optimum pH of 7.4 to 7.6, acidic soil

application of fertilizer nitrogen-fixing bacteria, should be with the application
Lime to increase the efficiency of nitrogen fixation. Too acid, alkali or bactericidal effect of

fertilizer pesticides, are not mixed fertilizer and fertilizer nitrogen-fixing bacteria, in order to

avoid a strong suppression.
2, nitrogen-fixing bacteria to improve soil moisture are higher, when the soil moisture to field water

holding capacity of 25% to 40% only began to grow 60% to 70% of the growth of the best. Therefore,

application of fertilizer nitrogen-fixing bacteria to the attention of soil moisture conditions.
3, nitrogen-fixing bacteria is the temperature, the optimum growth temperature of 25 ~ 30 ℃, 10 ℃ or

higher than 40 ℃, the growth will be inhibited. Therefore, the nitrogen-fixing bacteria of fat stored

in a cool place to be, and to maintain a certain humidity to prevent exposure.
4, nitrogen-fixing bacteria but only in the carbohydrate-rich environment, the lack of nitrogen

compounds, in order to give full play to nitrogen fixation. Soil carbon and nitrogen ratio of less than

40 ~ 70:1, the rapid cessation of nitrogen fixation. Suitable soil carbon and nitrogen into nitrogen-

fixing bacteria than is the dominant species, the most important conditions of fixed nitrogen.

Therefore, the nitrogen-fixing bacteria is best applied in organic-rich soil, or with the application of

organic fertilizer.
5, a large number of soil application of nitrogen, the nitrogen-fixing bacteria to be separated about

10d Zaishi fat, otherwise it will reduce the nitrogen-fixing bacteria in nitrogen fixation. However,

nitrogen-fixing agent with phosphorus, potassium and trace elements with the application of fertilizer,

the nitrogen-fixing bacteria can promote the activity, especially in the barren soil.
6, nitrogen-fixing bacteria fertilizer for various crops, especially for cereal crops and vegetables in

the leafy effect is obvious. Generally used as a seed dressing fertilizer nitrogen-fixing bacteria, with

the mix with the broadcast, then the casing, in order to avoid direct sunlight. Also be dipped in

seedling root or as base fertilizer in the vegetable beds, or mixed with cotton cover types of

fertilizer applied. The roots of crops can also be topdressing, or a combination of irrigation,

topdressing.

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