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Adapt to local conditions. For soils with high sulfur content and rust fields, it is not advisable to apply biological fertilizers because sulfur can kill biological bacteria. For paddy paddy fields, it is generally not necessary to apply, and the effect of spraying is more obvious.
Due to the temperature. The optimum temperature for applying the bacterial fertilizer is 25-37 ° C, lower than 5 ° C, higher than 45 ° C, the application effect is poor. It is not suitable for the application of crop fields under high temperature, low temperature and drought conditions. At the same time, the optimum moisture content of the nitrogen-fixing bacteria should be 60%-70%.
Due to mixing. It should be noted that the bacterial fertilizer should not be mixed with fungicides, insecticides, herbicides and sulfur-containing fertilizers (such as potassium sulfate) and straw ash, because these drugs and fertilizers can easily kill the bacteria. Or first apply the fertilizer, after 48 hours, then fight the herbicide. If seed dressing, avoid mixing with seeds that have been mixed with fungicide. It should also be prevented from being mixed with unfertilized farmyard manure.
It is suitable for quantity. For the fields where fertilizer has been applied for many years, the application of biological fertilizers can not reduce the application of chemical fertilizers and organic fertilizers in large quantities. Because crops are dependent on chemical fertilizers, replacing nitrogen fertilizers with biological fertilizers cannot be adapted at once. Therefore, the amount of substitution should be done. By the first, second, and third years, 30%, 40%, and 60%, respectively, phosphorus and potassium fertilizers can only make up and cannot be reduced.
It is suitable for the time. The biological bacterial fertilizer is not a quick-acting fertilizer, and it is applied best in the nutrient critical period of the crop and 7-10 days before the nutrient mass absorption period. 
"Bacterial fertilizer" is a non-polluting new compound biological fertilizer developed from the natural nitrogen-fixing bacteria species, which has been scientifically formulated and combined. The following five measures should be taken during the application process:
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