1, according to local conditions for high sulfur soil, it is not appropriate to apply biological fertilizer, because sulfur can kill biological bacteria. For the paddy field, it is generally not necessary to apply it, and the effect of the spray method is more obvious.
2, the optimum temperature for the application of bacterial fertilizer due to temperature is 25 ° C ~ 37 ° C, below 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, it should also be known that the optimum moisture content of nitrogen-fixing bacteria is 60% to 70%.
3, due to mixing should not be mixed with fungicides, insecticides, herbicides and sulfur-containing fertilizers (such as potassium sulfate, etc.) and straw ash, because these drugs, fertilizers are very easy to 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 prevent mixing with unfertilized farmyard manure.
4, due to the quantity system for the field of fertilizer application for many years, the application of biological fertilizer can not reduce the application of chemical fertilizers and organic fertilizers, because the crops have a dependence on fertilizers, the use of biological fertilizers instead of nitrogen fertilizer can not be adapted at once, so The substitution amount should be 30%, 40% and 60% in the first, second and third years respectively.
5. The bio-fertilizer is not a quick-acting fertilizer because of the time. It is best applied in the nutrient critical period of the crop and 7-10 days before the nutrient absorption period.
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