In the winter season, fertilizers are applied to greenhouse vegetables. If the amount is too large, the soil will be hardened, the roots and roots of the vegetables will be rotted, and the plants will be wilted. In order to change the above-mentioned undesirable phenomena, we must improve the soil and apply the fertilizer. Bacterial fertilizer is a non-environmental pollution-free new-type composite biological fertilizer, which is a kind of biological nitrogen-fixing bacteria collected from the natural world. It has been scientifically formulated and combined to improve the comprehensive status of the soil. The principle of applying bacterial fertilizers to winter greenhouse vegetables is described as follows: Angiography Kit,angiography system,angiography machine,angiography surgical grown Anesthesia Medical Co., Ltd. , https://www.jssinoanesthesia.com
First, according to the actual situation in the field
For high-sulfur soils and paddy fields, it is not appropriate to apply biological bacterial fertilizers because sulfur can kill biological bacteria. Generally, no fertilizer is used for paddy fields, and spraying methods can be used. The effect is more obvious.
Second, according to the temperature and humidity conditions
The best temperature for applying the bacterial fertilizer is 25°C-37°C, lower than 5°C and higher than 45°C, and the application effect is poor. It is not appropriate to apply the plots under high temperature, low temperature and drought conditions. At the same time, we should also know that the suitable soil moisture of nitrogen-fixing bacteria is about 60%.
Third, do not mix with other pesticides
Be careful not to mix with fungicides, insecticides, herbicides, and sulfur-containing fertilizers, such as potassium sulfate, because these drugs and fertilizers can easily kill bacteria. In the application, if the application of bacterial fertilizer is in contradiction with pest control and weed control, the fertilizer may be applied first. After 48 hours, the herbicide will be used for weeding. If you are seed dressing, do not use seeds that have been mixed with fungicide. At the same time, it should be prevented from mixing with untransformed farmyard fertilizers, because the farmyard manure will ferment in the process of maturity, which will directly kill the bacteria.
IV. Fertilizer dosage should not be too large when mixed with chemical fertilizers
High-concentration chemical substances are toxic to the microorganisms in the fungicide, and it is particularly important that they cannot be mixed with alkaline fertilizers such as ammonium bicarbonate and physiological alkaline fertilizers such as sodium nitrate.
Fifth, do not immediately replace all other fertilizers
For fields that use chemical fertilizers for many years, chemical fertilizers and organic fertilizers cannot be greatly reduced after the application of biological fertilizers. Because crops have a dependence on chemical fertilizers, replacing nitrogen fertilizers with biological bacterial fertilizers cannot be applied at one go. Therefore, the amount of substitution should be Replacing 30%, 40% and 60% in the first, second and third year respectively.
Sixth, early application
Biofertilizer is not a fast-acting fertilizer, so it is best to apply it 7-10 days before the critical period of nutrition of vegetables and a large number of absorption periods.
Seven, different types of fungus should not be mixed
At present, there are many kinds of bacterial fertilizers on the market, and the active bacteria contained in them are different. It is not very clear whether they have mutual inhibitory effects. If they inhibit each other, they will reduce the fertilizer efficiency.