These fat methods are quite unreliable! Please sit in the right place.
Output Time:
2018-03-05
These fat methods are quite unreliable! Please sit in the right place.
[Agronet agriculture experts from China Agricultural Network face-to-face] They all said that the crop depends on fat. But did you know that fertilizers cannot be used indiscriminately? Today I will give you a list of unreliable methods of using fertilizers.
Pomotri:
First, acid fertilizers should not be mixed with alkaline fertilizers. Ammonium carbonate, ammonium sulfate, ammonium nitrate and ammonium phosphate cannot be mixed with alkaline fertilizers such as plant ash, lime and potassium fertilizers, which can lead to a neutralization reaction, resulting in nitrogen loss and reduced fertilizer efficiency.
Secondly, chlorine-containing chemical fertilizers should not be used on salted alkaline lands and in oil. Chlorine crops include tobacco, beets, potatoes, tea trees, peaches, grapes, citrus fruits, sugar cane, watermelons, and so forth.
Third, nitrogen fertilizers should not be applied shallowly or before watering. After applying nitrogen fertilizers to the soil, as a rule, they are converted into ammonium nitrogen, which evaporates easily with water loss or photothermic action and loses the effect of fertilizer.
Fourth, ammonium carbonate and urea cannot be mixed. The amide nitrogen in urea cannot be absorbed by the cultures. It can only be used by cultures after being converted into ammonium nitrogen by the action of adenase in the soil. The acceleration of nitrogen evaporation loss in urea cannot be mixed and applied. Ammonium carbonate should not be mixed with bacterial fertilizers, because the former will release a certain concentration of ammonia, which will be toxic to the active bacteria of the latter and will cause bacterial fertilizers to lose the effect of fertilizer.
Fifth, nitrogen fertilizers should not be applied to legumes. The roots of legumes have nitrogen-fixing rhizobia. Excessive application of nitrogen fertilizers will not only lead to waste, but also lead to the fact that the crop will become greedy until late ripening and affect the yield.
6. Phosphate fertilizers should not be used in dispersed form. Phosphorus elements in phosphorus fertilizers are easily absorbed and fixed by the soil, and the fertilizer effect is lost. Phosphorus fertilizers and fertilizers must be mixed and composted for some time and then applied to ditches or pits near the crop root system.
7. High phosphorus fertilizer should not be used in vegetables. The needs of vegetables for phosphorus are relatively small.
Eighth, potash fertilizers should not be used in the later stages of crop growth. When symptoms of potassium deficiency appear, crop growth is near the late stage, and during this time feeding will not have much effect, so potash fertilizers should be applied before the seedling stage or used as the main fertilizer.
Nine, rare earth fertilizers should not be applied directly to the soil. The amount of rare earth fertilizer is small, and the correct method of use is to mix rare earth fertilizer or spray leaves.
X. It is not recommended to apply fertilizers regardless of the varieties of crops and the period of growth. Different crops and crops of different growth periods have different demands for varieties and quantities of fertilizer, and fertilizing regardless of crops and periods would be counterproductive.
11. Avoid prolonged use of ammonium sulfate. Ammonium sulfate is a physiologically acidic fertilizer. With prolonged use in the same soil, it will increase its acidity and destroy the structure of the agglomerate. In alkaline soil, ammonium sulfate ammonium ions are absorbed and acid root ions remain in the soil and react with calcium. The soil is compacted.
Twelve, non-rotten farm fertilizer and pie fertilizer should not be used directly. Uncooked farm fertilizer and pie fertilizer contain a variety of eggs and microbes, and produce large amounts of carbon dioxide and heat. Direct use will contaminate the soil, speed up the evaporation of soil water, burn the root system of crops and affect seed germination. The correct method of use is to completely fold and decompose the fertilizer on the farm and use it after high-temperature disinfection or treatment.