What are the precautions for crop fertilization？
Now crop fertilization has become an indispensable part of planting crops, but can you really fertilize it? Take a quick look at what we should pay attention to when fertilizing.
1. Fertilizers with high phosphorus content should not be used for vegetables.
2. Potassium fertilizer should not be used in the later stage of crop growth.
3. Rare earth fertilizers should not be applied directly to the soil.
4. It is not advisable to apply fertilizer indiscriminately regardless of crop variety and growth period.
5. Unfermented farm manure and cake fertilizer should not be used directly. Farm manure and cake manure should be piled and rotted first, and then used after being treated with high temperature or chemicals.
6. Chlorine-containing chemical fertilizers should not be used on saline-alkali land and chlorine-free crops. Chlorine avoiding crops include tobacco, fruits, beets, potatoes, watermelons, etc.
7. Nitrogen fertilizers should not be applied shallowly or before watering. Nitrogen fertilizers are generally converted into ammonium nitrogen after being applied to the soil, and are easily volatile with the loss of water or the effect of light and heat, and the fertilizer effect is lost.
8. Ammonium nitrogen fertilizer should not be mixed with alkaline fertilizers such as grass ash.
9. Nitrogen fertilizer should not be applied to leguminous crops. There are nitrogen-fixing rhizobia in the roots of legume crops. Excessive application of nitrogen fertilizers will not only cause waste, but will also make the crops greedy and late ripening, affecting the yield.
10. Phosphate fertilizer should not be dispersed. Phosphorus elements in phosphate fertilizer are easily absorbed and fixed by the soil, and lose the fertilizer effect. The phosphate fertilizer and accumulated fertilizer should be mixed and piled for a period of time, and then applied in trenches or holes near the root of the crop.