1, nitrogen (n): Pepper continuously absorbs nitrogen fertilizer from early growth stage to harvest stage, and its yield is directly related to nitrogen fertilizer absorption. The spicy taste of pepper is related to the amount of nitrogen fertilizer, and more application will reduce the spicy taste. For dried pepper, the amount of nitrogen fertilizer should be properly controlled and the proportion of phosphorus and potassium fertilizer should be increased. Too much nitrogen fertilizer is used, the nutritional growth is too vigorous, and the fruit can't get the supply of calcium in time, so navel rot occurs. It is especially necessary to control nitrogen fertilizer at the initial flowering stage, otherwise the plants will grow white and the reproductive growth (flowering and fruiting) will be delayed.

2. Phosphorus (P2O5): With the continuous growth of plants, more and more phosphorus is absorbed. However, the variation range of adsorption capacity is very narrow, and the total adsorption capacity is about 1/5 of nitrogen. Insufficient phosphorus will cause falling buds and flowers. Phosphorus is an important factor in flower bud development.

3. Potassium (K2O): The absorption of potassium in the early growth stage of pepper is small, and it increases after picking the fruit. If the soil potassium is insufficient in the fruiting period, the leaves will be deficient in potassium, defoliation will occur, the fruit setting rate will be low, and the yield will not be high.

4. Calcium (CaO): The absorption of calcium is lower than that of tomatoes. If it is insufficient, it will induce navel rot of the fruit. Calcium deficiency is indispensable for the whole growth period.

5. Magnesium (Mg): Magnesium was absorbed less in the early stage of planting, but increased in the harvest period. At this time, if magnesium is insufficient, the veins between leaves will yellow into magnesium deficiency, which will affect the growth and fruit of plants.

6. Boron (B): When the pepper is short of boron, the leaves turn yellow, the heart leaves grow slowly, the xylem of the root turns black and rotten, the root system grows poorly, the flowering period is delayed, and the flowers are not full, which affects the yield. It is very important to use fertilizer correctly no matter what period of pepper is. It is very important to apply fertilizer scientifically. When to apply fertilizer and what kind of fertilizer you like, especially during reproductive growth and vegetative growth, you should not apply fertilizer indiscriminately to avoid unnecessary trouble.