Nitrogen: It is an important component of protein, nucleic acid, chlorophyll, plant enzyme vitamins, and alkaloids. Promote the division and growth of cells, making the crop leaf area large and dark green. In the absence of nitrogen, the growth is slow, the plants are short, the leaves are thin, and yellow; the grasses are characterized by fewer sins, short spikelets, and the grains are not full, and the dicots are characterized by fewer branches and are prone to premature aging. Excessive nitrogen will make the cell wall thin and hypertrophy, soft and juicy, easy to be attacked by diseases and insects, and lose resistance to bad weather, leading to prolonged growth period and late maturity; for some roots and tubers, only leaves are grown, which is not easy to bear fruit.
Phosphorus: promotes root development and new organ formation, which is conducive to the accumulation of dry matter in crops, grains are full, roots and tubers have high starch content, melons, fruits, vegetables, and sugar are increased, and oil crop yield and oil yield are improved; Make crops have drought and cold resistance properties. Phosphorus deficiency: slow growth, poor root development, leaf color purplish red, dark green and dark upper leaves, few tillers, late tillers, delayed development, appearance of small ears, few grains, saplings, corn baldness, rape depodization, cotton drop Falling buds, less peaches, late vomiting. Excessive phosphorus: The crop has a strong absorption effect, consumes a lot of powdered sugar and energy, increases ineffective tillers, more scabs, dark green leaves, thick and dense leaves, short internodes, short plants, and hindered growth. The yield is reduced due to early maturity; the vegetable fiber content is high, and the tobacco is poor in combustibility; it can cause the lack of zinc, iron, magnesium and other elements, which aggravates the adverse effects on crops.
Potassium: Promote photosynthesis, the photosynthetic rate of the appropriate amount of potassium is more than 2 times that of the low amount of potassium. Promote the utilization of nitrogen by plants, and increase the nitrogen-fixing ability of rhizobia by 2-3 times. It has a good effect on grain number and grain weight. Enhance plant resistance such as drought, low temperature, salt content, pest damage, lodging, etc. It can reduce rice flax leaf spot, rice blast, red blight, corn stalk rot, cotton red leaf stalk blight, tobacco mosaic disease and other damages. Potassium deficiency: The edges of the leaves are scorched, the leaves are curled, brown-yellow spots, or necrotic.
Calcium: forms cell walls, promotes cell division, promotes root development, enhances the absorption capacity of plants, and can eliminate certain ion poisoning effects. Calcium deficiency: young leaves curl, sticky and empty, root tip cells rot and die.
Magnesium: It is a component of leaf green, an activator of many enzymes, and can promote the conversion and absorption of phosphorus. Synthetic vitamins A, C and calcium, potassium, ammonium, and hydrogen have an antagonistic effect.
Sulfur: It can promote the absorption of nitrogen and plays an important role in absorption. Sulfur is also a component of certain vegetable oils. When sulfur is deficient, the content of chlorophyll is reduced and nodules are formed.
Iron: It is the green component of leaves, which plays an important role in absorption and metabolism. When iron is deficient, the upper leaves appear chlorosis.
Boron: can promote the normal operation of nitrogen water compounds and auxin. Promote the normal development of reproductive organs. It can also adjust the moisture absorption and nitrogen reduction process. Boron deficiency: damage to growth sites and vascular bundles. Boron: The leaf shape is wrinkled, and the leaf color is whitish.
Manganese: It is a variety of enzymes and components and activators. Participate in respiration, photosynthesis, and nitric acid reduction. It can increase the sugar content and root tuber yield.
Copper: Participates in respiration and improves the stability of chlorophyll. Copper deficiency: the development of reproductive organs is blocked.
Zinc: It plays an important role in the hydrolysis, redox and protein synthesis of plant substances. It can increase grain weight and change the ratio of seed to stem. Rice seedling shrinkage and corn white leaf disease are caused by zinc deficiency.
Molybdenum: promotes nitrogen fixation in legume crops, promotes the intensity of photosynthesis, and eliminates the harmful effects of active aluminum in acidic soils. Molybdenum deficiency: plants are short, growth is hindered, leaves become chlorosis, wither and cause necrosis.
Chlorine: Participates in photosynthesis and has the opposite effect on many plants.
The role of various nutrients is equally important and irreplaceable, and none of them are indispensable, otherwise the entire life cycle cannot be completed. People emphasize the use of ammonia, phosphorus, and potassium. This is only due to the inconsistency of supply and demand between plants and soil and needs to be adjusted by fertilization measures. Those elements that have not been emphasized are not unimportant and do not need to be applied. Now it has been reached that fertilization must be used to adjust. Those elements that have not been emphasized are not unimportant. They don’t need to be applied. They have reached the point where they must be adjusted by fertilization. “Jiajiale” just meets the needs of crops for middle and trace elements and makes the soil reach the best supply level. It is also a special fertilizer used by many hemp growers to add micronutrient elements to hemp. Basically, all the fertilizers we use are made of compounds of these elements. By remembering the functions of these elements clearly, you can choose the most suitable fertilizer for your plant at the lowest price. Of course, many readers are too lazy to read, hope I can recommend some specific fertilizer brands and products, it does not matter, I will recommend some specific products in the next chapter.