The essential nutrients for plant growth include carbon, hydrogen, oxygen, nitrogen, phosphorus, sulfur, potassium, magnesium, calcium, iron, manganese, zinc, copper, boron, molybdenum, chlorine, and nickel. In addition, some plants also have Silicon, sodium and cobalt are required and are called beneficial elements. The 17 essential nutrients for plant growth cannot grow normally in the absence of any one of them. According to the ratio of different crops, supplying essential nutrients is a necessary condition for the robust growth of crops. Any partial waste will cause crops to grow. Malnutrition may lead to reduced production, decreased quality, or vulnerability to pests and diseases, or poor natural stress resistance. High-yield crops need to be grown on limited cropland to produce more food. Most high-yield crops require larger amounts of fertilizer than common varieties, and the required nutrients move backwards. The one-time base application must be able to meet the nutrients needed in the later stages of crop growth. It is advisable to apply them. Compound fertilizers containing a certain amount of slow-release nitrogen; high-yield crops are easy to fall down, require thick stalks, and have a certain plant morphology. The erected leaves increase the light intensity and ventilation performance, and it is better to apply a sufficient amount of active silicon and calcium. Compound fertilizers to enhance stem blade strength; high-yield crops require enhanced photosynthesis, while the reasonable combination of nitrogen, magnesium, and iron nutrients can increase chlorophyll content; therefore, high-yield crops require not only nitrogen, phosphorus, and potassium, but also nutrient The demand is more comprehensive. Fertilizer is the "grain" of food. Generally speaking, the "grain" that China's fertilizer industry provides for crops is a high-density compound (mixed) fertilizer with "fine powder" and "fine grain." People have long realized that eating white flour and polished rice for a long time is not good for health. The same is true for crops. If too much nitrogen is applied, the leaves become weak, and the lawn is poor in resistance to treading. The leaves with fleshy hypertrophy are most popular among pests; in the metabolism of plants, the phenol compounds related to disease resistance are reduced, and the lignin content is low. For example, under low nitrogen, the lignin content is 1100 micrograms per 100 grams of dried rice, and 500 micrograms in the case of high nitrogen. If nitrogen is excess, the activity of key enzymes in phenol metabolism is also reduced, so that the disease resistance is low. If there is a lack of calcium in the growth area behind the root canopy of the underground part of the plant, the roots will become “loopholes,†causing the virus to invade the roots. The Japanese literature reported that over-nitrogenized onions are not resistant to storage and perishable; Rice rice fever (blight) is associated with low levels of silicon and lignin caused by excessive nitrogen application; nitrogen-producing rice tends to produce white-backed fly Alas, because this kind of insect prefers to eat the new leaf of rice with high soluble nitrogen; pumpkins with many nitrogen, sulfur deficiency, and potassium deficiency are vulnerable to the melon pests. The over application of phosphate fertilizer can make the onion suffer from dry rot easily. The use of calcium can reduce the ulcer disease, bacterial wilt, and wilt disease of tomatoes; black mold of onions; gray mold of lettuce; root rot of Chinese cabbage and cowpea; and yellow rot of apples. The ridge phosphate fertilizer and phosphatic potassium nitrate fertilizer contain a certain amount of water-soluble calcium. If the ingredients are properly regulated, it can become a disease-resistant fertilizer for vegetables and fruit trees. Application of silicon can inhibit rice leaf blight, rice blast, sheath blight, leaf blight, sclerotium nucleus disease; barley, wheat powdery mildew; cucumber powdery mildew, blight, brown spot; melon, melon, The powdery mildew of strawberry, rose, and grape; and can impede the invasion of rice and wheat by the larvae of Chenopodiaceae, brown planthoppers, and aphids, and reduce pests. Calcium magnesium phosphate fertilizer contains a large amount of active silicon that can be absorbed by crops and has a silicic acid chain of less than 1 nanometer. It is the basic raw material for disease-resistant fertilizers. Manganese can reduce wheat blight, barley nematode disease, cucumber powdery mildew, potato achene disease. Application of copper can reduce wheat blight, powdery mildew, stem darkening; cucumber powdery mildew. Zinc can reduce the diseases caused by filamentous fungi in wheat root rot, lettuce, and cress. Application of boron can reduce powdery mildew in wheat and cucumber and root rot of Chinese cabbage. In China, the former Soil and Fertilizer Institute of the Chinese Academy of Agricultural Sciences carried out research on regulating crop nutrition and enhancing crop disease resistance, and achieved good results in guiding practice. Researchers at Zhengzhou University are based on the deficiency of many trace elements in many crops. This is one of the main reasons for the decline of crop resistance and the initiation of diseases and insect pests. It is believed that balancing the supply of different nutrients in crops can help the plant to "prevent fitness and prevent disease. Fertilizer formula can make crops grow healthily and play a role instead of pesticides, thus reducing the application of chemical pesticides.Zhengzhou University Lexi applied phosphorus compound fertilizer technology research and promotion center, Beijing Haiyifei technology company and Guizhou Fuquan phosphate fertilizer factory jointly carried out “Study on adjusting soil quality, reducing disease, and promoting the healthy growth of crops†series of studies using low-grade phosphate rock and insoluble potassium ore, low-grade potassium-containing associated minerals, etc., respectively, to produce three types of molten phosphorus and potassium fertilizers can be absorbed by crops The use of SiO220% ~ 35%, CaO20% ~ 30%, MgO8% ~ 10%, FeO0.5% ~ 2%, product name "6818." In the fertilization design, according to the appropriate crop soil in the base saturation ratio For CaO5/8, MgO2/8, and K2O1/8, the amount of CaO, MgO, and K2O necessary for the soil is calculated. With this optimum ratio of the base, the quality of the crop is good. In addition, a number of members of the research group of the “Study of Highly Optimized Compound Fertilizer Nutrients (Hybrid Fertilizer) Technologies†in the “Eleventh Five-Year Plan†National Science and Technology Support Program conducted field experiments on the “6818†product. The agrochemical tests carried out by the High-strength Task Force of the Jilin Agricultural University's Jihuan College and the Li Liping Group of Zhengzhou University in Jiangsu, Heilongjiang, Jilin, Henan, and Shandong respectively showed that the "6818" formula fertilizer has obvious resistance to lodging on high-yielding rice. ; "6818" in the soluble P2O5, soluble K2O and diammonium phosphate, potassium chloride in the water-soluble P2O5, K2O equivalent; "6818" vegetable fertilizer greenhouse cucumber, zucchini root rot, cervical spine rot, The incidence of downy mildew is low, and the rate of malformed fruit is low. 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High-yield crops require slow-release fertilizers containing trace elements
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