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What points should be noted when applying phosphate fertilizer?
What effect does nitrogen fertilizer have on wheat? Please explain that among the elements required for wheat growth and development, nitrogen has the greatest impact on wheat grain quality, and its grain yield and protein content depend to a large extent on the level of nitrogen supplied by the soil. If the supply is very sufficient throughout the entire growth period of wheat, wheat will be both high-yielding and high in protein...
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How should phosphate and potassium fertilizers be applied when growing corn?
How should phosphate and potassium fertilizers be applied when growing corn? Please give guidance. When growing corn, the effect of phosphate and potassium fertilizer application varies greatly depending on the soil's available nutrient content. Increasing phosphate and potassium application helps produce strong seedlings that emerge early, strong plants with large ears, a higher grain-to-leaf ratio, and more grains and greater grain weight; it is an important condition for improving population quality. However, after phosphate and potassium fertilizers are applied, ...
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How to apply calcium magnesium phosphate fertilizer for better results
How to apply calcium magnesium phosphate fertilizer well? Calcium magnesium phosphate fertilizer is a multi-element fertilizer mainly containing phosphorus, along with calcium, magnesium, silicon and other components. Calcium magnesium phosphate fertilizer is insoluble in water, non-toxic, non-corrosive, not easily moisture-absorbing, not easily caking, and is a chemically alkaline fertilizer. It is widely suitable for various crops and phosphorus-deficient acidic soils. Application metho...
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What happens after applying high-concentration phosphate fertilizer?
What happens when high-concentration phosphate fertilizer is applied? Please explain that the main component of ordinary superphosphate is monocalcium phosphate, and the fertilizer contains 14%-18% phosphorus; the secondary component is calcium sulfate, accounting for about 50%. Therefore, applying ordinary superphosphate not only provides crops with phosphorus nutrition, but also allows crops to obtain sulfur nutrition. However, superphosphate...
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How can you tell good phosphate fertilizer from bad? These methods are simple and practical
The following methods for identifying good and poor phosphate fertilizer are introduced: observe the color and form. Phosphate fertilizer should be grayish white and powdery. If the color is white or yellow, it may be because the acid treatment was incomplete and its phosphorus content is low. Smell the odor. Phosphate fertilizer should have a slight sour odor. If it has no such odor, it means that during production...
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Using potassium dihydrogen phosphate for foliar feeding of flowers and green plants: pay attention to 3 points to avoid fertilizer burn
As people's living standards improve, many people keep some flowers and green plants at home, commonly including clivia, jasmine, and the happiness tree, to decorate the home and add a touch of green. And plants need fertilizer for both growth and flowering, while phosphorus...
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What Is Water-Soluble Phosphate Fertilizer? Understanding the Definition and Characteristics in One Article
You often hear that high-end compound fertilizers contain large amounts of water-soluble phosphate fertilizer, but what exactly is water-soluble phosphate fertilizer? Let us introduce ordinary superphosphate and triple superphosphate among water-soluble phosphate fertilizers. Their common characteristic is that the phosphate they contain exists in the form of monocalcium phosphate [Ca(H2PO4)2·H2O], which is readily soluble in water and can...
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What are the precautions for applying diammonium phosphate?
What should be noted when applying diammonium phosphate? Please explain that the following three points should be noted when applying diammonium phosphate: 1. Diammonium phosphate must not be mixed with alkaline fertilizers, otherwise it will cause nitrogen volatilization and also reduce the fertilizer efficiency of phosphorus. 2. For crops that have already been applied with diammonium phosphate, during the middle and late stages of growth, generally only an appropriate amount of nitrogen fertilizer should be supplemented, and no additional phosphorus fertilizer is needed.
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What are the correct ways to use calcium-magnesium phosphate fertilizer?
How do you use calcium-magnesium phosphate fertilizer? Please give an introduction. The main production areas of calcium-magnesium phosphate fertilizer are in China. Because its raw materials are widely available and its production process is simple, it has developed rapidly in recent years in the phosphate mining areas of southern China. The fertilizer appears as a grayish-white, blackish-green or brown glassy fine powder, and its composition is fairly complex, mainly Ca3(PO...
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What are the symptoms of organophosphate pesticide poisoning?
What are the symptoms of organophosphate pesticide poisoning? Please explain. Organophosphorus compounds are a type of insecticide widely used in agriculture and healthcare, and most have varying degrees of toxicity. They can enter the bodies of fur-bearing economic animals through the digestive tract, respiratory tract, skin, and mucous membranes, causing poisoning. Organophosphate pesticides that can cause poisoning include 1605, 1059, trichlorfon, dichlorvos, dimethoate, and more than 10 other types. Feeding grain, wild grass, or vegetables after organophosphate pesticides have been spread on them, or feed contaminated by them; spreading organophosphate pesticides near fur-bearing economic animal farms, with liquid splashing and being inhaled by the animals; using utensils previously used to prepare organophosphate pesticides to mix feed, or drinking water contaminated by them, can all cause organophosphate poisoning in fur-bearing economic animals. In addition, feeding the meat carcasses and by-products of livestock, poultry, and other animals that died from organophosphate pesticide poisoning, or using organophosphate pesticides to treat internal and external parasitic diseases in animals with improper dosage or excessively high concentration, can also cause poisoning. According to the amount of poison, the course of poisoning, and the manifestations, it can be divided into acute poisoning and chronic poisoning. In acute poisoning, the sick animal has difficulty breathing, salivates, foams at the mouth, sheds tears, snorts, and the conjunctiva and oral mucosa become cyanotic: the pupils constrict; diarrhea occurs with thin feces containing blood, with frequent defecation and urination; the skin feels cool; the animal is highly sensitive to external stimuli, in a state of excitement, with hearing loss and inhibited visual responses; the hind limbs are paralyzed, unable to stand, and walking is difficult. Muscle groups throughout the body show spasmodic contractions of varying degrees, skeletal muscles tremble, the whole body becomes weak, and death usually results from paralysis of the respiratory center or heart failure. In chronic poisoning, the sick animal shows reduced eating or even refusal to eat, gradually becomes emaciated, has movement disorders and uncoordinated movements: long-term diarrhea with shed intestinal mucosa or blood in the feces, increased respiratory secretions, leading to difficulty breathing, and finally a drop in body temperature and death. Necropsy shows cyanosis of the visible mucous membranes, a large amount of mucous secretions in the oral cavity, pulmonary congestion and edema, and bronchi filled with foamy mucus. Parenchymal organs are congested and hemorrhagic, meninges are congested, and gastrointestinal mucosa is shed with hemorrhagic spots or hemorrhagic patches. Based on a history of contact with organophosphate pesticides and typical symptoms such as excessive salivation, constricted pupils, muscle tremors, and difficulty breathing, a preliminary diagnosis can be made. It is best to collect pathological materials for toxicological identification to establish a final diagnosis. To prevent this disease, organophosphate pesticides must be properly stored and used. When deworming animals, the dosage and concentration must be correctly mastered, care must be strengthened, and licking or biting each other must be strictly prevented. When using trichlorfon to treat internal parasites in animals, it must never be given together with alkaline drugs. When crops sprayed with organophosphate pesticides are used as feed, they should be thoroughly washed clean and first subjected to a safety test before they can be fed to animals. It is forbidden to feed fur-bearing economic animals with the meat carcasses and by-products of livestock, poultry, and other animals (rabbits, dead foxes, rats, fish, etc.) that died from organophosphate poisoning. For acute poisoning, rescue should be carried out quickly. For poisoning caused by oral ingestion of organophosphate pesticides, immediately use 2-3% sodium bicarbonate solution, 1-2% soda water, or 0.1% potassium permanganate solution (potassium permanganate cannot be used for 1605 poisoning) for repeated gastric lavage to remove unabsorbed poison, but if poisoning is caused by oral trichlorfon, alkaline solution must not be used for gastric lavage; instead, use 1:5000 potassium permanganate solution or physiological saline for gastric lavage. For symptomatic treatment, to relieve spasms, barbiturate can be injected subcutaneously (10% sodium isoamylbarbiturate solution), 10 mg per kg body weight for mink, and 30-50 mg per kg body weight for silver-black foxes. It is best to use it once every few days, for several consecutive times. Pralidoxime at 30 mg per kg body weight, diluted with 5% glucose solution and physiological saline, should be injected slowly intravenously, and acts rapidly. However, it must never be combined with alkaline drugs.
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