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What are the precautions for spraying urea?
What should be noted when spraying urea? Here are the precautions for spraying urea: 1. Do not spray in extremely hot weather or before rain, to avoid burning the seedlings or losing fertilizer nutrients. The best time to spray is in the early morning or afternoon each day, and spray again 7~10 days after the first application. 2. When spraying on cereal crops or crops with smooth leaves...
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What are the precautions for applying urea to farmland?
What should be noted when applying urea to farmland? Please explain: urea is convenient to use and has high fertilizer efficiency, making it a nitrogen fertilizer much loved by farmers. It can be used as a base fertilizer, a topdressing, and also as a foliar topdressing. If applied improperly, it not only wastes fertilizer but can also cause "fertilizer burn" and harm crops. Therefore, when applying urea...
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What issues need attention when urea production surges?
How can urea application improve utilization efficiency? Please guide deep application. Whether urea is used as a base fertilizer or a top dressing, it should be applied deep and covered with soil, with an application depth of 10-12 cm being appropriate. Deep application of urea can significantly improve utilization efficiency. According to experiments, when urea is surface-applied or shallow-applied at 2-3 cm, the utilization rate is only 30%; at an application depth of 5 cm, the utilization rate is 45%...
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What are the methods for identifying the national standard for urea products?
How do you identify the national standard for urea? Please introduce 1 Subject content and scope of application This standard specifies the technical requirements, test methods, inspection rules, and marking, packaging, transport and storage of urea. This standard applies to urea produced by synthesis from ammonia and carbon dioxide. Its main uses are agricultural fertilizer, plas...
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What should be noted when using urea?
How is urea applied? Here is an introduction to the field application methods of urea: it can be used as a base fertilizer and as a top dressing, but is not suitable as a seed fertilizer. When urea is used as a base fertilizer, two points should be noted. First, it should be applied deeply and covered with soil; do not irrigate immediately after application, to prevent the urea from leaching into deeper layers. When urea is used as a base fertilizer on dryland, be sure to apply...
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Can urea be used as a seed fertilizer? You need to master the correct method of use
Can urea be used as a seed fertilizer? Please explain. Production practice shows that urea is not suitable as a seed fertilizer. Urea is an amide-form physiologically neutral fertilizer, containing 46.3% nitrogen, and is the inorganic chemical fertilizer with the highest fluorine content among solid nitrogen fertilizers. Urea is a white or light yellow crystalline substance, granular and easily soluble in water, suitable as a base fertilizer or top dressing, but urea...
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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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What should be noted when applying nitrogen fertilizer?
How should foliar fertilizer be sprayed on wheat? Please provide guidance. After wheat flowers, it enters the key period of yield formation. Spraying foliar fertilizer from flowering to grain filling can effectively improve yield and quality. 1. Spraying method. 1. For spraying multi-dimensional monopotassium phosphate, use 100 grams of 99.5% multi-dimensional monopotassium phosphate per mu, dilute with 30 kg of water and mix evenly...
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What are the effects and benefits of spraying foliar fertilizer on bananas?
How should foliar fertilizer be sprayed on tea plants? Please advise. If famous tea is contaminated, especially export products, its output value and reputation will suffer severe setbacks. To improve tea quality and yield, in addition to measures such as growing green manure in tea gardens, mulching to retain moisture, applying sufficient farmyard manure after each harvest, and improving tea-making techniques, one should also skillfully...
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What to pay attention to when spraying foliar fertilizer on vegetables
What should be paid attention to when spraying foliar fertilizer on vegetables? Please guide. Leafy vegetables such as Chinese cabbage, spinach, shepherd's purse, etc. need more nitrogen, so the fertilizer sprayed should mainly be urea and ammonium sulfate. The spraying concentration should be 1%-2% for urea and 1.5% for ammonium sulfate, sprayed 2-4 times per season, preferably in the early growth stage. Melon and fruit vegetables such as...
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