Using climatic factors to improve fertilizer utilization

The layout of crops in the field is generally arranged according to the climate change laws over the years. Only in this way can we better enhance the adaptability of crops to the climate and enhance the factors of high yield and stable production. However, the same crops are grown by different farmers in different regions, and the yields are often very different. In addition to the selection of improved varieties and enhanced management of crops, high yields of crops must be based on scientific fertilization techniques, and the efficiency of fertilization is closely related to the rational use of climate resources. Use good temperature to significantly improve fertility

Crops rely on roots to absorb nutrients and water. Mastering the appropriate temperature to apply fertilizer can greatly improve fertility. For example, ammonium bicarbonate in nitrogen fertilizer is shallowly applied at high temperature, which is very volatile and wasteful. Only deep application can adjust the ground temperature and improve fertilizer efficiency. The optimum temperature for different crops is different. For example, the optimum water temperature for rice is 30°C~32°C, the optimum temperature for cotton and corn is 25°C~30°C, the tobacco is 22°C, and the barley is 18°C. . Therefore, in the hot season, more decomposed organic fertilizer should be applied, and appropriate amount of fertilizer should be applied. However, it is necessary to prevent the peak of vegetative growth of the crop from meeting the peak of fertilizer release, and avoid causing premature aging in the early stage. In the low temperature season, semi-humic organic fertilizer and high-concentration clear water manure can be applied on the wintering crops to provide heat during the decomposition process and increase the ground temperature. Secondly, the appropriate amount of phosphorus and potassium fertilizer can be added to enhance the cold resistance of the wintering crops. Ability; three can apply some quick-acting fertilizer to the weaker crops, and supplement nutrients faster.

Use light intensity to enhance photosynthetic efficiency

The total annual radiation of different ecological regions is different, generally 90~160 kcal, and more than 190 kcal. Agricultural production is to use the light intensity, increase the leaf area coefficient of crops, improve the photosynthetic efficiency, and better absorb and produce nutrients. Therefore, it is necessary to apply more nitrogen fertilizer in places with good light conditions to promote vegetative growth and reproductive growth of crops. Where the lighting conditions are poor, it is necessary to apply less nitrogen fertilizer to prevent crops from being late and ripe; when the light is too strong, emphasize Deep application of fertilizer to prevent the fertilizer from being photolyzed and volatilized; in the case of strong light, more phosphorus and potassium fertilizer should be applied to improve water use efficiency; as the leaf area coefficient is enlarged, the root spray fertilizer should be appropriately increased, but it should be in the morning or afternoon. Spraying after 4 o'clock, the leaf surface pores are open, which can improve the absorption capacity of the fertilizer. Cherish the water source, adjust the fertilizer, adjust the temperature and regulate the gas

Water can regulate the state of water, fertilizer, temperature and gas in the soil. It not only affects the development of crop roots, but also affects the absorption, transformation, expansion and loss of nutrients by roots. Scientific use of water resources can play water. Adjust fertilizer, adjust temperature with water, regulate water with water, and promote water with water. Due to different rainfall and water source conditions, in fertilization technology, it is necessary to pay attention to the excessive application of nitrogen fertilizer during the rainy season to prevent crop madness, fertilizer loss and pollution of water sources. Second, it is necessary to pay attention to the operation method, when the soil moisture content is high, Heavy fertilizer application, that is, the fertilizer concentration is higher, but the dosage should be less, and it must be kept at a certain distance from the crop. When the weather is dry, it is necessary to re-apply light fertilizer, or to reduce the amount of water, increase the number of watering, adhere to wet management, and maintain sensation, in order to use live fertilizer.

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Roxadustat Intermediate

Roxadustat Intermediate

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