Good scientific fertilization under hot and dry weather

As the saying goes: "There is no income in the water, but more income is less." This shows the importance of water and fertilizer to the crop. Temperature, on the other hand, is an extremely important condition that affects the effect of fertilizer application. On the one hand, it can affect the conversion of fertilizers in soil and the accumulation of effective nutrients; on the other hand, it also affects the growth status of crops and the respiration of roots, and thus affects The speed with which crops absorb, transport, and use nutrients. Therefore, it is recommended that farmers use scientific fertilization in order to improve fertilizer efficiency in hot and dry weather.

1. Apply phosphate fertilizer. Phosphate fertilizers can be used more efficiently at higher temperatures and can increase the availability of water in the soil. Adequate phosphorus can increase nitrogen utilization and play a role in phosphorus nitrogen. Reduce the amount of nitrogen fertilizers, especially ammonium carbonate, which is easily decomposed by heat, because heat-decomposable ammonium bicarbonate and high-concentration nitrogen fertilizers can easily cause crops to sprout.

2. Reduce the amount of fertilizer. In high temperature and dry season, under the irradiation of strong light, the temperature of bare ground can reach 50°C, the evaporation is intense, and the concentration of surface water solution increases sharply. At this time, if the same amount of fertilizer is applied under normal weather, the crop yield can not be maintained or not. Increase production, and may cut production. For example, when rainfall is moderate, maize yields 12 kg of pure nitrogen per acre, which may yield high yields. If the same amount of fertiliser is applied at high temperatures and drought, it will face the risk of reduced production.

3. The best fertilization in the evening. Fertilization in the morning, although the operator feels more comfortable, but with the rise of the sun, the temperature rises sharply, the water is quickly evaporated, the crop absorption time is short, the fertilizer utilization rate is low; noon fertilization, due to high temperature, is not conducive to fertilizer Absorption and personnel operations; late evening fertilization, both suitable for personnel operation, but also make up for the shortcomings of short crop absorption time, because the night is a process of lowering temperature, evaporation of surface water is weakened, water retention time is long, it is the best fertilization time.

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