Summer fruit tree fertilization attention å•¥

Editor's note: Temperature is an extremely important condition affecting the effect of fertilizer. It affects the conversion of fertilizer in soil and the accumulation of effective nutrients on the one hand. It affects the growth of crops and root respiration on the other hand, thus affecting the absorption, transportation and utilization of nutrients by crops. The speed. In summer, the climate is hot and dry, how to improve fertilizer efficiency and reduce fertilizer damage is the focus of fertilization work in this period. This version of the manuscript is for the summer fertilization methods and precautions, in order to provide reference and help for farmers.

Fertilization varieties: multiple application of phosphorus fertilizer and less nitrogen fertilizer

On the one hand, phosphate fertilizer can be used more effectively at higher temperatures, resulting in good fertilizer efficiency; on the other hand, it can improve the utilization of water in the soil and relieve drought and promote each other. In addition, sufficient phosphate fertilizer can increase the utilization of nitrogen and play a role in phosphorus and nitrogen. Reduce the application rate of nitrogen fertilizer, especially carbon ammonia which is easily decomposed by heat, because carbon ammonia and high concentration of nitrogen fertilizer which are easily decomposed by heat are easy to cause crop burning.

Fertilization amount: can not be the same as normal weather fertilization

In the hot and dry season, the soil moisture evaporates strongly, and the concentration of the surface water solution increases sharply. If the same amount of fertilizer is applied under normal weather, the crop yield will not be maintained or increased, and it is likely to reduce production. For example, when the precipitation is moderate, the application of 12 kg of pure nitrogen per mu may result in high yield, and if the same amount of fertilizer is applied at high temperature and drought, the risk of production is reduced.

Fertilization time: best morning and afternoon discomfort

Fertilization in the morning, although the staff feels more comfortable, but as the sun rises, the temperature rises sharply, the water is quickly evaporated, the crop absorption time is short, the fertilizer utilization rate is low; at noon fertilization, due to high temperature, is not conducive to fertilizer Absorption and personnel operation; fertilization in the evening is suitable for personnel operation and can make up for the shortcomings of short absorption time of the crop (because the night is a process of temperature reduction, surface water evaporation is weak, and moisture retention time is long), which is the best fertilization time.

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