How to deal with low utilization of chemical fertilizers

During the Spring Festival, when reporters returned home to the Chinese New Year and asked about agricultural production, many farmers reported that at present, more and more chemical fertilizers are being produced, but the output has not seen much growth. To this end, the reporter specifically linked senior agronomist Yu Hongzhang and asked him to support the move.

Yu Hongzhang:

Reasons The low utilization of chemical fertilizers is mainly due to improper fertilization methods.

Measure

According to the output target, do a good job of balanced fertilization. In a certain range of fertilization, the crop yield and the amount of fertilization have a positive relationship. Too much increase in the total amount of fertilization or the number of single fertilization will result in reduced production due to the loss of ecological balance in the nutritional environment. Therefore, it cannot be said that the more the fertilizer is applied, the higher the yield will be. It has been determined that for every 100 kg of rice produced, 1.85 kg of nitrogen, 0.85 kg of phosphorus pentoxide, and 2.1 kg of potassium oxide should be absorbed from the soil. For every 100 kilograms of lint produced, 12.0 kilograms of nitrogen, 4.0 kilograms of phosphorus pentoxide, and 12.0 kilograms of potassium oxide are absorbed. Of course, factors such as climate, soil, and fertility should also be considered when determining the amount of fertilizer to be applied.
Adhere to deep fertilization, so that water to adjust fertilizer. Production should be adhered to deep application of chemical fertilizers so as to cover and protect chemical fertilizers with soil to reduce volatilization and loss. When there is a shortage of lyrical moisture, it is necessary to apply adequate water to adjust the amount of water, so as to adjust fertilizer by water.

Mix organic fertilizers to enhance adsorption capacity. After mixing chemical fertilizers and organic fertilizers, the available nutrients can be adsorbed or combined by organic fertilizers and then released gradually, which not only prolongs the time for fertilizer supply, but also reduces unnecessary consumption of nutrients.

Improve fertilizer preparations and regulate fertilizer supply peaks. One is to make a single type of fertilizer into a broad-spectrum type of compound fertilizer; the other is to make a special-type fertilizer based on the characteristics of crops to be fertilizer; the third is to use modified means to make immediate-release fertilizers into slow-release fertilizers; Fertilizers and bio-organic fertilizers are used as granular fertilizers that complement each other, so that the peaks of fertilizer requirements and the peaks of fertilizer supply can be combined to give full play to fertilizer efficiency.

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