What are the skills of urea application?

When applying urea in dry land, whether as a base fertilizer or as a top dressing, pay attention to deep application of cover soil so that the fertilizer is placed in a moist soil layer in order to facilitate the conversion of urea and to prevent the volatilization of ammonia after conversion; if soil moisture is insufficient after fertilization, Water can be appropriate, avoid flooding irrigation. The irrigated land should be applied before irrigation, and it is better to deepen it. Generally, do not rush to water after applying. It needs to be irrigated every 3 to 5 days.

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Citric acid is a weak organic acid found in citrus fruits. It is a natural preservative and is also used to add an acidic (sour) taste to foods and soft drinks. In biochemistry, it is important as an intermediate in the citric acid cycle and therefore occurs in the metabolism of almost all living things. It also serves as an environmentally benign cleaning agent and acts as an antioxidant. Citric acid exists in a variety of fruits and vegetables, but it is most concentrated in lemons and limes, where it can comprise as much as 8 percent of the dry weight of the fruit.

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