How to correctly go about applying fertilizer when planting corn in large areas of the countryside?

If the soil is relatively fertile, and the soil's basal fertilizer content is more adequate, then you can reduce the application of seed fertilizer, or even no application. On the contrary, if the soil is relatively dry, and the soil's base fertilizer content is low, then you can increase the application of seed fertilizer, and then ammonium bicarbonate, diammonium phosphate, potassium sulfate or potassium chloride content is calculated, in accordance with the top of the dispensing of corn special fertilizer. According to mu Shi deep furrowing and planting corn. This fertilization method, locally known as "a bombardment", that is, a one-time fertilization. Minus any land fertilization method.

Planting on the corn in the unseeded before the corn beds closer to the stubble sprinkled with well-rotted farmyard manure. When the seedlings grow to 3 leaves, sprinkle urea between the two holes of the corn seedlings (corn between the two holes of 20 a 25cm), and then front hoe. Corn growth needs to absorb a variety of mineral nutrients from the soil, of which nitrogen is the most, followed by potassium, phosphorus in the third place. Generally every 100 kilograms of kernels produced need to absorb from the soil 2.5 kilograms of pure nitrogen, phosphorus pentoxide 1.2 kilograms, potassium oxide 2.0 kilograms.

With the soil fast-acting potassium declining year by year, the area of potassium deficiency is expanding, in order to meet the demand for corn growth on potassium, must be comprehensively increased potash fertilizer. High-yield field suitable potash application for about 8 kg per mu, medium-yield field for about 7 kg, when the corn grows to about the same height as a person. To grow ears when it is time to apply urea again. This time the fertilizer is applied because the corn grows taller. You can no longer use a tractor to apply fertilizer. It is usually manually fertilized.

Corn pulling to draw male is the biggest effect of fertilization period, this period is the female spikelet differentiation period, nutritional growth and reproductive growth and progress, is to determine the size of the cob and the number of grains how much the key period, the need for more nutrients and water. In the period of corn growth, the greatest demand for nitrogen fertilizer, phosphate, potash, followed by fertilizer in the corn pulling period, pregnant ears, flowering period, fertilizer should be selected in the rain or watering before fertilizer, fertilizer to urea fertilizer-based.