Water and fertilizer management for high-tech corn planting

(1) Basal fertilizer. When preparing the ground before planting, apply 1000 kg of high-quality organic fertilizer (such as pig manure) per mu, and 80 kg of compound fertilizer with an effective content of 25% plus ZnSO4 (ie zinc sulfate) and MnSO4 (ie manganese sulfate). 1 kg with borax (sterilizable) 2 taels (strip application is better: open a ditch between the crop rows near the root of the crop, and apply fertilizer into the ditch); now there is special fertilizer for corn.

(2) Apply seedling fertilizer at the 3-leaf and one-heart stage, and irrigate the roots with 10 kg of water with 1 and a half to 2 urea. (Note: Do not pour on the leaves, otherwise it will cause burning of seedlings) Combined with spraying photosynthetic nutrient film fertilizer (light fertilizer) can increase the photosynthesis capacity of nutrients and chlorophyll, high-grade environmentally friendly plants increase fertilizer, increase production, color, and leaf thick The stem is strong.

(3) Topdressing at 6 leaves, using the hole method (ie: use a thick wooden stick to pestle a hole 8-10 cm from the root of each corn plant, and place a hole with a common mineral water bottle and a tip cap with urea. Just cover the hole.) Pay attention to keep the soil moist at this time. If the soil is dry, you can pour a small cup of water after fertilization. Do not pour too much. The soil should be moist. Spraying plant electronic fertilizers can achieve supernormal fertilizer efficiency.

(4) Topdressing again at 12 leaves, apply 2~3 caps of mineral water bottle to each plant, sprinkle it directly on the roots, and then cultivate soil (soil cultivation: cultivate the soil between rows or furrows on the plant base and ridge surface to form soil Management measures for ridges or high borders. Soil cultivation can increase the thickness of the fertile soil layer for root activities, which is not only beneficial to drought and moisture preservation, but also convenient for drainage and waterlogging. It can also promote secondary roots on plants buried in the soil and create a way for the growth of adventitious roots. A good rooting environment is beneficial to prevent lodging and reduce the damage of weeds) after the soil is cultivated, it is irrigated once.

(5) Water permeable once when the corn is tasseling or spinning. At other times, if the leaves are not rolled at noon, do not water, because corn is a drought-resistant plant, too much watering is not good.

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