1. Preparation before broadcast. Apply enough basal fertilizer before planting to build enough pods. Apply about 4,000 kg of organic fertilizer per acre and 5 kg of diammonium phosphate. Planted according to size, large row spacing 0.6-0.8 meters, small row spacing 0.4 meters. Herbicides were sprayed in small rows 3-5 days before sowing and then covered with plastic film to kill weeds and raise the temperature. Select a compact, superior maize variety with a short growing period.
2. Sow. From late February to early March sowing, that is, before and after the convulsions, the earliest to advance to the fifteenth lunar month sowing. In a small row of holes sowing, hole depth 3-5 cm, spacing 18 cm or so, when sowing should pay attention so that the two rows of corn intercalated. The sowing amount is 4-4.5 kg/mu and the earth is covered after sowing. Then cover the shed with a small shed, 30-40 cm high.
3. Field management. To set the seedlings early, set the seedlings at about the 3rd leaf stage. Pay attention to proper ventilation, when the corn is topped to the arch shed, it must be timely broken membrane seedlings, so as not to burn the seedlings. In addition to the critical period of corn growth and development, such as jointing, large bell mouth, pumping male fertilizing water, but also should be flexible management, drought and pour. When watering, appropriate amount of fertilizer can be added with water, preferably 10 kg per mu.
4. Harvest. Corn harvesting can be flexibly controlled. If the market price is high, corn can be harvested when it can be cooked again. If the market price is not high, it can be harvested as normal corn, ie harvested after full maturity. It is determined that if the corn is harvested after ripening, the average yield per mu is about 750 kg. After early spring corn is harvested, it is possible to plant another season of summer corn.
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