First, the choice of plastic film Winter corn is generally used in the thickness of 0.007 ~ 0.008 mm super film or 0.005 mm ultrafine film is appropriate, mu with ultra-micro film 2.5 to 3.0 kg, 0.007 ~ 0.008 mm super plastic film 5 kg. Second, the fine soil preparation site selection of flat terrain, deep soil, soil and vegetable and loose, easy irrigation, fertility conditions are good, potential for growth in the flat land and gentle slope cultivation of winter corn, should not choose steep slopes, barren land and soil erosion serious fields Planting and soil preparation require that the soil be finely crushed and flat, no large earth blocks should be removed, and field weeds should be removed. Thirdly, selecting good varieties and planting improved varieties is the basis for high yields, so as to ensure the high yield and stable yield of winter corn in order not to affect the sowing season in the spring. According to the climatic characteristics of our county, hybrids with high adaptability and high yield and early maturity should be selected. Variety No. 2 and other varieties are more suitable. Fourth, timely sowing, reasonable close planting of winter corn is the best sowing date in the middle and late lunar winter months. When planting, sufficient base fertilizer should be applied, and 1,000 mu of farmyard manure, 20-30 kg of normal calcium, and 8 to 10 kg of potassium sulfate should be used as base fertilizer. All the width and width of the line broadcast, large line 90 cm, small line 40 cm, 45 cm ponds, sowing 4 to 6 per pond, to ensure a full seedlings, Dingxiang leave two plants per pond, mu 2280 ponds 4560 basic strains. Wherever possible, the plant can be planted in a targeted and densely planted planting manner, using a (0.7 m +0.5 m) standardized planting of 0.25 m or a 0.7 m 0.2 m single plant with row spacing to ensure that there are 4400 to 4500 plantings of basic plants per mu. All the mulching of the plastic film shall be carried out. The seeds shall be sown first and the back cover film shall be used. The cover film shall be tight with the cover. The mulch film shall be tightened, stretched, laid out, laid evenly, and a shallow ditch shall be opened around the film to press the mulch with earth pressure. Tight, tight, to prevent the wind from loosing the film. Fifth, to strengthen field management First, the regular inspection of the plastic film, after sowing, if found that the film has damaged the ventilation area should promptly seal with fine soil (including the seedlings). The second is to break down the membrane and adjust seedlings in time. When the corn seedlings are basically released, the seedlings will be broken and the seedlings will be planted in time. Generally, two seedlings will be left per pond, and the seedlings will generally be one inch in size. There is a shortage of ponds to make up for the lack of ponds. After releasing the seedlings, the seedlings shall be sealed with fine wetlands. If the climate is abnormal and the temperature is lowered, the membrane-breaking time may be prolonged to prevent the phenomenon of freezing dead seedlings and reduce losses. The third is timely irrigation, when the drought is severe, water is irrigated in areas where there is water, and irrigation is performed along with the irrigation to prevent flooding. The fourth is comprehensive prevention and control of pests and diseases. In the winter, it mainly focuses on prevention and control of diseases such as corn rust, leaf spot, gray leaf spot, downy mildew, corn borer, and armyworm. In the demonstration area, high-efficiency, low-residue pesticides are selected for spray or centralized prevention and control. After the maize grouting is solidified and the wax is cooked, the lower leaves of the corn plants can be removed by 2 to 3 to remove field weeds. This is conducive to ventilation and light in the field to reduce the damage of corn leaf spot stalk rot. Sixth, reasonable topdressing winter early corn fertilizer to grasp the timely application of Miaofei, heavy panicle fertilizer principle, seedlings grow to 7 to 8 leaves, the amount of fertilizer at the end of the application of farmyard manure and phosphorus and potassium fertilizer, Mu topdressing urea 20 to 25 kilograms, 30 to 40 kilograms per mu were replanted at the beginning of the corn crop. Seventh, timely harvesting of winter corn has a great difference in growth period and fertility characteristics, and at the same time, the contradiction with the competition for planting in the spring is prominent. In the harvest of winter corn, it is necessary to determine a reasonable harvest time so as not to affect the yield of winter corn. When it is not mistaken for farming, it is generally harvested when 7-8 percent of the winter maize leaves are cooked. The harvest of fresh glutinous corn can be harvested and marketed according to maturity and market demand.
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