Meizhen 204 is a two-color supersweet corn hybrid derived from the breeding of American resources. It is a temperate type variety, and it is cool, hot and humid; it has the characteristics of large spikes, long and straight ears, full grain, and bright colors. Therefore, it is highly respected and favored in countries such as Japan and South Korea. In Gansu, Wuhan, Beijing, Dalian, Kunming and other places have a good performance; sweet corn is a fruit and vegetable as a thing, as the world's popular food. After many years of experiments, it has been shown that if Meizhen 204 is cultivated, the yield will be higher and the benefit will be more obvious. The key technologies for high-yield cultivation are summarized below and shared with everyone: 1. Select plot 1.1 The cultivated land is selected to have a higher level of soil fertility, convenient irrigation and drainage, adequate light, and abundant rainfall, and the former crop is preferably a non-corn plantation plot. 1.2 Isolation: In principle, time, space and obstacle isolation methods are used. Planting in the wrong season with other corn varieties is advanced or postponed for more than 30 days, more than 300 meters or not less than 150 meters. 2. Nursery transplanting or live broadcast in the field Adopting seedling transplanting can not only save seeds, but also strive for full seedlings. It can also make plant growth consistent and increase yield. (1) To determine the appropriate sowing date, every one day change in the sweet sowing date of sweet corn will change 1.5 to 3 days in the mature period. If the seeds are sown late in the autumn, the low temperature is likely to occur in the later period. The average daily temperature of the sweet corn in the grain-filling period cannot be lower than 20°C. Otherwise it cannot mature. Premature sowing is often caused by high temperatures, shortened vegetative growth period, and short plants. It is also not susceptible to high temperature killing of flowers during tasselling. The suitable sowing date should be determined after years of multiple trials, and batches should also be sowed in stages according to market sales and processing conditions. (2) Selection of fat bed nursery soil with loose, fertile plots for seedbeds, 50 grams of urea per square meter available, 250 grams of superphosphate, 50 grams of potassium chloride, 10-15 kilograms of human waste, 10 days before sowing Apply to the seedbed, turn soil and mix well until broadcast. To dilute the seeding and sowing, cover with plaster, put a little carbofuran on the ash and wet the seedbed to prevent rats and insects from harming, then cover the sun with straw or black shading nets. After uncovering buds, remove the cover. ?? (3) The plant is divided into two rows for reasonable and dense planting with a width of 1.2 meters, with a large row spacing of 0.9 meters and a small row spacing of 0.3 meters. Each three belts are opened every 3.6 meters. ditch. The two rows of corn on both sides of the small row were staggered in an “S†shape. When transplanted, the leaves were oriented, and the leaves were perpendicular to the large row spacing. Density depends on the size of the panicle type. Generally, large panicle type varieties such as Zhetian No. 3 have a density of 3000-3500 per mu and a plant spacing of 0.3-0.35 meters, while those with a smaller panicle type are preferred. Mu planting 3500-4000 strains is appropriate. After transplanting, lightly exfoliate human urine to facilitate rooting. 2.2 Live broadcast (1) Sowing before sowing can promote germination; sweet corn seeds shrink and dry, weak top soil, should be appropriately shallow sowing, to maintain the sowing depth of 3 to 5 cm, the sowing rate of 2 to 3 per hole. Delayed the amount of increase or decrease of broadcast in advance. 3. Scientific fertilizer 1, Meizhen 204 sweet corn to high-yield, must be 'before heavy and light' as a principle; in fertilization techniques, should be 'appropriate base fertilizer, early application of Miao Fei, Shi Shi strong stalk manure and re-appropriate attacking fertilizer' As a guideline. 2, the general standard fertilizer 3250-3750 kg. Among them, base fertilizer accounted for 40%-50%; Miaofei accounted for 10%; Strong stalked fertilizer accounted for 12%: Attacking panicle fertilizer 28%-38%. The basal fertilizer used about 1500 kg of rotted bar fertilizer, 10 kg of urea, 25 kg of calcium magnesium phosphate fertilizer, and 10 kg of potassium chloride. The shallow ditch was applied between the small rows, and then it was reconstructed into small loquats. Miao Fei after transplanting survival urea 8 kg, flushing water. Strong stalk manure is generally applied at 10 kilograms of urea at the beginning of jointing. Attacking panicle fertilizer in the big bell-mouth period or 7-10 days after pollination Mu 25 kg or more urea, open a deep hole to increase fertilizer efficiency. 4. Strengthening the management of sweet corn is weak in the early stages, and it is very important to strengthen seedling management. Because it is particularly sensitive to moisture, it should keep the soil moist, and it should be drained in time when encountering flooding, and it should be watered promptly in case of drought. After transplanting and survival, combined with timely fertilization and timely weeding and weeding: during the jointing stage to the small bellmouth stage, a shallow cultivator is used in combination with the strong stalk fertilizer; the soil is combined with the panicle fertilizer at the big bellmouth stage to deepen the roots and enhance disease resistance. ability. The main pests of autumn sweet corn are seedling stage tigers, armyworms, and corn pods at the ear stage, especially the ear formation period is slightly longer than that of spring corn. Therefore, the damage caused by corn borer is also heavier than that of spring corn and should be focused on The corn borer was controlled during this period so as not to invade the ear and affect the quality. Generally available cypermethrin and other pyrethroids low toxicity pesticides for prevention and treatment. 5. Timely Harvest Because sweet corn is mainly eaten and processed, and harvested is not tolerated for a long time, it should be timely harvested when the seed color turns slightly or when the filament turns black. The wells are matured in batches to avoid harvesting prematurely or too late to ensure the quality and yield of the ear.
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