I. Isolation planting, staged sowing Because the sweet, waxy corn and ordinary corn stalks hybrid, the grain easily becomes ordinary corn, losing sweetness and sputum. Therefore, sweet and waxy corn is isolated from common corn and can be isolated by time and space. In order to obtain better economic value, it is possible to adopt the cultivation techniques such as mulching, seedling transplanting, tray seedling transplanting, and even greenhouse cultivation, and planting in batches every 5-7 days. Generally, 35-45 kg of NPK fertilizer (10-8-7) and 0.5-1 kg of zinc sulfate per mu are used as base fertilizer. Adopting the planting method of large and small rows, the large row spacing is 80-90 cm, the small row spacing is 50-60 cm, and the plant spacing is determined by the apparent density. The seeding depth can be 3-5 cm into the soil, and 2-3 seeds per hole are planted. The amount of seed is 1 - 1.2 kg to ensure the whole seedling.
Second, timely fertilization should be based on different soil fertility levels and different varieties of fertilizer characteristics for formula fertilization, generally applied per mu, pure nitrogen, phosphorus pentoxide, potassium oxide are 16-20 kg, 10-15 kg and 15-20 kg . Nitrogen fertilizers are concentrated in the seedlings, which generally account for 30% of the total application rate, and 10%-20% of the seedlings are applied. When the seedlings are 3 to 4 years old, the seedlings are not applied or less. The seedlings are applied more, and the seedlings are promoted to balance; the amount of panicle fertilizer accounts for 40%-50%, and is reapplied when the 7-8 leaves are unfolded; the sweet and waxy corn is harvested during the milk ripening period, so the granular fertilizer generally does not need to be applied again, but In the initial stage of grain filling, depending on the amount of fertilizer in the early stage and the characteristics of the seedlings, the grain fertilizer should be applied as appropriate, and the biochemical preparation can be sprayed on the foliar surface to promote the grouting.
Third, the pest-free pollution prevention and control through the use of milk seedling transplanting, early filming and other measures can effectively avoid the early generation of aphid damage. For underground pests, such as cockroaches, crickets, and tigers, you can use phoxim or 90% crystal trichlorfon 250 grams and add 5 kg of water to dissolve and spray on 100 kg of chopped weeds to make poison baits, which will be scattered in the evening. Take a trap. It can also be fully sprayed at the peak of young larvae with 25% quick-killing emulsifiable concentrate 1000 times or 52.5% agricultural emulsifiable concentrate 1000 times. When controlling corn borer, the Trichogramma egg mass can be inoculated in the big bell mouth period, and the biological control is most ideal, or the drug with high efficacy and no residue can be used to prevent and control the product. It is also possible to control mites by using 5% Regent Suspension 1000 times solution or 25% chlorpyrifos 1000 times solution or 48% chlorpyrifos 100 ml in the silking period. The overall control effect is over 90%. The control of sweet and waxy maize dwarf mosaic virus is generally solved by selecting resistant varieties. The control of corn shrinkage disease is adjusted to sow date, avoiding the growth period of susceptible disease, plus pest control, preventing and controlling the fly ash to achieve disease prevention. effect. In addition, sweet and waxy corn should be protected against rodents from the beginning of emergence to the harvesting period. In case of typhoon and rain, it is necessary to drain and down in time to reduce losses.
Fourth, the appropriate harvesting period for harvesting different varieties of ear should be based on the characteristics of the variety, the temperature characteristics of the season, and the actual dynamic measurement and tasting according to the utilization and processing requirements.
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