I. Isolation planting, sowing in stages Due to the hybridization of sweet, waxy corn and common corn starch powder, the grain can easily become ordinary corn, losing its sweetness and savory properties. Therefore, the planting of sweet and waxy corn must be isolated from ordinary corn and can be isolated by time and space. In order to obtain better economic value, plant cultivation techniques such as mulching, seedling transplanting, tray seedlings transplanting and even greenhouse cultivation can be adopted. The seedlings are planted in batches every 5-7 days. In general, nitrogen-phosphorus-potassium compound fertilizer (10-8-7) is used for 35-45 kg per mu, and 0.5-1 kg of zinc sulfate is used as base fertilizer. Take large and small rows of planting methods, large row spacing 80-90 centimeters, small row spacing 50-60 centimeters, depending on the density of plant spacing, sowing depth to seed into the soil 3-5 centimeters, 2-3 seeds per hole sowing, per acre Amount of 1-1.2 kg to ensure full seedlings. Second, timely fertilization according to different levels of fertility and different varieties of fertilizer requirements for formula fertilization, the general application of pure nitrogen per acre, phosphorus pentoxide, potassium oxide were 16-20 kg, 10-15 kg and 15-20 kg . The nitrogen fertilizer in the base seed fertilizer is concentrated in the sowing line between the hole, generally accounting for 30% of the total application rate, seedling fertilizer accounted for 10% -20%, when the seedlings 3-4 leaf age when the topdressing, pay attention to large seedlings are not applied or less, The seedlings are applied in multiple ways to promote the balance of the young seedlings; the panicle fertilizer consumption accounts for 40%-50%, and is reapplied when the 7-8 leaves are unfolded; the sweet and waxy corn are harvested during the milk ripening period, so the grain fertilizers generally do not need to be applied again. In the initial stage of grain filling, grain fertilizer should be applied as appropriate according to the characteristics of the previous fertilizer and seedling conditions, and biochemical preparations can also be sprayed on the leaves to promote grouting. Third, pest-free control of diseases and insect pests By using milk transplanting, early filming and other measures can effectively avoid the early generation of aphid damage. For underground pests, such as earthworms, cockroaches, and ground tigers, phoxim or 90% crystal trichlorfon 250 grams water 5 kilograms dissolved in 100 kilograms of chopped weeds, made bait, scattered in the evening On the trap. It can also be sprayed in the middle of young larvae with 25% quick killing emulsifiable concentrate 1000 times or 52.5% farmland emulsifiable concentrate 1000 times. When controlling corn borer, it can be inoculated with Trichogramma ovoid block at the big bell mouth stage, which is ideal for biological control, or adopts high-efficiency, non-residual agent control to improve product safety. It can also be used to control the aphids in 5% of Fructus lycopersicum suspension liquid 1000 times or 25% fast killing emulsion 1000 times or 48% chlorpyrifos 100%. The overall control effect is more than 90%. The control of sweet and glutinous maize dwarf mosaic virus disease is generally solved through the selection of disease-resistant cultivars. The control of sowing of corn rough dwarf disease avoids the period of sensational disease, plus pest control and disease prevention, prevention and control of SBPH effect. In addition, sweet and waxy corn should be protected from rodent damage from the start of emergence to harvesting. In the event of a typhoon, rainwater should be promptly drained and collapsed to reduce losses. 4. The appropriate harvesting period for different varieties of timely harvested ear should be based on the characteristics of the varieties and the temperature characteristics of the current season, and at the same time, actual dynamic measurement and tasting will be determined according to the utilization and processing requirements.
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