Corn has a good taste and high nutritional price. It is not only a grain of grains, but also a vegetable. It is sought after and loved by many people. The corn planting technology Hui Nong.com has introduced a lot for everyone. Today, we will introduce a high-efficiency planting technique for fresh sweet glutinous corn in the northern region for your reference!

1 Choose good varieties, isolate planting

Sweet waxy corn varieties should have the characteristics of moderate sweetness, pure aroma, soft texture, rich nutrition and good appearance. Because of the hybridization of sweet waxy corn and common corn stalk powder, it is easy to lose the seed (sweetness and astringency) of the original corn variety. The worse the isolation condition, the better the quality decline. Therefore, planting sweet waxy corn should be isolated from ordinary corn.

Isolation method: 1 Spatial isolation: Within 300~500m around the planting of sweet corn fields, there is no ordinary corn or other types of corn that blooms with sweet corn. 2 Time isolation: that is, in the same planting area, the sweet corn planting period is advanced or pushed back, so that the flowering period is staggered for 20 days or even longer with other corn in the adjacent plot. Through natural barriers such as trees, orchards, villages, mountains, and rivers, foreign pollen is blocked and isolation is achieved.

2 Reasonable close planting to promote strong seedlings

The commercial quality of fresh sweet glutinous corn is closely related to the planting density. Most sweet glutinous corn varieties have multiple spike characteristics, that is, one can grow two or more ears, and more rare plants. Therefore, the suitable density for planting sweet waxy corn in production is generally 6-75,000 plants/hm2, the density of early-maturing varieties is slightly larger, and the density of late-maturing varieties is slightly smaller. In order to concentrate nutrients to supply main stems and ears, to ensure the commerciality of ears and improve the field. Ventilation and light transmission conditions, in view of its characteristics of tillering, it is necessary to remove the tillers in time to eliminate weak plants.

Before sowing, select seeds with good development and high germination rate, and remove the insect seeds, bad seeds and mildew seeds by selective grading, and soak seeds according to size. At the same time, the application of nitrogen, phosphorus and potassium compound fertilizer as seed fertilizer before planting ensures that the seed germination and emergence has sufficient nutrient supply and promotes the early growth of strong seedlings. When planting, control the soil water content, take large and small planting (large row spacing 80~90cm, small row spacing 50~60cm), the plant spacing depends on the density of the planting, the seeding depth is 3~5cm, 2~3 capsules per hole, the seed amount 15~18kg/hm2 to ensure the whole seedling. In case of drought after sowing, it can cover straw and straw to prevent the soil from losing water, causing the seeds to fall back to buds and not to be seedlings. At the same time, in case of heavy rain, it can effectively prevent soil compaction and cause boring and rotten buds.

3 balanced fertilization, scientific management

Fresh corn has the purpose of feeding early and tender ears, and the growth period is short. Therefore, management should be early seedling, early tillage, early weeding and early fertilization. According to the characteristics of short growth period of sweet and waxy corn, organic fertilizer is added to improve soil fertility and increase nutrient accumulation of grain. Fertilization should be formulated according to different soil level and fertilizer characteristics of different varieties. Generally, N, P2O5, and K2O in the 1hm2 fertility field are 240-300kg, 150-225kg, and 225-300kg, respectively, and 30% of the nitrogen fertilizer is used as the base fertilizer in the seeding hole; 10%~20% is used as the seedling fertilizer in the seedling 3 When applying ~4 leaves, pay attention to the application of small seedlings or less application, and apply small seedlings to promote the balance of seedlings; use 40% ~50% for panicle fertilizer, and apply it when 7~8 leaves are unfolded to promote the ear The growth of the leaves and the differentiation of the ears mainly focus on the big ears.

Sweet waxy corn can be harvested in the milk ripening stage. Therefore, in the early stage of grain filling, the amount of fertilizer and seedlings should be applied as appropriate in the early stage of grain filling. It is also possible to spray biochemical preparations on the foliar surface to promote grouting, to achieve large grain fullness, and to improve the morning market. The appearance of the product. Topdressing should be combined with cultivating and weeding for 10~15cm. Phosphorus and potassium fertilizer should be used as a base fertilizer to promote the early growth of strong seedlings. At the same time, fresh corn should pay attention to supplementing corn micro-fertilizer to improve quality and yield.

4 Pest control

4.1 Agricultural control

First, reduce the number of insect sources by ploughing and smashing, and use less or no pesticides. It is preferred to use high-efficiency, low-toxic, low-residue pesticides and bio-pesticides. It is also possible to effectively avoid the hazards of early generations of aphids by means of seedling transplanting and mulching.

4.2 Chemical control

For underground pests such as cockroaches, crickets, and ground tigers, 5kg of phoxim or 90% crystal trichlorfon 250g can be used, and then dissolved and sprayed on 100kg of chopped weeds to make poison baits, which are applied to the ground in the evening to lure. It can also be used for full-scale spray control at the peak of young larvae with 25% chlorpyrifos 1000 times solution or 52.5% farmland emulsifiable concentrate 1000 times solution. Corn borer can be inoculated with Trichogramma eggs in the big bell stage for biological control, or high-efficiency and non-residual bio-agents can be used for prevention and control. It can also be used with 5% Regent suspension 1000 times solution during the silking period, or 25% fast killing emulsifiable concentrate 1000 times, or 48% chlorpyrifos 100m L for prevention and control, the control effect is above 90%. In the pollination pollination period, if it is rainy or cold, it is easy to cause uncoordinated growth or pollination of the male and female ears, timely artificially assisted pollination, increase grain, reduce baldness, and increase the yield and commercial value of the ear.

5 timely harvest

Different varieties should be determined according to their trait characteristics, seasonal temperature and processing and utilization requirements. At the time of fresh ear market, the sweet corn was 17~23d after flowering and pollination, the super sweet corn was 20~28d, the sweet corn was added at 18~30d, and the late-maturing variety could be extended for 3d. The suitable harvesting period of waxy corn is suitable for 18~25d after corn flowering and pollination. However, in the case of spring sowing, the harvesting period is in the high temperature season, and the suitable harvesting period is very short. In the case of autumn sowing, the harvesting period is in the cool season, and the suitable harvesting period is relatively long. Fresh corn should also pay attention to preservation, short-term preservation should not be stripped of the leaves, and the temperature should be spread as much as possible during transportation. The time from picking to listing of super-sweet corn should be controlled within 2 hours. The waxy corn can be slightly longer, but also To be controlled within 24h.

The above is the cultivation point of sweet corn, and the farmers who need to learn can come and see it, or they can recommend it to people who need it as well!

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