One, choose the variety
Choose varieties that are suitable for consumers' taste and relatively long picking period, and have good yield, suitable sweetness, pure fragrance, soft texture, rich nutrition, consistent ear size, thin seed coat, yellow kernels, white cobs, and seeds Varieties with high germination rate, strong seedling vigor, good resistance, and strong lodging resistance can be sown in stages. The method of staged sowing with early, mid- and late-maturing varieties can extend the picking supply period to increase efficiency. Open field cultivation can be planted from late March to early August. Greenhouse and plastic greenhouse planting can be planted earlier or later. Generally, planting a batch of five months in spring and 15 days in summer and autumn can make the annual supply of sweet corn go on the market one after another.
Two, isolation planting
In order to prevent hybridization with other corn varieties, reduce sweetness and affect quality, sweet corn must be planted in isolation. The isolation area is required to be more than 400 meters, and time difference isolation can also be adopted, and the flowering period is required to differ by more than one month.
The fine seedlings of sweet corn have shriveled seeds, poor ability to germinate and top soil, low germination rate, weak growth potential of seedlings, and higher soil requirements. Generally, deep turning, rake leveling, and fine crushing are required to make the soil loose and have good moisture content, and to create a suitable soil environment for seed germination and seedling growth. Seeds must be carefully selected to remove insect seeds, bad seeds, and mold seeds. When planting, the soil moisture should be suitable, and the planting should not be too deep, and the soil should be about five centimeters. At the same time, ensure that the depth of the soil is the same, and strive for all seedlings. Apply foot fertilizer between the holes, and pay attention to the prevention and control of underground pests. You can use 50% phoxim to dress the seeds or irrigate the roots.
3. Field management
Under the condition of general soil fertility level, phosphorus and potassium fertilizer are applied as base fertilizer at one time. Water management should pay attention to preventing waterlogging in the seedling stage and preventing drought in the middle and late stages. Due to the slow growth of sweet corn, the seedling stage is prone to weeds, so we must be cultivated early to eliminate weeds. Prevent corn borer in time from jointing to big bell mouth, use low-toxic pesticides such as phoxim, and control it during the small bell mouth stage. Use pesticides with caution, less use, and early use, which can effectively control pests without leaving pesticide residues. And affect the quality of corn. Sweet corn is filled to milk maturity, if there are aphids, BT emulsion can be used to spray the ears. Cultivating soil and pressing roots promotes growth, increases yield, and improves sweetness.
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