When sowing, the seeds can be taken out and soaked in warm water at 60 ~ 70℃ until the water temperature is naturally cooled, and then soaked for 4 ~ 5 days to make the seeds absorb water and fully expand. After surface bleaching, the seeds are layered and mixed into clean creek sand with water content of 5% to accelerate germination, and the sand bed should be kept moist to promote germination. After 3 ~ 4 days, the radicle can be sown, and the radicle should not be too long to avoid sowing difficulties.

After sowing, water regularly to keep the soil moist and remove weeds in time. Generally, seedlings can be unearthed in about 7 days. Avoid direct sunlight at seedling stage. In May, a sunshade net should be set on the seedbed, and the height should be above1.5m.: You can raise seedlings without shading nets in March. When the seedling height is 10cm, 20% of dilute human excrement and urine can be collected, and when the new shoots15 days are mature, 0.2% ~ 0.4% potassium dihydrogen phosphate can be sprayed, and15 ~ 20 days can be fertilized once.

50% carbendazim can be sprayed 800 ~ 1000 times to control diseases, and triadimefon can be added when powdery mildew appears. Two months later, when the seedlings are more than 25cm high and the stems are about 0.4cm thick, they can be transplanted to the field for planting. The seedling stage is too long and there are too many roots, which are easy to damage the roots and affect the survival rate. It is best to sow in July of that year and replenish seedlings in August, so that the young trees in the whole orchard can grow neatly.

Extended data:

Sugar in sweet corn fruit includes: glucose, D- mannose, D- maltose and D- arabinose; Organic acids mainly include tartaric acid, malic acid, citric acid, oxalic acid and succinic acid; Amino acids mainly include serine, proline, alanine, 2- piperidinic acid, phenylalanine and leucine. In addition, it also contains vitamin B 1, vitamin C, phytic acid, pectin and 5- hydroxy -2- oxo-3,5-hexadiene aldehyde.

Sweet corn is rich in vitamin C, which has the functions of anti-oxidation, anti-melanin production, skin whitening, anti-tumor, anti-cancer and scurvy prevention.

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