Continuous high-temperature weather will affect the vitality of sweet corn pollen to a certain extent, making it unable to pollinate normally, and eventually leading to the occurrence of lack of grain. Therefore, artificially assisted pollination measures should be taken in time. Generally, artificially assisted pollination is performed at temperatures between 23 o C and 10 o'clock in the morning, and long sticks can be used to lightly push sweet corn plants in order to promote concentrated pollination of the tassels of the maize and tassels and to improve the pollination rate. If the sweet corn planting area is small, pollination and flower pollination measures can be implemented and the effect is better. When sweet tassels are loosened in the morning (normally 30-50 minutes after sunlight exposure), pollen is timely collected from tassels to remove anthers, and sweet corn pollen is placed in wide-mouth plastic bottles, glass bottles or bamboo buckets. Inside, outsourcing a thin layer of silk cloth, to take advantage of the favorable timing of temperature and humidity before 10:00 am, artificial pollination on the filaments spit from the ears of sweet corn, generally only need to aim at filigree light shake 1 times. After 2 days of assisted pollination according to this method, the occurrence of grain deficiencies in sweet corn can be avoided or reduced. The proper irrigation of sweet corn planting fields for 1-2 times can reduce the temperature in the field and improve pollination conditions. At the same time, it can improve the high temperature resistance and pollination rate of sweet corn plants. After pollination, if the filaments of sweet corn have changed from white or red to black, the corn plant has been successfully pollinated.
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