Summer drying before planting the summer corn not only promotes the early emergence of corn, but also achieves the goal of seedling wholeness, Miao Qi, Miao Zhuang and increase production. First, select the sunny weather before sowing, evenly spread the seeds on the mat, and continuously turn the sun 2 days to 3 days, through the ultraviolet rays in the sun, can kill the bacteria attached to the seed coat, to avoid moisture seed mildew. Second, through the sun, can promote seed ripening and enzyme activity, reduce the water content of the seed, thereby enhancing the seed's water absorption capacity, increase the germination potential and germination rate. Third, the sun can change the seed coat permeability, is conducive to the formation of soluble substances and remove the body of carbon dioxide, thereby increasing the seed's viability, so that the emergence of corn faster and more homogeneous. Fourth, the sun can increase the yield per unit area of ​​summer corn. Tests and production practices have shown that dried seeds not only significantly increase the rate of emergence, seedling maintenance and seedling growth of maize, but also significantly increase the yield of summer maize. According to the measurement, the yield is generally about 5.72% to 8.25% higher than the control.
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