In the cold winter, if the cotton seeds are stored in the sun for a week and then stored, it will not only help to increase the germination rate, but also help kill insects and insects, sterilize and prevent diseases. Cotton seeds should be selected for fine weather in winter and winter, and the selected cotton seeds should be spread on the cement drying or reeds, with a thickness of 2 cm to 3 cm, frozen for 5-7 consecutive cold nights, and then dried for 5 days-7 days. In the spring, sowing the sun for another day - 2 days the sun, the effect is better, can increase the emergence rate of cotton by 10% -20%. China Agricultural Network Editor
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