How is the sowing time for summer corn determined? Mastering these methods is enough
How is the sowing time for summer corn determined? Please give guidance. Because the period available for corn growth in summer corn regions is limited, in order to obtain enough heat, allow the corn to fully mature, harvest it in time, obtain a relatively high yield, and not delay the normal sowing of the following wheat crop, the sowing time for summer-sown corn should be as early as possible. That is, winter wheat...
How is the sowing time for summer corn determined? Please give guidance
Because the period available for corn growth in summer corn regions is limited, in order to obtain enough heat, allow the corn to fully mature, harvest it in time, obtain a relatively high yield, and not delay the normal sowing of the following wheat crop, the sowing time for summer-sown corn should be as early as possible. That is, immediately after winter wheat harvest, rotary tillage is used to kill the stubble, followed by sowing, or immediately after wheat harvest a no-till seeder is used for sowing.
According to experiments, sowing one day earlier can extend the grain-filling period by one day, increase grain weight, and raise yield by 1-2.5%. In order to sow early, in some places with slightly insufficient heat resources, summer-sown corn can also be relay intercropped in the wheat rows 10-15 days before wheat harvest, then irrigated with wheat-yellowing water to promote early emergence; by wheat harvest time, the corn has already emerged and grown 2-3 leaves. However, the relay intercropping method makes it difficult to control the plant density, and harvesting wheat after emergence can easily injure the seedlings, especially with mechanical harvesting, where the damage is even more severe, making it difficult to achieve a full stand.
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