Maize is a dichogamous crop of the same sex, and the male flower (smallpox) of the same plant is opened several days earlier than the female flower (cob) so as to avoid pollination from the plant. In natural conditions, the natural hybridization rate is about 95%. If artificially forced self-crossing (self-pollination) is less fertile and the grain is small, the yield is greatly reduced. Therefore, using septa or emasculation measures, corn production can increase by about 10%.
The septum sterilizing effect is better than the emasculation of the septum, because the septum emasculation can be artificially regulated, so that the adjacent plants of the emasculated plant are both male and female, which increases the chance of alien pollination. The detassel should be pulled out by hand when the male flower (smallpox) is drawn from the heart leaf by about half, and the plants on the side and the head should not be emasculated. The male stalks that are removed are often lurking in corn stalks. Therefore, the males that are pulled out should be thrown out of the field or buried deep to prevent the corn stalks from climbing out and harming the corn. The emasculated strains in the whole corn field are generally not more than 1/2 of the total number of plants to prevent poor pollination and affect seed setting and yield.
The male inflorescence is extremely weak in photosynthesis after the completion of all male flowers. It depends on the product of photosynthesis of the leaves and survives. Like a parasol, it covers 20% to 25% of the sunlight to the whole field, greatly reducing the photosynthesis of the leaves. Features. The pollinated male inflorescence is cut off with a trowel – “cutting the topâ€, which can make maize ripe and increase yield.
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