What if the latest corn ear is not satisfied with its tip?

The unsatisfied tip of corn ear is also called ear bald tip, which refers to the phenomenon that the top of corn ear is not firm and the grain is not full. It will seriously affect the yield of corn, seriously harm the yield of corn, and affect the economic income of farmers. So what should we do if the corn ear is not satisfied with the tip? Let's get to know it with the editor.

1. Attack Sui Fat

The ear fertilizer of corn is the topdressing of corn 10 days before heading, which is the period when the vegetative growth and reproductive growth go hand in hand, and the young ear differentiation enters the peak period of female and male floret differentiation, which is the key period to determine the ear size and grain number. It is also the period when the largest amount of fertilizer is needed in the whole growth period of corn, which accounts for more than 50% of the total topdressing fertilizer at this stage. Especially for the plots in the middle and low producing areas and in the later stage, it is necessary to attack ear fertilizer and increase the amount of topdressing, generally applying 25-30 ammonium bicarbonate per mu, while adding appropriate phosphorus and potassium fertilizer to increase the grain tip.

2. Castration every other line

When the male ear of corn is just exposed and the pollen has not yet been released, it is necessary to remove a row of male ear every other row, which can save nutrients, concentrate on the ear, make the ear spin ahead of time, and promote the meeting of the male flower and the female at flowering stage to increase the pollination rate and increase the ear kernel. reduce baldness. The time of castration is now between 9: 00 a.m. and 4: 00 p.m., mainly do not damage the leaves. The number of castration accounts for 30% of the total number of plants. 40% of the total number of trees, too much will affect pollination.

3. Auxiliary pollination

In order to further improve the pollination and fertilization rate, it is necessary to seize the time in the flowering stage of corn, collect pollen manually, spread it on the ear, and increase the fertilization rate at the same time. In the process of pollination, if the filament is too long to affect fertilization, the filament can be properly truncated, leaving about 1-2 cm, so that it becomes a cashmere ball, which is not covered up each other, which is conducive to pollination and fertilization. Auxiliary pollination can greatly reduce the bald tip phenomenon, increase the grain, make the ear full, and improve the yield and quality.

4. Drought resistance and drainage

In the filling period of corn, water shortage, drought and stagnant water are extremely disadvantageous, if the drought should be watered in time to resist drought, ploughing and loosening the soil after watering to ensure that the corn oil has enough water to complete the filling. If it is rainy, it is necessary to dredge the drainage ditch and eliminate stagnant water in time, which is beneficial to the completion of grain filling.

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