Will the high temperature in summer cause poor pollination of corn? What are the control measures of maize leaf curl and head smut?

There are always all kinds of problems in the process of corn planting, so we should pay close attention to the growth of corn if we want to ensure the high yield of corn. So will the high temperature in summer cause poor pollination of corn? What are the control measures of maize leaf curl and head smut?

Will the high temperature in summer cause poor pollination of corn?

With regard to whether high temperature weather will affect corn pollination, I believe many friends know the answer, and have encountered such things more or less, especially in summer corn planting areas, during the period of pollination, it happens to be in the summer day (most areas), if it is noon, the temperature can exceed 35 degrees (or even reach 40 degrees in some areas), and corn pollination in such a high temperature will be affected.

The corn flour is on the ear above the plant, and when it comes to pollination, it will automatically fall, and then some of it will fall on the ear of corn, and finally grow into a corn cob.

When the temperature is higher than 35 degrees (or higher), it is not conducive to the formation of pollen, such as the male ear can not blossom, resulting in the hindrance of loose pollen, or the development of the female ear is blocked, abnormal, and the silking of the female ear is delayed. In this case, poor pollination occurs, either unfruiting or blighted grains.

If the high temperature lasts too long, the pollination period may be shortened. in this way, the number of non-sticking will increase, which will have a great impact on the final yield.

When there is hot weather during corn pollination, what should we do?

For particularly serious plots, artificial pollination can be taken in two ways:

1. Collect pollen manually, then put it in a container and sprinkle it on the female ear that is not good for pollination, but pay attention to the operation, first sprinkle lightly, and then choose the morning to avoid rainy and windless weather to carry out artificial pollination. However, the work is very intense, and it is easy to say that a small area of land is not suitable for farms, co-operatives and large farmers, because the labor is too heavy.

2, directly shake the corn plant, let the pollen fall, pollination, you can use the rope, but also pay attention to, the shaking range is not too large, and then, as above, choose the morning, windless and rainless weather.

In addition, some friends also responded that when the temperature in the field is too high, we can reduce the problems in the field by means of irrigation. This method can also be tried, and it can also be used to part of the drought, but we should also take into account things that are easy to lodge.

Second, what are the control measures of maize leaf curl and head smut?

1. Curl of corn leaves

Some varieties are more sensitive to climate change, if the alternation of dry and wet caused by drought and rainfall or the alternation of hot and cold formed by high temperature and relatively low temperature will make maize leaves curl. This kind of curl usually occurs from the stage of trumpet mouth to the stage of anthesis.

This situation mainly occurs in individual varieties, the light ones only curl the parietal leaves and gently bend sideways, and in the severe cases, the parietal leaves almost touch the ground, showing a bow, the plants are completely erect, and the male spikes begin to disperse pollination normally, and the female spikes begin to spin normally, which does not affect normal flowering and pollination. In addition, some varieties are sensitive to climate due to genetic reasons, and sometimes there is a brief phenomenon of leaf distortion and lateral bending, which usually unfolds naturally within a week, and does not affect normal flowering and pollination, so there is no need to worry.

2. Head smut

Precautionary measures:

① selected varieties resistant to head smut.

② broadcasts late in due course.

The main source of bacteria in ③ soil is that the disease occurred in the field and did not clean up in time and did not clean up before the bacteria matured.

④ manure carrying bacteria means that our cattle and sheep eat plants with silk black bacteria, and the bacteria still survive after penetrating the intestines, and finally return to the ground with the feces, so the diseased plants must be buried or burned, and cattle and sheep must not be raised.

⑤ must choose coated seeds, and must choose high-quality coated seeds.