At present, wheat in various places has been in the heading and flowering period, do you know how the wheat is flowering? And how to judge that the pollination of the flowers has been completed? Because the wheat flowering period is more sensitive and fragile, so the field management such as watering and spraying should pay attention to, a little carelessness will affect the wheat, resulting in a reduction in yield, today I will talk to you about the wheat flowering and some precautions, understand the good management.
First of all, let's talk about how wheat is raised. Wheat is a self-pollinating crop, and the pistils and stamens are in one sheath, and when you see a flower, you have actually pollinated it. After the wheat is pollinated, the flower column will be pushed out of the guard, and during the pushing process, the glume shell will be in an open state, and then it will quickly enter the ovary expansion stage. Speaking of which, some people will definitely say that since seeing the flowers means that the pollination has been completed, then why should we pay attention to watering and spraying? Here we must understand that seeing the completion of the pollination of the flowers is only a description, and it will take about three days for the whole wheat to be completely pollinated under the condition that the temperature is suitable.
Generally, when you see the flower, it is the middle, that is to say, the pollination of the middle of the entire wheat ear begins to be completed, and then the upper and lower parts are followed in turn, which can also be divided into the early stage of flowering, the middle stage of flowering and the end of flowering, and the above also said that it takes three days for the whole wheat ear to be pollinated, and it takes about three to four days for the whole wheat field to be pollinated, which is still in the case of suitable temperature. Part of the time is from nine to eleven a.m.
Generally speaking, when more than 80% of the flowers in the field have turned white, it means that the pollination is basically completed. Because the pollination is completed, the yellow flowers will show white flowers after being exposed to sunlight.
The plots that need to be watered and sprayed during the wheat flowering period must pay attention to these points: first, it is forbidden to spray fumigant and pungent pesticides, and second, do not spray any herbicides. If it is necessary to spray the flowering period due to various factors, then we must avoid the full flowering period and try to spray it after 3 o'clock in the afternoon.
Secondly, watering can not be watered casually, if the flowering period catches up with watering, do not take sprinkler irrigation, because pollination takes three or four days, when the flower column is pushed out, the shell is in an open state, if this time sprinkler irrigation, the pollen will cause swelling and cracking due to water absorption, resulting in a decrease in wheat seed setting rate.
In addition, do not flood irrigation during the flowering period, at this time the wheat root system has begun to decline, flood irrigation is likely to cause root hypoxia suffocation, because the root system needs oxygen to breathe, and the amount of watering is too large (long-term seepage) oxygen will be discharged from the soil, so that the root system will not have more oxygen to breathe, so that the hypoxic suffocation occurs, and even will cause the occurrence of premature aging of wheat in the later stage, the decline of 1000-grain weight, and affect the wheat filling, so it is best to water all the water in one hour during the flowering period.
To sum up, wheat belongs to self-pollination, generally see the wheat ears when there are flowers on the pollination indicates that the pollination has been completed, but this does not mean that the whole wheat ear or the whole field of wheat has been pollinated, this only represents a certain section of the wheat ear is completed, because the wheat ear pollination starts from the middle, and then the upper and lower parts, the whole wheat ear pollination is completed in the case of a suitable temperature It takes about three days, and the whole field pollination is completed (in the case of a suitable temperature) It also takes about four days to complete. To understand these, we should also pay attention to watering and spraying during this period, so as to make the wheat pollinate normally, increase the number of grains per ear and the weight of 1000 grains, and lay a good foundation for the bumper harvest of wheat.
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