Ten days ago, we said that the violent cooling of the Qingming had finally caused damage to wheat.
Although the cooling was not enough in the biological sense of "cold spring", but because of the rapid cooling in a short period of time, it will bring more damage to wheat. In recent days, I have seen some pictures sent by friends from the circle of friends about some of the symptoms of the wheat being damaged by "low temperature". Some of the symptoms belong to what we have said. Some infertility is inevitable. It will not be known until the wheat is flowered and grouted. These "injuries" now look like the ears are intact, but the number of spikes will drop dramatically.
Figure 1: It is a picture recently sent by friends - the middle and lower part of the tassel is hurt.
I remember that when we said these "harms", we also said that there is no remedial measure after the injury - "There are no effective remedies for all these injuries. Some measures of watering and fertilizing sprays after the "injury" are unlikely to be affected. Damaged ear repair, it is impossible to save the viable pollen grains, and it can only increase the unnecessary investment on the basis of disasters."
Figure 2: A picture recently released by friends - the top of the tassel is degraded. By the way, such performance can not be said to be "infertility" for the time being. It can only be said to be "top degradation" because degeneration and infertility are two different things.
Why do I say this? The reason is simple -
Figure 3: It's a picture recently sent by friends – the same is the top of the tassel.
First, the period of promoting small points into spikes has passed. "Injury" causes some of the main stems and the young ears of the big cockroaches to degenerate directly, and the stems without the growth point are naturally degraded. This phenomenon occurred earlier, especially when the wheat was “dipolarized†or earlier. Some “promoting†measures could also make some small tillers become spikes, but at this time most of the wheat fields have passed that period. Therefore, some measures such as water and fertilizers have no obvious effect.
Figure 4: A picture recently sent by friends - almost the entire ear is degraded.
Second, “injury†has caused some wheat ears to degenerate, so that it is relatively “energy-saving†in the case of reducing the number of groups. If we are still waiting for the "water and fertilizer" at this time, it will make the soil and plants over-nutrition, which will not only waste but also cause the wheat to be late and ripe.
Figure 5: A picture recently released by friends - part of the ear is degraded and the ear part is degraded.
Third, the lack of infertility and infertility that can only be known after wheat flowering and grouting is to reduce or severely reduce the grain number of wheat. When the grain number per spike of wheat is severely reduced, there will be a large amount of “surplus†in the nutrients produced by wheat plants. These “surplus†nutrients will remain in the wheat vegetative body without the strong pull of the grain “libraryâ€. Eventually, the wheat is late and ripe, the grain filling is poor, and the commodity is not good. It will be even worse when a "water and fertilizer" is served.
Figure 6: It is a picture recently sent by friends - the typical "dumb spike" and the approximate "light pole".
Therefore, when Mr. Dong Wei, the Chinese seed business network that has been paying attention to the “this matterâ€, asked me what remedies for the wheat after “harmâ€, my answer is: when there are signs of “nothingâ€, destroy it as soon as possible. If the damage is not too serious, it is ok to prevent and control some other pests and diseases of wheat in time, and there is no need to add "serving" to the "water and fertilizer".
This is a "natural disaster"! Most of them have little to do with the breed, but only the sensitive period of "who" matches the cooling period. In general, some varieties or plots that are planted later and have a higher heading date will be better; wheat “polarization†will be slightly slower and the wheat field and soil with higher soil moisture before cooling will be better. (Plant Business Network)
This article URL: wheat freeze damage has occurred, no water and fertilizer spray is difficult to work
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