Now the farmer's farmer's farm work is basically busy, but some farmers' friends have found that the wheat has a yellowish condition, so the seeds and fertilizers are fine, why will their wheat be yellow?
Reason one: planted too deep, winter wheat can not breathe
In fact, the reason why this happens in wheat is mainly because the wheat is soaked when it is planted, and this year's rainy weather is relatively high, and the light is relatively small, resulting in poor wheat growth. As the saying goes: one inch shallow, two inches deep, three inches will be stuffy. Once you have found the reason, you only need to strengthen the nutrition regulation, so that the wheat can be stronger, you can safely winter.
Here to remind everyone, we must pay attention to the depth of sowing, wheat seeding density or sowing too deep, it will affect the photosynthesis of wheat, leading to yellowing of the leaves. Therefore, everyone should plant according to the season and temperature, and choose the appropriate seeding depth.
Reason two: It is too cold! Winter wheat has caught cold!
Of course, the yellowing of wheat leaves is not a problem of sowing depth. For example, Song Da, from Shandong, their wheat is also a piece of eucalyptus leaves. The tip of the leaf is yellow and white, thin and transparent. In fact, all these wheats have suffered from freezing damage! Song Big Brother wondered, we planted winter wheat, wintering every year, there will be heavy snow, did not happen in previous years? It turned out that this year's Song Da Ge family planted winter wheat is too early, the general planting time should be from the end of September to mid-October, and Song Da Ge's family was planted on September 17, causing serious freezing damage. So why are wheat seeds susceptible to freezing damage?
It turns out that the rain in the north is still relatively abundant in September, and the amount of wheat planted is relatively large. The bottom fertilizer has too much nitrogen fertilizer, and it grows stronger than the same period of the year! In addition, in mid-November this year, the temperature plummeted, and the wheat transitioned from autumn to winter. Like ours, it was a bit unbearable. Therefore, in some parts of the winter wheat, yellowing, blackening and rot, freezing and drying were observed. And so on.
If you have encountered the same situation during the winter wheat planting process this year, you must pay attention to it. From the current situation, this freeze may bring the next step of wheat to normal growth, cultivate strong seedlings, and bring safe wintering. No small hidden dangers. However, at this time, the application of the drug is no longer a problem, and more is a waste. If you want to recover your losses as much as possible, it is the key to applying drugs after the year.
Reason three: There are bugs! There are bugs! There are bugs!
In addition to freezing damage, there is another reason that can cause large areas of wheat to wither. Wang Da Ge, who lives in Henan, bought a high-yielding wheat seed this year. He originally planned to have a bumper harvest year. As a result, he suffered a large-scale production cut! Wang Da Ge is bitter! How did the good wheat become like this? A yellow seedling was pulled from his home and it was found that the wheat roots had been bitten. Take a closer look, it turned out to be a ghost of the golden worm. This golden worm, which specializes in the main roots of wheat, is the peak of its destruction after the autumn seedling period and the early spring return period. If there is no wheat field for prevention and control before winter, we must pay close attention to the spring wheat in the spring of next year. Once found, immediately control the drug! Minimize losses.
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