Recently, many growers have experienced such problems, mostly about the yellowing of their own wheat after emergence. What is the cause of yellowing?
Speaking of wheat yellowing is not a new problem, but it should cause everyone to pay enough attention. Otherwise, when big problems occur, it is really busy. The following small series will summarize the reasons for causing yellowing as follows, so that the majority of farmers can refer to it, hoping to help the friends in need.
1. Variety issues. During the autumn broadcast, I once published the opinion on the cultivation of wheat. The first thing I said was the question and importance of the selection. The yellowing caused by wheat varieties is mainly due to the fact that the selected varieties are not suitable for local planting conditions, such as climate and temperature.
2. Land preparation issues. The wheat was not well prepared before planting. At present, most of the farming areas use straw returning technology, which requires higher requirements when cultivating land, should be plowed and swirled as much as possible, and it should be suppressed after sowing. If these are not done well, it may cause the wheat seeds to stalk on the straw, the roots are not well tied, and the nutrition cannot keep up, resulting in yellowing.
Warm reminder: If the wheat seedlings are prosperous, they can be controlled by the method of suppression before winter. Repression suppresses the growth of the seedlings and can be carried out many times before winter. It is necessary to grasp the principle that “the ground is wet and not pressed, the cloudy day does not press the sunny day, and the morning does not press the noon pressureâ€.
3. Pests. After the wheat seeds are planted, they are destroyed by the feeding of golden worms, tigers, crickets, crickets, etc., resulting in either the seeds not germination or the weak yellowing after emergence. Therefore, it is time to emphasize that we must buy coated seeds. If there is no coating, we must also buy insecticides and fungicides for seed dressing.
Treatment method: If the damage is light, the root can be treated. If the damage is heavy, it is necessary to select the replay or choose another seed method according to the weather conditions.
4. Diseases. Yellowing caused by stem rot and root rot of wheat, the yellow wheat seedlings are pulled out to see if blackness or rot occurs. This situation is mainly caused by the lack of coated seeds or seed dressing.
Treatment method: It can be controlled by chemicals, such as Jinggangmycin, triadimefon and antibacterial.
5. Fat damage. Yellowing caused by fertilizer is generally a bad fertilization habit, excessive application of chemical fertilizers and improper application of chemical fertilizers, resulting in burning and burning. Then the selected fertilizer biuret exceeded the standard.
The above is the reason and treatment measures for the yellowing of wheat after wheat planting. For more details, please pay attention to Hui Nongwang!
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