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This problem usually occurs after using a large number of pesticides, and when using herbicides in vegetable fields, if you do not pay attention to the use of herbicides, it is easy to cause the herbicides to drift to the leeks, and there will also be the problem of leek burning. However, if it is a herbicide problem, there should not be the subject's ** phenomenon, but more yellowing and whitening.
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"Dry tip" is a common physiological disease of leeks, which directly affects its commodity value.
Leek "dry tips" can be caused by:
Hazardous gas hazards. Ammonium bicarbonate is administered.
or unrotted organic fertilizer, will release a large number of harmful gases, if can not be ventilated in time, prone to leeks "dry tip" phenomenon.
High temperature hazards. Protected leeks grow in a high temperature environment above 30 for a long time.
Below, it is not cooled and controlled in time, and the air is dry, which is easy to cause the leeks to dry and yellow.
Excessive application of fertilizer and acidification of the soil. If a large amount of acidic fertilizer is applied, it will cause the soil to be too acidic, resulting in dry leeks.
Improper ventilation. Due to improper ventilation, it causes "flashing seedlings".
The soil is arid. Excessive soil drought can also lead to the occurrence of "dry tips".
Improper medication. The use of pesticides in the germination period of early winter is too large, which can easily lead to the drying of leek leaf tips.
According to the causes of the occurrence of "dry tips" of leeks, the following methods can be taken to prevent and control them:
Try to apply less ammonia-containing fertilizer, organic fertilizer should be fully decomposed before applying, if applied, timely ventilation to discharge harmful gases to prevent gas damage.
Avoid excessive application of acidic fertilizers to prevent soil acidification; For soils that are too acidic, lime can be sprinkled for adjustment.
Timely cooling and timely watering, and nitrogen fertilizer supplementation to enhance the heat tolerance of leeks.
Control the dosage of pesticides, try to use less pesticides containing manganese, and it is best to avoid the germination period of leeks to prevent leek sprouts from being harmed by pesticides.
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I once had a dream under the white plum tree, in which the queen mother took Bin Er's hand and said to Bin Er that in the future, the queen mother would be the most powerful pillar of Bin Er's crippled foot. You won't let anyone look down on Bin Er anymore, Queen Mother, at that time, you looked very gentle, holding Bin Er's hand, although a little cold, but it gave me a completely different kind of family warmth. Bin Er always remembered that moment, thinking about it repeatedly, perhaps the memory beautified the reality, and in the end, it was really as beautiful as a dream.
Bin kept repeating this dream, and then every time she woke up, it was a heartbreak. The feeling of waking up from a sweet dream is more terrible than a nightmare.
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