Zhao Zhen, a vegetable farmer in Houdagongzhuang Village, Fengnan District, Tangshan City, has planted 3 sheds this year. He has grown tomatoes, melons, green peppers, and autumn stubble cucumbers. He has grown vegetables for 11 years and is also an expert. However, this overwintering cucumber has troubled him. The shrinkage is not long, so it is not anxious to ask Zhang Shangqing, a researcher at the Plant Protection Institute of Tangshan Academy of Agricultural Sciences, via WeChat. Zhang Shangqing believes that this is some physiological problems caused by low-temperature oligophotos, and has given targeted guidance.
Zhao: Teacher Zhang, I have grown vegetables for more than 10 years. I used to grow tomatoes, melon, green peppers, and cucumbers in autumn. I set up 3 more greenhouses this year. I planted winter cucumbers for the first time. The seedlings are ill, and their heads are dangling, not long! Really anxious, can you show me what's going on?
Zhang: Sister, you see that your melon and flowers have been raised to the growing point. This is a typical flower topping or called melon topping, which is also a very easy phenomenon for our northern winter stubble cucumber. The seedlings in the picture are mainly caused by two reasons: First, the root melon is left too early, and the entire plant has too much melon. Before the seedlings grow, a big cucumber is dropped. This management will cause nutritional supply Insufficient, the small melon that comes out later is malformed malformed melon. Management must not be like spring and autumn crops. You are a strong female variety. If you look at this plant, the fourth leaf has a root melon. There are melons in each section above. There is no sparse seedlings. What a melon! It is equivalent to letting a child carry 100 pounds of things, he is not so vigorous, of course not, you can let him grow up to carry another 100 pounds, and there is no problem.
Zhao: I understand raising children. I understand this time. Isn't this the first year of wintering cucumbers? I do n’t know how to do that. Looking at melon, how can I pick it? Besides, I do n’t know how to pick it!
Zhang: You have to be willing! Or if it doesn't grow well, who do you sell it to? The second reason is the climate. Winter temperatures are low and there is little light. What time do you open the curtain in the morning?
Zhao: About 10 o'clock.
Zhang: When does the curtain fall?
Zhao: 3:30 to 4 in the afternoon.
Zhang: If you look at the light for less than 6 hours a day, coupled with the severe haze during this time, often the curtain cannot be opened for a day. The time of light is too short, the time for the leaves to produce nutrients is too short, and the efficiency is too low. You still gave so many small melones without nutrients to grow them, and a melon top was formed.
Zhao: Teacher Zhang, do I still have the rule of law? I want to get out of it.
Zhang: You ’re not too serious. Slowly adjust, you can continue to grow cucumbers.
Zhao: Then you hurry up and talk about it?
Zhang: First, in the past few days, you should thin out the melon and remove the extra melon. According to the growth of the seedlings, you can keep the melon. If you are better, you can leave a melon in 3 to 4 quarters, which is almost 5 to 6 Save one, like the 4-leaf stubble melon just now. The root melons are picked early, and all the small melons on the top are destroyed. First protect the seedlings. This job can't be saved, and cucumbers can't grow without it. In addition, 2 to 3 leaves will be left for the roots next year, or the seedlings will not grow.
Second: Take advantage of sunny days, you can use plant activator plus multiple foliar fertilizer sprays to increase plant stress resistance, supplement nutrients, and increase photosynthesis efficiency, so as to adjust the symptoms of melon topping.
Third: The application of organic compound acid fertilizers when watering can effectively promote roots and shoots, balance soil pH, alleviate salinization, increase soil permeability, retain water and fertilizer, and create a good soil environment for the root system. , This can alleviate the melon topping faster. The root is equivalent to a person's mouth, and the soil is equivalent to a person's meal. With a good mouth and a good meal, it naturally grows strong! The same is true of plants.
In this way, from top to bottom, from management to medication, the causes of symptoms should be solved one by one, and the problem of melon topping can be gradually solved. In addition, next year, we must pay attention to the use of organic compound acid fertilizers twice during planting, and once for planting water and slow seedling water. Select the melon in advance, and spray the plant activator to increase stress resistance, which can effectively avoid the topping of the melon!
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