Note on the cultivation of autumn cucumbers: it is not appropriate to apply a large amount of high potassium fertilizer

At present, the autumn sorghum cucumber has gradually entered the melon period. At this time, the vegetable farmers are accustomed to apply a large amount of high-potassium water-soluble fertilizer in order to promote the reproductive growth of cucumber, that is, to accelerate the growth of melon strips, but the author I think this is not appropriate.

秋茬黄瓜种植注意事项:冲施大量高钾肥不妥

This is because vegetative growth is the basis of reproductive growth. Nutritional growth provides sufficient water, mineral nutrition, carbohydrates, etc. for reproductive growth, which means that reproductive growth is dominated by vegetative growth. It is understood that for every 1000 kg of cucumber produced, it needs to absorb 4 kg of pure nitrogen, 3.5 kg of pure phosphorus, 5.5 kg of pure potassium, and the ratio of NPK is 1.2:1:1.5. From here we can know that after the cucumber enters the flowering period Nutritional growth and reproductive growth go hand in hand. If you only pay attention to the application of high-potassium water-soluble fertilizer at this time, it will inevitably lead to the imbalance of vegetative growth and reproductive growth, which will make the vegetative growth of cucumber weaken, the flowering and fruit setting of cucumber plants will also be reduced, and the development of melon strips will be restricted. There are malformed melons such as big head melon and pointed melon.

In this regard, cucumber cucumbers are recommended to fertilize according to their fertilizer requirements, and balanced fertilizers should be used during the growth period. However, in the large number of melons, the demand for potassium fertilizer is increased, so it is necessary to intercalate and apply high potassium water. Fertilizer, can be balanced with two high-potassium fertilizers at the beginning of the melon, and two high-potassium fertilizers can be combined with a balanced fertilizer, such as 963 intelligent fruit-expanding special fertilizer (21-8-21). Toyota A (20-10-30+TE) and so on.

秋茬黄瓜种植注意事项:冲施大量高钾肥不妥

Another point is that in order to make the plant's reproductive growth and vegetative growth relatively balanced, we also need to do temperature regulation work. Especially in recent times, the temperature difference between day and night has been increasing. Vegetable farmers should make good use of the current environmental conditions, increase the temperature difference between day and night, reduce respiratory consumption and promote nutrient accumulation. For the cucumber that has just entered the melon period, the tree has not yet fully grown, and the temperature should be ensured to promote the vegetative growth of the plant faster. If the tree is relatively strong, try to do a good job of ventilation and cooling, especially to reduce the night temperature and promote its growth. Generally speaking, the shed temperature is controlled at about 30 °C during the day, the night temperature is controlled at about 18 °C, and the temperature difference between day and night is preferably between 10 ° C and 15 ° C to properly inhibit vegetative growth.

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