Due to the rush of time, the use of chicken manure without sufficient fermentation and decomposing as the base fertilizer, resulting in injury, is the main reason leading to the growing of cucumber. After some cucumbers were burned in roots, the melon seedlings grew unevenly, which was very different, and the burning roots caused by chemical fertilizers were mainly caused by excessive application amounts.
Prevention and control measures: Apply fully fermented and decomposed organic fertilizer, and apply as early as possible. During the growth period of cucumber, apply some biological bacterial fertilizer, such as Jianzhibao and Jizhen brand organic fertilizer. For young seedlings with weaker growth, you can use the harvest No. 1 800 times for root irrigation. The amount of fertilizer applied should not be too large. The amount of flushing can not exceed 30 kg per time.
Reason two: Poor watering
The ground is low and uneven. When watering, the water supply to the plants will be uneven. There will be less water at high elevations and low water at low elevations. In addition, many vegetable farmers will apply some fertilizer when they are watering, which will also cause the plants to grow. The reason for Qi.
Prevention and control measures: Level the ground, and combine groundwater with small water. Avoid some seedlings pouring, and some can't be poured. At the same time, excessive water in the front of the greenhouse should be prevented to prevent the lack of oxygen in the root system.
Cause three: root knot nematode damage
In some greenhouses, root-knot nematodes harm the roots of cucumbers. Because the harm levels of nematodes in sheds are different, some are serious and some are light, which can make cucumber plants grow unevenly.
Control measures: 1.8% of avermectin 2000-3000 times solution can be used to irrigate the roots, and each tube is filled with 200 ml of liquid medicine.
Reason 4: The size of the melon seedlings varies
When farmers grow vegetables, they will have more spare time. However, if severe disease epidemics are encountered at the seedling stage, spare cucurbits may not be sufficient, but if they can not be planted, they may borrow some plants to colonize. This will cause the cucumbers to grow. Qi.
Prevention and control measures: When planting, the seedlings should be evenly distributed, and the uneven growth can be controlled by spraying the harvested No. 1 800-fold liquid to promote uniform growth.
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